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Companhia de saneamento Basico Do Estado De Sao Paulo - Sabesp

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FY2010 Annual Report · Companhia de saneamento Basico Do Estado De Sao Paulo - Sabesp
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20-F 1 sbsform20f2010.htm FORM 20F 2010 

UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 

FORM 20-F 

     REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 

1934 

OR 

     ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR 

THE FISCAL YEAR ENDED DECEMBER 31, 2010 

OR  

     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the transition period from ________________ to _______________________ 

OR  

     SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

Date of event requiring this shell company report__________________________ 

Commission file number 001----31317 

Companhia de Saneamento Básico do Estado de São Paulo - SABESP 
(Exact name of Registrant as specified in its charter) 

Basic Sanitation Company of the State of São Paulo----SABESP 
(Translation of the Registrant’s name into English) 

Federative Republic of Brazil 
(Jurisdiction of incorporation or organization) 

Rua Costa Carvalho, 300 
05429----900 São Paulo, SP, Brazil 
(Address of principal executive offices) 

Rui de Britto Álvares Affonso  
raffonso@sabesp.com.br 
 (+55 11 3388 8247) 
 Rua Costa Carvalho, 300 05429-900 São Paulo, SP, Brazil 

Securities registered or to be registered pursuant to Section 12(b) of the Act: 

Title of each class 
Common Shares, without par value 
American Depositary Shares, evidenced by American Depositary Receipts, 
each representing 2 Common Shares(1) 

Name of each exchange on which registered 
New York Stock Exchange* 
New York Stock Exchange  

___________________ 

* Not for trading purposes, but only in connection with the registration of American Depositary Shares pursuant to the requirements of the Securities and 
Exchange Commission. 
(1) Until June 8, 2007, each American Depositary Share, evidenced by American Depositary Receipts, represented 250 Common Shares. 

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Securities registered or to be registered pursuant to Section 12(g) of the Act: None  

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None 

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered 
by the annual report. 

227,836,623 Shares of Common Stock

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. 

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 
15(d) of the Securities Exchange Act of 1934. 

Yes  

    No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange 
Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has 
been subject to such filing requirements for the past 90 days. 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive 
Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 
months (or for such shorter period that the registrant was required to submit and post such files). 

Yes  

    No 

Yes  

     No 

Yes  

    No 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of 
“accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one): 

Large accelerated filer  

    Accelerated filer  

    Non-accelerated filer 

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing: 

U.S. GAAP  

    International Financial Reporting Standards as issued by the International Accounting Standards Board  

    Other 

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has 
elected to follow 

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). 

Item 17  

    Item 18 

2 

Yes  

    No 

  
 
 
 
 
Table of Contents

IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS

PART I
ITEM 1.
ITEM 2. OFFER STATISTICS AND EXPECTED TIMETABLE
ITEM 3. KEY INFORMATION
ITEM 4.
INFORMATION ON THE COMPANY
ITEM 4A. UNRESOLVED STAFF COMMENTS
ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECTS
ITEM 6. DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES
ITEM 7. MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS
ITEM 8. FINANCIAL INFORMATION
ITEM 9. THE OFFER AND LISTING
ITEM 10. ADDITIONAL INFORMATION
 ITEM 11. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
ITEM 12. DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES
PART II
ITEM 13. DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES

MATERIAL MODIFICATIONS TO THE RIGHTS OF SECURITY HOLDERS AND USE OF 
PROCEEDS

 ITEM 14.
ITEM 15. CONTROLS AND PROCEDURES
ITEM 16 [RESERVED]
PART III
ITEM 17. FINANCIAL STATEMENTS
ITEM 18. FINANCIAL STATEMENTS
ITEM 19. EXHIBITS

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Table of Contents

General 

PRESENTATION OF FINANCIAL AND OTHER INFORMATION 

We maintain our books and records in reais.  We prepared our consolidated financial statements as of and for the years ended 

December 31, 2008, 2009 and 2010 included in this annual report in accordance with International Financial Reporting Standards, or IFRS, 
as issued by the International Accounting Standards Board, or IASB. 

Convenience Translations 

We have translated some of the real  amounts contained in this annual report into U.S. dollars.  The rate used to translate such amounts 

in respect of the year ended December 31, 2010 was R$1.666 to US$1.00, which was the commercial rate for the purchase of U.S. dollars 
in effect on December 31, 2010, as reported by the Central Bank.  The U.S. dollar equivalent information presented in this annual report is 
provided solely for the convenience of reader and should not be construed as implying that the real  amounts represent, or could have been 
or could be converted into, U.S. dollars at the above rate.  See “Item 3.A.  Selected Financial Data—Exchange Rates” for more detailed 
information regarding the Brazilian foreign exchange system and historical data on the exchange rate of the real  against the U.S. dollars. 

Rounding 

Some percentages and numbers included in this annual report have been subject to rounding adjustments.  Accordingly, figures shown 

as totals in certain tables may not be an arithmetic aggregation of the figures that precede them. 

Other Information 

In this annual report, unless the context otherwise requires, references to “we,” “us,” “our,” “Company,” or “SABESP” refer to 

Companhia de Saneamento Básico do Estado de São Paulo - SABESP.   

In addition, references to: 

•   “real,” “reais” or “R$” are to the Brazilian real, the official currency of Brazil; 

•   “U.S. dollars” or “US$” are to the United States dollar, the official currency of the United States; 

•   “Brazil” are to the Federative Republic of Brazil; 

•   “State” are to the State of São Paulo, which is also our controlling shareholder;  

•   “federal government” and “Brazilian government” are to the federal government of the Federative Republic of Brazil and “state 

government” are to the state government of the State of São Paulo; 

•   “São Paulo metropolitan region” are to the area where the Metropolitan executive office operates, comprising 38 municipalities, 

including the city of São Paulo; 

•   “Regional systems” are to the area where the Regional systems executive office operates, comprising 326 municipalities in the 

interior and coastline regions of the State of São Paulo; 

•   “water coverage ratio” are to the ratio between the number of residences connected to the water supply network, divided by the 

number of urban residences in a certain area; and 

•   “sewage coverage ratio” are to the ratio between the number of residences connected to the sewage collection network, divided 

by the number of urban residences in a certain area. 

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Table of Contents

Information in this annual report related to liters, water and sewage volumes, number of employees, kilometers, water and sewage 

connections, population served, operating productivity, water production rate, sewage lines (in kilometers), savings achieved and 
investment in improvement programs has not been audited. 

Market Information 

We make statements in this annual report about our market share and other information relating to Brazil and the industry in which we 

operate.  We have made these statements on the basis of information from third-party sources and publicly available information that we 
believe is reliable, such as information and reports from the Brazilian Institute of Geography and Statistics (Instituto Brasileiro de 
Geografia e Estatística), or IBGE, and the State Data Analysis System Foundation (Fundação Sistema Estadual de Análise de Dados) or 
SEADE, among others.  We have no reason to believe any of this information is inaccurate in any material respect. 

References to urban and total population in this annual report are estimated based on a research made by the SEADE:  “Projections for 

the State of São Paulo – Population and Residences until 2025” (Projeções para o Estado de São Paulo – População e Domicílios até 
2025).   

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Table of Contents

CAUTIONARY STATEMENTS ABOUT FORWARD----LOOKING STATEMENTS 

This annual report includes forward-looking statements, mainly in Items 3 through 5.  We have based these forward-looking 
statements largely on our current expectations and projections about future events and financial trends affecting our business.  These 
forward-looking statements are subject to risks, uncertainties and assumptions, including, among other factors: 

•               general economic, political, demographical and other conditions in Brazil and in other emerging market countries; 

•               changes in applicable laws and regulations, as well as the enactment of new laws and regulations, including those relating to 

environmental, tax and employment matters in Brazil; 

•               fluctuations in inflation, interest rates and exchange rates in Brazil; 

•               the interests of our controlling shareholder; 

•               our ability to collect amounts owed to us by our controlling shareholder and by municipalities; 

•               our ability to continue to use certain reservoirs under current terms and conditions; 

•               our capital expenditure program and other liquidity and capital resources requirements; 

•               droughts, water shortages, intensive rains and other climate events; 

•               power shortages or rationing in energy supply or significant changes in energy tariffs; 

•               the effects of the agreement for provision of water and sewage services in the city of São Paulo, that we executed with the State 

and the city of São Paulo; 

•               our lack of formal agreements with certain municipalities to which we render our water and sewage services to, including the 

cities comprising metropolitan regions except for the municipality of São Paulo; 

•               the right municipalities have to terminate our existing concession agreements prior to their expiration date and our ability to 

renew such agreements; 

•               our ability to provide water and sewage services in additional municipalities and to maintain rights to provide the currently 

contracted services; 

•               the size and growth of our customer base; 

•               our ability to comply with certain levels of services and attendance in the provision of water and sewage services established in 

our agreements with the municipalities; 

•               our level of indebtedness and limitations on our ability to incur additional indebtedness; 

•               our ability to access financing with favorable terms in the future; 

•               our costs relating to compliance with environmental laws and potential penalties for failure to comply with these laws; 

•               our exposure to probable increases in the frequency of extreme weather conditions; 

•               the outcome of our pending or future legal proceedings; 

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Table of Contents

•               our management’s expectations and estimates relating to our future financial performance; 

•               the regulation issued by the São Paulo State Sanitation and Energy Regulatory Agency, or the ARSESP, regarding several 

aspects of our business, including limitations on our ability to adjust our tariffs; and  

•               other risk factors as set forth under “Item 3.D. Risk Factors.” 

The words “believe,” “may,” “estimate,” “continue,” “anticipate,” “plan,” “intend,” “expect” and similar words are intended to 
identify forward-looking statements.  In light of these risks and uncertainties, the forward-looking events and circumstances discussed in 
this annual report might not occur.  Our actual results could differ substantially from those anticipated in our forward-looking statements.  
Forward-looking statements speak only as of the date they were made and we do not undertake the obligation to update or revise any 
forward-looking statements, whether as a result of new information, future events or otherwise, unless required by law.  Any such 
forward-looking statements are not an indication of future performance and involve risks.  

ITEM 1.        IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS 

Not applicable. 

ITEM 2.        OFFER STATISTICS AND EXPECTED TIMETABLE 

PART I 

Not applicable. 

ITEM 3.        KEY INFORMATION 
A.    Selected Financial Data 

The tables below contain a summary of our financial data as of and for each of the periods indicated.  The summary of our financial 
data was derived from our consolidated annual financial statements, prepared in accordance with IFRS, as issued by the IASB.  You should 
read  this  selected  financial  data  in  conjunction  with  our  consolidated  financial  statements  and  the  related  notes  thereto  included  in  this 
annual report.  

The  selected  consolidated  financial  information  as  of  and  for  the  years  ended  December 31,  2008,  2009  and  2010  prepared  in 
accordance with IFRS, has been derived from our audited consolidated financial statements, which appear elsewhere in this annual report.   

The following tables present our selected financial data as of and for each of the periods indicated. 

IFRS Summary Financial Data 

Statement of operations data: 
Net revenue from sales and services 
Cost of sales and services 
Gross profit 
Selling expenses 
Administrative expenses 
Operating profit 
Financial income (expenses), net 
Net income 

Earnings per share – basic and diluted 
Earnings per ADS – basic and diluted 

Year ended December 31, 
2009 
(in millions of reais, except per share and per ADS(1) data) 

2010 

2008 

7,809.3
(4,482.9)
3,326.4
(499.7)
(580.0)
2,121.2
(973.0)
862.9

3.79
7.58

8,579.5
(5,087.3)
3,492.2
(610.4)
(717.1)
2,120.3
(10.0)
1,507.7

6.62
13.24

9,231.0
(5,194.5)
4,036.5
(712.9)
(653.2)
2,672.2
(379.4)
1,630.5

7.16
14.32

Dividends and interest on shareholders’ equity per share 
Weighted average number of common shares outstanding 

1.30
227,836,623

1.73
227,836,623

2.00
227,836,623

_________________ 
(1)   American Depositary Shares, or ADS. 

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Table of Contents

2008 

As of December 31, 
2009 
(in millions of reais)  

2010 

Balance sheet data: 
Property, plant and equipment, net (*) 
Intangible assets, net (*) 
Total assets 
Short-term loans and financing 
Long-term loans and financing 
Interest on shareholders’ equity payable 
Total liabilities 
Shareholders’ equity 
Capital stock 

179.4
15,462.8
18,711.3
1,446.6
5,414.3
275.0
11,386.3
7,325.0
6,203.7

190.4
16,917.5
20,243.1
1,009.9
5,548.0
365.4
11,804.5
8.438.6
6,203.7

Other financial information: 
Cash provided by operating activities 
Cash used in investing activities 
Cash provided by (used in) financing activities 
Capital expenditures 
___________________ 
(*)   Reclassification between property, plan and equipment and intangible assets, in the amounts of R$130.1 million in 2008 and R$139.8 million in 2009.  

2,103.9
(1,640.3)
(295.2)
(1,545.9)

2,072.5
(1,964.0)
36.9
(1,982.4)

Operating Data 

2006 

As of and for the year ended December 31, 
2008 

2009 

2007 

249.6
18,546.8
23,350.6
1,242.1
7,022.5
354.3
13,668.8
9,681.8
6,203.7

2,083.0
(2,091.4)
1,226.5
(1,901.5)

2010 

Number of water connections (in thousands) 
Number of sewage connections (in thousands) 
Percentage of population with water connections (in percentages) 
Percentage of population with sewer connections (in percentages) 
Volume of water billed during period (in millions of cubic meters) 
Water loss percentage during period (average)(in percentages)(1) 
Water loss per connection (average)(2) 
Number of employees 
___________________ 
(1)   Includes both physical and non-physical losses.  Water loss percentage represents the quotient of (i) the difference between (a) the total amount of water produced by us 
less (b) the total amount of water invoiced by us to customers minus (c) the volume of water set out below that we exclude from our calculation of water losses, divided 
by (ii) the total amount of water produced.  We exclude from our calculation of water losses the following:  (i) water discharged for periodic maintenance of water mains 
and water storage tanks; (ii) water supplied for municipal uses such as firefighting; (iii) water we consume in our facilities; and (iv) estimated water losses associated 
with water we supply to favelas  (shantytowns). 

6,945
5,336
99
79
1,878
27.9
436
16,649

7,295
5,718
99
81
1,992
26.0
403
15,330

6,609
5,002
99
78
1,807
31.9
511
16,978

7,118
5,520
99
80
1,917
26.0
402
15,103

6,767
5,167
99
79
1,847
29.5
467
16,850

(2)   Measured in liters/connections per day, according to the new method of measuring our water losses, based on worldwide market practice for the sector.  See “Item 4.B. 

Business Overview—Description of Our Activities—Water Operations—Water Losses.” 

Exchange Rates 

The Brazilian foreign exchange system allows for the purchase and sale of foreign currency and the international transfer of reais by 

any person or legal entity, regardless of the amount, subject to certain regulatory procedures. 

The Brazilian currency has, during the last few decades, experienced frequent and substantial variations in relation to the U.S. dollar 

and other foreign currencies.  Between 2000 and 2002, the real depreciated significantly against the U.S. dollar, falling to R$3.533 per 
US$1.00 at the end of 2002, while between 2003 and mid-2008, the real appreciated significantly against the U.S. dollar with the exchange 
rate reaching R$1.634 in August 2008.  Primarily, as a result of the global financial crisis, the real depreciated 31.9% against the U.S. 
dollar during 2008 and closed the year at R$2.337 per US$1.00, but strenghened during 2009 and 2010.  On December 31, 2009 and 2010, 
the real/U.S. dollar exchange rate was R$1.741 and R$1.666 per US$1.00, respectively.   

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The Central Bank has intervened occasionally to instability in foreign exchange rates.  We cannot predict whether the Central Bank or 
the Brazilian government will continue to let the real float freely or will intervene in the exchange rate through a currency band system or 
otherwise.  The real may fluctuate against the U.S. dollar substantially in the future.  For further information on these risks, see “Item 3.D. 
Risk Factors—Risks Relating to Brazil—Exchange rate instability may adversely affect us and the market price of our common shares or 
ADSs.” 

The following tables set forth the selling rate, expressed in reais per U.S. dollar (R$/US$), for the periods indicated. 

Table of Contents

Year ended December 31, 
2006 
2007 
2008 
2009 
2010 

Month ended 
December 31, 2010 
January 31, 2011 
February 28, 2011 
March 31, 2011 
April 30, 2011 
May 31, 2011 
June 30, 2001 (through June 20, 2011) 
_______________ 
Source:  Central Bank 

Year end 
2.138 
1.771 
2.337 
1.741 
1.666 

Period end 
1.666 
1.673 
1.661 
1.629 
1.573 
1.580 
1.597 

R$ per US$1.00 

Average(1) 
2.177 
1.948 
1.837 
1.994 
1.759 

High 
2.371 
2.156 
2.500 
2.422 
1.881 

R$ per US$1.00 

Average(1) 
1.693 
1.675 
1.668 
1.659 
1.586 
1.614 
1.588 

High 
1.712 
1.691 
1.678 
1.676 
1.619 
1.634 
1.611 

Low 
2.059 
1.733 
1.559 
1.702 
1.655 

Low 
1.666 
1.651 
1.661 
1.629 
1.565 
1.575 
1.574 

(1)   Average of the exchange rates on the last day of each period. 

On June 20, 2011, the exchange rate published by the Central Bank was R$1.597 per US$1.00.  Exchange rate fluctuations will affect 

the U.S. dollar equivalent of the real price of our common shares on the São Paulo Stock Exchange (BM&FBOVESPA S.A. - Bolsa de 
Valores, Mercadorias e Futuros), or the BM&FBOVESPA, as well as the U.S. dollar equivalent of any distributions we make in reais with 
respect to our common shares. 
B.    Capitalization and Indebtedness 

Not applicable.  

C.    Reasons for the Offer and Use of Proceeds 

Not applicable.  

D.    Risk Factors 

Risks Relating to Brazil 

The Brazilian government has exercised, and continues to exercise, significant influence over the Brazilian economy.  This 

influence, as well as Brazilian political and economic conditions, could adversely affect us and the market price of our common shares 
and ADSs. 

The Brazilian government frequently intervenes in the Brazilian economy and occasionally makes significant changes in policy and 
regulations.  The Brazilian government’s actions to control inflation and other policies and regulations have often involved, among other 
measures, increases in interest rates, changes in tax policies, price and tariff controls, currency devaluations, capital controls and limits on 
imports.  Our business, financial condition and results of operations, as well as the market price of our common shares or ADSs may be 
adversely affected by changes in public policy at federal, state and municipal levels with respect to public tariffs and exchange controls, as 
well as other factors, such as:  

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•               the regulatory environment related to our business operations and concession agreements; 

•               interest rates; 

•               exchange rates and exchange controls and restrictions on remittances aborad; 

Table of Contents

•               currency fluctuations; 

•               inflation;  

•               liquidity of the Brazilian capital and lending markets; 

•               tax and regulatory policies and laws; 

•               economic and social instability; and 

•               other political, diplomatic, social and economic developments in or affecting Brazil. 

Uncertainty over whether the Brazilian government will implement changes in policies or regulations affecting these or other factors 
may contribute to economic uncertainty in Brazil and to heightened volatility in the Brazilian securities markets and in the securities issued 
abroad by Brazilian issuers, which could have a material adverse effect on us and on our common shares and ADSs.   

Inflation, and the Brazilian government’s measures to combat inflation, may contribute to economic uncertainty in Brazil, 

adversely affecting us and the market price of our common shares or ADSs. 

Brazil has, in the past, experienced extremely high rates of inflation.  Inflation and the Brazilian government’s measures to combat 
inflation have had significant negative effects on the Brazilian economy, contributing to economic uncertainty and heightened volatility in 
the Brazilian securities markets.  The Brazilian government’s measures to control inflation have often included maintaining a tight 
monetary policy with high interest rates, thereby restricting the availability of credit and reducing economic growth.  The Special Clearing 
and Settlement System (Sistema Especial de Liquidação e Custódia), or SELIC, the official overnight interest rate in Brazil, at the end of 
2008, 2009 and 2010 was 13.66%, 8.65% and 10.66%, respectively, in line with the target rate set by the Brazilian Committee on Monetary 
Policy (Comitê de Política Monetária), or COPOM.   

The annual rate of inflation, as measured by the General Market Price Index (Índice Geral de Preços—Mercado), or IGP-M index, fell 
from 9.95% in 2000 to 3.83% in 2006, increased to 7.75% in 2007 and further increased to 9.81% in 2008.  According to the IGP-M index, 
in 2009, there was a deflation of 1.71% and the rate of inflation for 2010 was 11.32%.  Brazilian governmental actions, including interest 
rate decreases, intervention in the foreign exchange market and actions to adjust or fix the value of the real, may trigger increases in 
inflation.  If Brazil again experiences high inflation, our costs and expenses may rise, we may be unable to increase our tariffs to counter 
the effects of inflation, and our overall financial performance may be adversely affected.  In addition, a substantial increase in inflation may 
weaken investors’ confidence in Brazil, causing a decline in the market price of our common shares or ADSs. 

Additionally, in the event of an increase in inflation, the Brazilian government may choose to raise official interest rates.  Increases in 

interest rates would not only affect our cost of funding, but could also have a material adverse effect on us and may also adversely affect 
the market price of our common shares or ADSs. 

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Exchange rate instability may adversely affect us and the market price of our common shares or ADSs. 

The Brazilian currency experienced frequent and substantial devaluations in relation to the U.S. dollar and other foreign currencies 
during the last decades.  Throughout this period, the Brazilian government has implemented various economic plans and utilized a number 
of exchange rate policies, including sudden devaluations, periodic mini-devaluations during which the frequency of adjustments ranged 
from daily to monthly, floating exchange rate systems, exchange controls and dual exchange rate markets.  From time to time, there have 
been significant fluctuations in the exchange rate between the Brazilian real  and the U.S. dollar and other currencies.  For example, the 
real  appreciated 13.8%, 9.5% and 20.7% against the U.S. dollar in 2005, 2006 and 2007, respectively.  In 2008, as a result of the 
worsening of the international economic crisis, the real depreciated by 31.9% against the U.S. dollar.  In 2009 and 2010, the real 
appreciated 25.5% and 4.3% against the U.S. dollar, closing at R$1.741 and R$1.666 per US$1.00, respectively.  There can be no 
assurance that the real  will not further depreciate against the U.S. dollar.  As of June 20, 2011, the commercial selling rate as reported by 
the Central Bank was R$1.597 per US$1.00. 

Depreciation of the real against the U.S. dollar could create inflationary pressures in Brazil and cause increases in interest rates, which 

could negatively affect the growth of the Brazilian economy as a whole and harm our financial condition and results of operations, curtail 
access to financial markets and prompt government intervention, including recessionary governmental policies.  Depreciation of the real 
against the U.S. dollar can also, as in the context of the current global economic recovery, lead to decreased consumer spending, 
deflationary pressures and reduced growth of the economy as whole. 

In the event of a significant devaluation of the real  in relation to the U.S. dollar or other currencies, our ability to meet our foreign 

currency denominated obligations could be adversely affected, particularly because our tariff revenue and other sources of income are 
denominated solely in reais.  In addition, because we have foreign currency denominated indebtedness, any significant devaluation of the 
real  will increase our financial expenses as a result of foreign exchange losses that we must record.  We had total foreign currency-
denominated indebtedness of R$2,248.9 million as of December 31, 2010, and we anticipate that we may incur substantial amounts of 
foreign currency-denominated indebtedness in the future.  In 2010, our results of operations were positively affected by the 4.3% 
appreciation of the real  against the U.S. dollar, which amounted to R$66.1 million.  We do not currently have any hedging instruments in 
place to protect us against a devaluation of the real in relation to any foreign currency.  A devaluation of the real  may adversely affect us 
and the market price of our common shares or ADSs.  

Developments and the perception of risk in other countries, especially in the United States and in emerging market countries, may 

adversely affect the market price of Brazilian securities, including our common shares and ADSs. 

The market price of securities of Brazilian companies is affected to varying degrees by economic and market conditions in other 
countries, including the United States and other Latin American and emerging market countries.  Although economic conditions in these 
countries may differ significantly from economic conditions in Brazil, investors’ reactions to developments in these other countries may 
have an adverse effect on the market price of securities of Brazilian issuers.  Crisis in other emerging market countries or economic 
policies of other countries may diminish investor interest in securities of Brazilian issuers, including ours.  This could adversely affect the 
market price of our common shares or ADSs, and could also make it more difficult for us to access the capital markets and finance our 
operations in the future, on acceptable terms or at all. 

The global financial crisis has had significant consequences, including in Brazil, such as stock and credit market volatility, 

unavailability of credit, higher interest rates, a general slowdown of the world economy, volatile exchange rates, and inflationary pressure, 
among others, which have and may continue to, directly or indirectly, materially and adversely affect us and the price of securities issued 
by Brazilian companies, including our common shares and ADSs.  

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Risks Relating to Our Control by the State of São Paulo  

We are controlled by the State of São Paulo, whose interests may differ from ours or from minority shareholders’ interests, and 

which could have a material adverse effect on us. 

The State of São Paulo, through its ownership of our common shares, has the ability to determine our operating policies and strategy, 
to control the election of a majority of the members of our board of directors and to appoint our senior management. As of June 20, 2011, 
the State owned 50.3% of our outstanding common shares. 

The State has directed from time to time in the past, and may direct in the future, through its control of our board of directors and 
through the enactment of State decrees, that we engage in certain business activities and make certain expenditures that promote political, 
economic or social goals but that do not necessarily also enhance our business and results of operations.  See “Item 5.A. Operating and 
Financial Review and Prospects—Factors Affecting Our Results of Operations.” 

Newly elected governors of the State typically make significant changes in our board of directors and senior management and, 
historically, the chairman of our board of directors has been the Secretary of State for the State Secretariat for Sanitation and Water 
Resources (Secretaria de Saneamento e Recursos Hídricos do Estado de São Paulo).  As a result of the 2010 elections for governor, in 
2011 the new governor elected Ms. Dilma Seli Pena as our chief executive officer and in April 28, 2011 the Secretary of State for the State 
Secretariat for Sanitation and Water Resources was elected as the new chairman of our board of directors. 

We have a substantial amount of accounts receivable owed to us by the State and some State entities, and we cannot assure you as 

to when or whether the State will pay us.  

Historically, the State and some State entities have had substantial overdue accounts payable to us relating to (i) the provision of water 
and sewage services and (ii) State-mandated special retirement and pension payments that we make to some of our former employees for 
which the State is required to reimburse us.  As of December 31, 2010, the amounts owed to us by the State for the provision of water and 
sewage services totaled R$157.2 million.  With respect to payment of pensions on behalf of the State, as of December 31, 2010, we believe 
that the State owed to us R$1,230.1 million, but due to the uncertainty regarding the recovery of the amount our management decided not 
to recognize the reimbursements.  In addition, as of December 31, 2010, we had recorded a provision for actuarial liability in the amount of 
R$1,316.7 million in respect of future supplemental pension payments the State does not believe it is responsible for paying.  Amounts 
owed to us by the State for water and sewage services and reimbursements for pensions paid may increase in the future.  

We have entered into agreements with the State to settle these overdue amounts payable to us.  For a detailed discussion of these 
agreements, see “Item 7.B. Related Party Transactions,” and Note 8 to our consolidated financial statements.  Pursuant to these agreements, 
the amounts due with respect to water and sewage services could be settled with respect to amounts owed to us through December 2007 
through the application of dividends payable by us to the State.  In December 2007, the State agreed to pay us the outstanding balance in 
the amount of R$133.7 million (as of November 30, 2007), in 60 consecutive monthly installments, beginning on January 2, 2008, and the 
amount of R$236.1 million relating to part of the accounts overdue and unpaid from March 2004 through October 2007 regarding the 
provision of water supply and sewage collection services.  We agreed to pay the State the outstanding balance of dividends, in the form of 
interest on shareholders’ equity, due from March 2004 through December 2006, in the amount of R$400.8 million, in the period from 
January through March 2008.   

In March 2008, we entered into a commitment agreement with the State for the settlement of outstanding debts related to the 

reimbursement of pension benefits.  Pursuant to the commitment agreement, the amounts due to us with respect to payments of pensions on 
behalf of the State may be partially settled through the transfer to us of certain reservoirs in the Alto Tietê System that we use and are 
owned by the State.  In November 2008, we entered into an agreement with the State relating to payments of pension benefits made by us 
on its behalf.  The State acknowledged that it owed us the outstanding balance of R$915.3 million as of September 30, 2008 relating to 
payments of pension benefits made by us on its behalf.  We provisionally accepted the reservoirs in the Alto Tietê System as partial 
payment (R$696.3 million) subject to the transfer of the property rights of these reservoirs to us.  Since November 2008, the State has been 
paying the remaining balance in the amount of R$219.0 million in 114 successive monthly installments.  We are unable to predict whether 
and when these reservoirs will be transferred to us because the Public Prosecution Office of the State of São Paulo (Ministério Público do 
Estado de São Paulo) filed a civil public action alleging that a transfer to us of ownership of the Alto Tietê System reservoirs is illegal.   

See “Item 8.A. Financial Information—Consolidated Statements and Other Financial Information—Legal Proceedings—Other Legal 

Proceedings.”  In addition to the R$915.3 million that the State acknowledges it owes us pursuant to the November 2008 agreement, we are 
negotiating with the State further amounts that the State does not recognize it owes us.  While we continue to negotiate directly with the 
State, we are not able to assure you that we will be successful in these negotiations.  Accordingly, as of December 31, 2010, we have not 
recorded R$1,230.1 million related to reimbursements for pension benefits paid on behalf of the State and have recorded R$1,316.7 million 
pension obligation.  

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We cannot assure you when or if the State will pay the total overdue amounts owed to us.  Due to the State’s history of not making 
timely payments to us in respect of services and of not reimbursing us in a timely manner for the payments of pensions on behalf of the 
State, we cannot assure you that the amount of accounts receivable owed to us by the State and some State entities will not significantly 
increase in the future. 

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We may be required to acquire reservoirs that we use and that are owned by a State-controlled company, or we may be required to 

pay substantial charges to the owner with respect to our use of these reservoirs. 

In connection with the provision of water services, we use the Billings and Guarapiranga reservoirs that are owned by a 

State-controlled company, the Water and Energy Metropolitan Company (Empresa Metropolitana de Águas e Energia S.A.), or the 
EMAE.  We are entitled to use these reservoirs based on a grant issued by the State Department of Water and Energy (Departamento de 
Águas e Energia Elétrica do Estado de São Paulo), or DAEE.  The State, through its control of our board of directors, could require us to 
acquire the Billings and Guarapiranga reservoirs.  As a result of these acquisitions, our cash position and overall financial condition could 
be adversely affected.  In addition, since we are not currently charged for the use of these reservoirs, we are uncertain as to whether we will 
continue to be able to use the reservoirs without paying charges, or what the likely fee scale would be, if imposed.  We may also be 
required to pay additional maintenance and operational costs for our use of the Billings and Guarapiranga reservoirs.  If we were required 
to pay substantial charges to the owner or additional maintenance or operational costs for our use of these reservoirs, we could be 
materially and adversely affected.   

Risks Relating to Our Business 

We cannot anticipate the effects that further developments of the Basic Sanitation Law and its interpretation will have on the basic 

sanitation industry in Brazil and on us. 

Law No. 11,445, or the Basic Sanitation Law, was enacted on January 5, 2007.  While it has been in effect for more than four years, it 
is still in its early stages of implementation in Brazil, and we continue to be unable to anticipate all of the effects that it might have on our 
operations and business.  There are still several uncertainties related to the interpretation of the Basic Sanitation Law.  On June 21, 2010, 
the federal government enacted Federal Decree No. 7,217 regulating the Basic Sanitation Law.  Among other things, Federal Decree No. 
7,217 provided that (i) public hearings regarding the bid announcements and technical and economic viability studies are requirements for 
the validity of public-public partnership contracts (contratos de programa); (ii) the rights and obligations, including penalties, of customers 
and service providers shall be ruled by the owner of the public service, not by the regulatory agency; (iii) financial feasibility may be 
demonstrated by means of the requirement for new investments, other than the proceeds arising from the rendering of services; and (iv) 
when a service is divided and rendered by different service providers, the services will be considered as interdependent and will be subject 
to an agreement that will regulate the activities of the different services providers.  We cannot currently anticipate the effects that the 
decree will have on our business and operations, if any. 

In addition, the ARSESP is the State agency responsible for regulating the basic sanitation industry, including tariff regulation.  The 
ARSESP acts as tariff regulator both in municipalities where the State provides basic sanitation services, and in those municipalities that 
have delegated their regulatory powers to the State through cooperation agreements.  The ARSESP presently regulates our tariff structure 
and adjustments pursuant to the same tariff structure and adjustment formula that we otherwise apply.  Pursuant to a cooperation agreement 
among the State and some municipalities, the ARSESP also regulates our tariffs in municipalities that selected the ARSESP to regulate our 
tariffs. 

In 2009, the ARSESP enacted certain rules establishing (i) the general conditions for the services we render, (ii) the communication 

process for any failure in our services and (iii) the penalties for deficiencies in the provision of basic sanitation services.  We are currently 
evaluating the enforceability and legality of some of these rules.  These rules are expected to be implemented during 2011 and 2012, and 
will impact mainly our commercial and operations processes and may adversely affect us.   

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Since 2008, the ARSESP has been developing new concepts in the tariff structure and adjustment formula.  In July 30, 2010, the 
ARSESP published Resolution No. 156 establishing the methodology and general criteria for the definition of our regulatory asset base, in 
order to move forward with the tariff review process and to define the initial parameters of the auditing process that the ARSESP will have 
to conduct pursuant to the terms of the Basic Sanitation Law.  The methodology has been defined and, in general terms, assets will be 
evaluated by reposition costs and weighted by the respective usage ratio.  In March 2011, the ARSESP published the tariff review schedule 
and opened a public hearing for the proposed methodology for the calculation of the weighted average cost of capital (WACC).  In May 
2011, the ARSESP released a regulatory post-tax weighted average cost of capital of 8.06%.  According to the schedule released in March 
2011, the economic regulation model will be discussed and the regulatory asset base will be defined.  In 2012, the new tariff will be applied 
after the finalization of the model, tariff structure discussions, public consultations and publication of results.  We cannot anticipate the 
additional changes that the ARSESP will implement on our tariff structure and adjustment formula nor the effects that these changes will 
have on us.  If the changes are unfavorable to us, they could materially and adversely affect us.  Moreover, although the ARSESP has 
indicated that it will implement the new methodology by 2012, we cannot assure when the new rules will be enacted. 

The terms of our new agreement to provide water and sewage services in the city of São Paulo could have a material adverse effect 

on us. 

Our provision of water and sewage services in the city of São Paulo accounted for 54.7% of our gross revenues from sales and services 

(excluding revenues relating to the construction of concession infrastructure) in the year ended December 31, 2010. 

On June 23, 2010 the State and the city of São Paulo entered into a convention (convênio) with the intermediation and consent of 
SABESP and of the ARSESP pursuant to which they agreed to jointly manage the planning of and investment in the basic sanitation 
system of the city of São Paulo, among other things.  This agreement established that the State and the city of São Paulo would enter into 
an agreement with us, granting us exclusive rights with respect to the provision of water and sewage services in the city of São Paulo.  In 
addition, the agreement established the role of the ARSESP in regulating and overseeing our activities and established a management 
committee (Comitê Gestor) that will be responsible for planning the water and sewage services and for reviewing our investment plans.  
The management committee will be composed of six members appointed for renewable two year terms. The State and the city of São Paulo 
will have the right to appoint three members each.  We are permitted to participate in the meetings of the management committee; 
however, we are not afforded any voting rights.   

Also, on June 23, 2010, we entered into a formal agreement with the State and the city of São Paulo to regulate the provision of these 

services.  This agreement requires us, among other things, (i) to invest at least 13.0% of the gross revenues from sales and services we 
obtain from the agreement, net of the contribution for social security financing (Contribuição para Financiamento da Seguridade Social), 
or COFINS, and the contribution for the program for government Employee Fund (Programa de Formação do Patrimônio do Servidor 
Público), or PASEP, in the improvement of water and sewage infrastructure in the city of São Paulo; and (ii) to contribute 7.5% of the 
gross revenues from sales and services we obtain from this agreement, net of COFINS and PASEP taxes, to the Municipal Fund for 
Environmental Sanitation and Infrastructure (Fundo Municipal de Saneamento Ambiental e Infraestrutura), or the São Paulo Municipal 
Sanitation Fund, established by Municipal Law No. 14,934/2009.  In addition, the agreement provides that the ARSESP will ensure that the 
tariffs charged (a) will adequately compensate us for the services we provide and (b) can be adjusted to restore the original balance 
between each party’s obligation and economic gain (equilíbrio econômico-financeiro).    

Because we were not previously required to make the mandatory allocations described in items (i) and (ii) above, they were not taken 

into account in calculating our existing tariff and its adjustment formula.  Despite the contractual provisions and the ARSESP’s role in 
setting and adjusting adequate tariffs, we cannot guarantee that the tariffs we will be allowed to charge for the provision of water and 
sewage services in the city of São Paulo will continue to adequately compensate us.   

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The decision of the Brazilian Supreme Court regarding whether State or municipal governments have the right to execute 

concession and program agreements could have a material adverse effect on us. 

The agreement with the State and the city of São Paulo regulates the provision of water and sewage services in the city of São Paulo.  

It remains uncertain whether state or municipal governments have the authority to plan and regulate basic sanitation services rendered to 
metropolitan regions, as well as the right to execute concession and program agreements.  This issue is under discussion before the 
Brazilian Supreme Court in a suit initiated by third parties.  If the Brazilian Supreme Court grants this authority to municipal governments, 
under certain circumstances, we may be required to cease our operations in certain areas of the São Paulo metropolitan region in the event 
that certain municipalities opt to use another water and sewage service provider.  We cannot anticipate the effects of the Brazilian Supreme 
Court decision on the provision of our services in the city of São Paulo and in these other municipalities located in the São Paulo and in 
other metropolitan regions, either of which may affect our existing agreements to provide water and sewage services in these municipalities 
in a manner we cannot anticipate and could have a material adverse effect on us.  

We have not entered into formal agreements for the provision of water and sewage services with certain of the municipalities we 
serve, including municipalities in metropolitan regions, as required by the Basic Sanitation Law, and therefore we may not be able to 
enforce our rights to continue to provide services in these municipalities.  

Under the Basic Sanitation Law, we were required to have entered into formal agreements, before December 31, 2010, with every 
municipality with which we did not have a formal agreement in place or with which our agreements had already expired, as is the case of 
certain municipalities located in the metropolitan regions where we are authorized to operate in accordance with local legislation.  If such 
contractual arrangements were not entered into by December 31, 2010, the services concessions would no longer be valid. 

As of the date of this annual report, of the 364 municipalities we provide water and sewage services to, 119 concessions had expired.  
These 119 concessions include 21 municipalities located in and outside metropolitan regions, including the municipality of Santos, located 
in the coastal region.  Until December 31, 2010, we provided our services to these 21 municipalities through informal arrangements, such 
as deeds of authorization (escritura pública de autorização) or other similar arrangements.  As mentioned above, pursuant to the Basic 
Sanitation Law, as of December 31, 2010 these informal arrangements were considered terminated.  Although the Basic Sanitation Law 
does not impose any sanctions with respect to the non formalization of these arrangements, and we continue to provide our services to 
these muncipalities, the total number of municipalities with which we have informal or expired arrangements add up to 119.  Together, 
these 119 municipalities accounted for 26.5% of our total revenues for the year ended December 31, 2010, and 31.4% of our intangible 
assets as of that same date.  We are currently negotiating with these muncipalities the renewal of the concessions through the execution of 
program agreements.   

The 119 municipalities are located in and outside the metropolitan regions.  In order to renegotiate or formalize the agreements, we 

face the following problems: (i) we are still awaiting the final decision of the Brazilian Supreme Court regarding whether the State or the 
municipalities have the right to enter into contractual arrangements for the provision of the basic sanitation services in the metropolitan 
regions (until the execution of the agreement with the city and State of São Paulo in June 2010 there was no precedent for a joint 
management contractual arrangement between the State, the municipalities and us); (ii) the execution of new agreements will depend on 
certain acts that are beyond our control, such as the compliance by the municipalities located outside the metropolitan regions with certain 
legal procedures. 

The Basic Sanitation Law did not define any penalty for the non-compliance with the December 31, 2010 deadline by the 

municipalities or for the water and sewage service companies in case the deadline is not observed.  Consequently, we cannot anticipate if 
we are going to be subject to any penalty due to the lack of a formal agreement with some municipalities or if any eventual penalty will 
have a material adverse effect on us. 

In addition, because we do not hold concessions or contractual rights to provide services in 119 of these municipalities, we may not be 

able to effectively enforce our right to continue to provide services or may face difficulties in being timely paid for the services that we 
provide.  In the future, our rights in respect of these other municipalities could be modified or adversely affected by Brazilian federal, state 
or municipal governmental actions, judicial decisions or other factors.  For further information, see “Item 4.B. Business Overview—
Government Regulation—The Basic Sanitation Law” and “Item 4.B. Business Overview—Government Regulation—Concessions—Public 
Consortia and Cooperation Agreement Law for Joint Management.”  

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We cannot assure you when or whether there will be changes to the conditions under which we currently provide water and sewage 
services to the municipalities with which we do not have formal concession agreements or are renegotiating expired agreements or whether 
we will be able to continue to provide water and sewage services in any municipalities where we are unable to renew or enter into a formal 
concession agreement. 

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We are exposed to risks associated with the provision of water and sewage services. 

Our industry is specifically affected by the following risks associated with the provision of water and sewage services: 

•               we are subject to substantial charges imposed by state and federal government agencies that manage water resources related to 
the abstraction of water from, or dumping of sewage into, water bodies, which we may not be able to pass on to our customers.  
See “Item 4.B. Business Overview—Government Regulation—Water Usage;” 

•               in some cases, we are required to continue providing services to certain municipalities to which we provide water on a 

wholesale basis that have overdue amounts owed to us and are not paying us on a regular basis and we cannot assure you of when 
or whether these municipalities will pay us in a timely manner.  See “Item 4.B. Business Overview—Billing Procedures;”  

•               the degradation of watershed areas may affect the quantity and quality of water available to meet our customers’ demand.  See 

“Item 4.A History and Development of the Company—Capital Expenditure Program;”  

•               our tariffs may not increase in line with increases in inflation and operating expenses, including taxes, or increase in a timely 
manner, which may hinder us from passing on to our customers increases in our cost structure.  See “—The terms of our new 
agreement to provide water and sewage services in the city of São Paulo could have a material adverse effect on us”.  These 
constraints may also have an adverse effect on our ability to fund our capital expenditure program and financing activities, and to 
meet our debt service requirements.  See “Item 5.A. Operating and Financial Review and Prospects—Factors Affecting Our 
Results of Operations—Effects of Tariff Increases;”  

•               we are exposed to probable increases in the frequency of extreme weather conditions in the future, which may adversely affect 
both the quality and quantity of waters available for abstraction, treatment, and supply.  Given that our financial performance is 
closely linked to climate patterns, droughts could adversely affect the water supply systems, resulting in a decrease in the volume 
of water distributed and billed as well as in the revenue derived from water supply distribution services.  An increase in heavy 
rainfalls could impact water quality and regular operations of water sources, including abstraction of waters from our dams, due to 
increased soil erotion, silting, pollution and eutrophication of aquatic exosystems. See “Item 5.A. Operating and Financial Review 
and Prospects—Factors Affecting Our Results of Operations—Effects of Climate Change (Drought and Intense Rainfalls);” and  

•               we are dependent upon energy to conduct our operations and eventual shortages or rationing of energy may prevent us from 
providing water and sewage services and may also cause material damage to our water and sewage systems when we resume 
operations.  Also, we may not be able to pass on to our customers significant increases in energy tariffs.  See “Item 4.A. History 
and Development of the Company—Energy Consumption.” 

The occurrence of any of the above may have a material adverse effect on us. 

We may face difficulties in continuing to provide water and sewage services in the municipalities we serve and we cannot assure 

you that these municipalities will continue to require our provision of services under the same terms. 

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As of December 31, 2010, we were a provider of water and sewage services to 364 municipalities.  Between January 1, 2007 and 
December 31, 2010, we had entered into 30-year agreements with 200 of these municipalities (including our services agreement with the 
city of São Paulo), of which 26 were entered into in 2010.  These 200 municipalities accounted for 61.5% of our total revenues for the year 
ended December 31, 2010 and 59.5% of our intangible assets as of December 31, 2010.  As of December 31, 2010, we have been 
renegotiating 119 concession agreements that expired, including the one with the municipality of Santos.  Together, these 119 
municipalities accounted for 26.5% of our total revenues for the year ended December 31, 2010 and 31.4% of our intangible assets as of 
that same date. 

From January 1, 2011 to 2033, 45 concession agreements will expire.  These 45 concession agreements accounted for 9.8% of our total 

revenues for the year ended December 31, 2010 and 8.3% of our intangible assets as of that same date.   

We cannot assure you that these municipalities will continue to require our services and enter into new concession agreements or 
program agreements with us.  In the event that we are successful in renegotiating our concession agreements or entering into program 
agreements with the municipalities whose concession agreements expired or will expire, we cannot assure you that the new concession or 
program agreements will have the same terms under which we currently provide services to these municipalities.  We cannot make any 
such assumption because the Basic Sanitation Law prevents us from planning, regulating and monitoring our services and it requires more 
stringent control by the municipalities or by the ARSESP. 

In addition, these municipalities may choose to assume the direct provision of water and sewage services or promote a public bidding 
process to select another water and sewage service provider.  Depending on the eligibility requirements to participate in the public bidding 
processes, we may not qualify to participate in some or all of these public bidding processes.  If we participate in these public bidding 
processes, we cannot assure you that we will win the bid.  In the event that these municipalities assume the direct provision of water and 
sewage services or promote a public bidding process to select another water and sewage service provider, or the new terms or conditions of 
the concession or program agreements are less favorable to us, we may be materially and adversely affected.  See “Item 4.B. Business 
Overview—Our Operations” and “Item 4.B. Business Overview—Government Regulation—Concessions—Public Consortia and 
Cooperation Agreement Law for Joint Management.”  

Municipalities may, under certain circumstances, terminate our concessions before their expiration and the indemnification may 

be inadequate to recover the full value of our investments. 

The concessions we hold are subject to early termination provisions, which entitle municipalities to terminate our concessions prior to 
their expiration date under certain circumstances.  Municipalities may terminate our concessions if we fail to comply with our obligations 
under the relevant concession agreement or applicable law, or if the municipality determines, through an expropriation proceeding, that 
terminating our concession prior to its expiration date is in the public interest.  If any municipality terminates our concession before the 
expiration date, we are entitled to be indemnified for the unamortized portion of our investments, but the indemnification may not be 
sufficient for us to recover the full value of our investments.  Further, under the terms of the Constitution of the State of São Paulo, 
municipalities may pay the indemnification over a term of 25 years.  However, the Brazilian Supreme Court stayed the application of this 
provision of the Constitution of the State of São Paulo in 1997, and the decision remains valid until final judgment. 

In 1997, the municipality of Santos enacted a law expropriating our water and sewage systems in Santos.  There are pending legal 
proceedings concerning the expropriation carried out by this municipality.  We continue to provide water and sewage services to the city of 
Santos. 

In 1995, the municipality of Diadema terminated the concession agreement that had been entered into with us prior to the expiration of 

the concession agreement.  As a result, we filed a lawsuit against the municipality of Diadema which we eventually settled in 1996.  The 
municipality of Diadema did not comply with this settlement.  In December 2008, we entered into a memorandum of understanding with 
the State of São Paulo, the municipality of Diadema and the State Secretariat for Sanitation and Water Resources, formerly known as the 
State Secretariat for Sanitation and Energy (Secretaria de Saneamento e Energia do Estado de São Paulo).  This memorandum establishes 
our agreement to conclude negotiations and settle all outstanding amounts.  In addition, it indicates our intent to develop a share 
infrastructure for the provision of water and sewage services.  This memorandum of understanding stayed the collection proceedings we 
had filed against the municipality of Diadema.  We continue to supply water on a wholesale basis to the city of Diadema.   

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For further information on these lawsuits, see “Item 8.A. Financial Information—Consolidated Statements and Other Financial 

Information—Legal Proceedings.” 

We cannot assure you that other municipalities will not seek to terminate their concession agreements before the contractual expiration 

date.  The early termination of concession agreements by municipalities, our inability to receive adequate indemnification for the 
investments we made, or the payment of indemnification due to us over a long period, may have a material adverse effect on us. 

The Basic Sanitation Law has established provisions governing the indemnification of water and sewage service providers in case of 
early termination of concession agreements by a municipality and reduced the term over which indemnification must be paid to four years.  
These provisions are also applicable to concession agreements entered into prior to the enactment of the Basic Sanitation Law, as long as 
these concession agreements do not have a contractual indemnification provision in case of early termination or we have not otherwise 
entered into an agreement with the municipality with regard to such early termination.  Nevertheless, we cannot anticipate the effects of the 
Basic Sanitation Law on the amount of, and enforceability of the right to, indemnification and how Brazilian courts will enforce the 
provisions of the Basic Sanitation Law. 

Any failure to obtain new financing may adversely affect our ability to continue our capital expenditure program. 

Our capital expenditure program will require substantial liquidity and capital resources of approximately R$8.6 billion in the period 
from 2009 through 2013.  We recorded R$2.2 billion of capital expenditure in 2010 in connection with our capital expenditure program. 

We have funded in the past, and we plan to continue to fund these expenditures with funds generated by operations and domestic and 
foreign currency borrowings on acceptable terms.  A significant portion of our financing needs have been funded by lenders controlled by 
the federal government.  We also benefit from long-term financing from domestic and international multilateral agencies and development 
banks at attractive interest rates.  Changes in the policies of the federal government regarding the financing of water and sewage services, 
or our failure to continue to benefit from long-term financing from domestic and international multilateral agencies and development 
banks at attractive interest rates may impair our ability to meet our obligations or finance our capital expenditure program, which could 
have a material adverse effect on us. 

As a general rule, financial institutions and other institutions authorized to provide credit by the Central Bank may only provide loans 

to public sector entities, such as us, up to a certain percentage of the entity’s shareholders’ equity.  Because of these limitations on our 
ability to obtain credit from domestic financial institutions, our options for raising funds, other than the cash generated by our operations, 
consist mainly of borrowing from governmental agencies, national and international financial institutions or multilateral agencies and 
issuing debt securities in both the domestic and international capital markets.  These legal limitations could adversely affect our ability to 
continue our capital expenditure program. 

We are also subject to financial covenants limiting our ability to incur additional indebtedness, which could have a material adverse 
effect on us.  For further information on these covenants, see “Item 5.B. Liquidity and Capital Resources—Capital Sources—Indebtedness 
Financing—Financial Covenants.”  Our failure to comply with these covenants could impair our ability to finance our capital expenditure 
program, which could have a material adverse effect on us.  

We are subject to cost increases to comply with environmental law requirements and potential environmental liability that could 

have a material adverse effect on us. 

Our facilities are subject to extensive Brazilian federal, state and municipal laws and regulations and environmental covenants relating 
to the protection of human health and the environment.  These laws and regulations limit or prohibit emissions or spills of effluents, such as 
raw sewage, produced in connection with our operations.  We could be subject to civil public actions and criminal, administrative and other 
civil proceedings for non-compliance with environmental laws and regulations, which could expose us to administrative and civil penalties 
and criminal sanctions, such as fines, closure orders and significant indemnification obligations.  Since environmental laws and their 
enforcement by Brazilian authorities are becoming more stringent, our capital expenditures and expenses for environmental compliance 
may increase substantially.  Expenditures required for compliance with environmental laws and regulations may result in reductions in 
other strategic investments that we have planned, which could negatively affect us.  In addition, due to more stringent enforcement of 
environmental laws by Brazilian courts, we may be required to pay substantial fines and indemnifications in amounts that may vary widely 
from those currently anticipated.  We are presently a party to a number of civil public actions related to environmental matters, with regard 
to which we are unable to calculate our estimated amount of potential liability.  Any unfavorable judgment in relation to these proceedings 
or any material unforeseen environmental liabilities may have a material adverse effect on us.  For further information on these lawsuits, 
see “Item 8.A. Financial Information—Consolidated Statements and Other Financial Information—Legal Proceedings.”  

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The enactment of new laws and regulations relating to climate change and changes in existing regulation, as well as the physical 
effects of climate change, may result in increased liabilities and increased capital expenditures, which could have a material adverse 
effect on us. 

As new laws and regulations relating to climate change, including carbon controls, become applicable to us, and as existing 

environmental regulations relating to climate change become more stringent, it is possible that our capital expenditure for compliance with 
these laws and regulations will increase substantially in the future.  If we increase capital expenditure to comply with these laws and 
regulations, we may be required to reduce expenditure on other strategic investments. 

In addition, if climate change leads to significant physical effects, such as variations in the intensity of droughts and rain, our services 
may be affected and we may be required, among other things, to:  (i) make significant investments in seeking new hydric sources located 
further from major consumer centers and (ii) make significant investments in new technologies. 

We do not adopt any method for calculating the investments that would be necessary in the event of a significant physical effect from 
climate change.  Any substantial increase in expenditure related to climate change, whether for compliance with environmental regulations 
or for preventing or remedying the physical effects of climate change, may have a material adverse effect on us.  See “Item 4.B. Business 
Overview—Environmental Matters—Climate Change Regulations:  Reduction of Greenhouse Gases (GHG).” 

Any substantial monetary judgment against us in legal proceedings may have a material adverse effect on us.  

We are a party to a number of legal proceedings involving significant monetary claims.  These legal proceedings include, among 
others, civil, environmental, tax, labor, condemnation and other proceedings.  As of December 31, 2010, the total value of all outstanding 
claims was R$23,960.1 million (net of court deposits).  A substantial monetary judgment against us in one or more of these legal 
proceedings may have a material adverse effect on us.  Based on advice from our legal counsel, we have provisioned a total aggregate 
amount of R$1,459.8 million (net of court deposits) as of December 31, 2010 to cover probable losses related to legal proceedings.  This 
provision does not cover all legal proceedings involving monetary claims filed against us and it may be insufficient to cover our liabilities 
related to these claims.   

Any unfavorable judgment in relation to these proceedings may have a material adverse effect on us.  For more information, see 

“Item 8.A. Financial Information—Consolidated Statements and Other Financial Information—Legal Proceedings.” 

Risks Relating to Our Common Shares and ADSs 

The relative volatility and illiquidity of the Brazilian securities markets may substantially limit your ability to sell our common shares 
underlying the ADSs at the price and time you desire. 

Investing in securities that trade in emerging markets, such as Brazil, often involves greater risk than investing in securities of issuers 

in major securities markets, and these investments are often considered to be more speculative in nature.  The Brazilian securities market is 
substantially smaller, less liquid, more concentrated and can be more volatile than major securities markets.  Accordingly, although you are 
entitled to withdraw the common shares underlying the ADSs from the depositary at any time, your ability to sell the common shares 
underlying the ADSs at a price and time at which you wish to do so may be substantially limited.  There is also significantly greater 
concentration in the Brazilian securities market than in major securities markets.  The ten largest companies in terms of market 
capitalization represented approximately 48.8% of the aggregate market capitalization of the BM&FBOVESPA as of December 31, 2010.  
The top ten stocks in terms of trading volume accounted for approximately 53.1%, 50.4% and 48.8% of all shares traded on the 
BM&FBOVESPA in 2008, 2009 and 2010, respectively.  

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Investors who exchange ADSs for common shares may lose their ability to remit foreign currency abroad and to obtain Brazilian 

tax advantages. 

The Brazilian custodian for the common shares underlying our ADSs must obtain a certificate of registration from the Central Bank to 

be entitled to remit U.S. dollars abroad for payments of dividends and other distributions relating to our common shares or upon the 
disposition of our common shares.  If an ADR holder decides to exchange ADSs for the underlying common shares, this holder will be 
entitled to continue to rely on the custodian’s certificate of registration for five business days from the date of exchange.  After that period, 
the holder may not be able to obtain and remit U.S. dollars abroad upon the disposition of our common shares, or distributions relating to 
our common shares, unless he or she obtains his or her own certificate of registration or register under Resolution No. 2,689, dated 
January 26, 2000, of the Brazilian National Monetary Council (Conselho Monetário Nacional), or the CMN, which entitles registered 
foreign investors to buy and sell on the Brazilian stock exchanges.  If the holder does not obtain a certificate of registration or register 
under Resolution No. 2,689, this holder will generally be subject to less favorable tax treatment on gains with respect to our common 
shares. 

If a holder attempts to obtain his or her own certificate of registration, the holder may incur expenses or suffer delays in the application 

process, which could delay his or her ability to receive dividends or distributions relating to our common shares or the return of his or her 
capital in a timely manner.  We cannot assure you that the custodian’s certificate of registration or any foreign capital registration obtained 
by a holder may not be affected by future legislative changes, or that additional restrictions applicable to the holder, the disposition of the 
underlying common shares or the repatriation of the proceeds from disposition will not be imposed in the future. 

A holder of common shares or ADSs may face difficulties in protecting his or her interests as a shareholder because we are a 

Brazilian mixed capital company. 

We are a mixed capital company (sociedade de economia mista) organized under the laws of Brazil, and all of our directors and 
officers and our controlling shareholder reside in Brazil.  All of our intangible assets and those of these other persons are located in Brazil.  
As a result, it may not be possible for a holder to effect service of process upon us or these other persons within the United States or other 
jurisdictions outside Brazil or to enforce against us or these other persons judgments obtained in the United States or other jurisdictions 
outside Brazil.  Because judgments of U.S. courts for civil liabilities based upon the U.S. federal securities laws may only be enforced in 
Brazil if certain requirements are met, a holder may face difficulties in protecting his or her interests in the case of actions by our directors, 
officers or our controlling shareholder than would shareholders of a corporation incorporated in a state or other jurisdiction of the United 
States.  In addition, under Brazilian law, none of our assets which are essential to our ability to render public services are subject to seizure 
or attachment.  Furthermore, the execution of a judgment against our controlling shareholder may be delayed as payment of the judgment 
must be made pursuant to the State’s budget in a subsequent fiscal year.  None of the public property of our controlling shareholder is 
subject to seizure or attachment, either prior to or after judgment. 

Mandatory arbitration provisions in our bylaws may limit the ability of a holder of our ADSs to enforce liability under U.S. 

securities laws. 

Under our bylaws, any disputes among us, our shareholders and our management with respect to the application of Novo Mercado 
rules, Brazilian Corporate Law and the application of the rules and regulations regarding Brazilian capital markets will be resolved by 
arbitration conducted pursuant to the BM&FBOVESPA Arbitration Rules in the Market Arbitration Chamber.  Any disputes among 
shareholders, including ADR holders, and disputes between us and our shareholders, including ADR holders, will also be submitted to 
arbitration.  As a result, a court in the United States might require that a claim brought by an ADR holder predicated upon the U.S. 
securities laws be submitted to arbitration in accordance with our bylaws.  In that event, a purchaser of ADSs would be effectively 
precluded from pursuing remedies under the U.S. securities laws in the U.S. courts.  

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A holder of our common shares and ADSs might be unable to exercise preemptive rights and tag-along rights with respect to the 

common shares. 

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U.S. holders of common shares and ADSs may not be able to exercise the preemptive rights and tag-along rights relating to common 
shares unless a registration statement under the U.S. Securities Act of 1933, as amended, or the Securities Act, is effective with respect to 
those rights or an exemption from the registration requirements of the Securities Act is available.  We are not obligated to file a registration 
statement with respect to our common shares relating to these rights, and we cannot assure you that we will file any such registration 
statement.  Unless we file a registration statement or an exemption from registration is available, an ADR holder may receive only the net 
proceeds from the sale of his or her preemptive rights and tag-along rights or, if these rights cannot be sold, they will lapse and the ADR 
holder will receive no value for them. 

A holder of our ADSs may find it more difficult than a holder of our common shares to exercise his or her voting rights at our 

shareholders’ meetings. 

Holders may exercise voting rights with respect to the common shares represented by our ADSs only in accordance with the deposit 
agreement relating to our ADSs.  There are no provisions under Brazilian law or under our bylaws that limit the exercise by ADR holders 
of their voting rights through the depositary with respect to the underlying common shares.  However, there are practical limitations upon 
the ability of ADR holders to exercise their voting rights due to the additional procedural steps involved in communicating with these 
holders.  For example, our common shareholders will receive notice of shareholders’ meetings through publication of a notice in an official 
government publication in Brazil and will be able to exercise their voting rights by either attending the meeting in person or voting by 
proxy.  ADR holders, by comparison, will not receive notice directly from us.  Instead, in accordance with the deposit agreement, we will 
provide the notice to the depositary, which will, in turn, as soon as practicable thereafter mail to ADR holders the notice of the meeting and 
a statement as to the manner in which instructions may be given by holders, but only if we request the depositary to do so.  To exercise 
their voting rights, ADR holders must then instruct the depositary as to voting the common shares represented by their ADSs.  Due to these 
procedural steps involving the depositary, the process for exercising voting rights may take longer for ADR holders than for holders of 
common shares.  ADSs for which the depositary fails to receive timely voting instructions will not be voted at any meeting. 
ITEM 4.        INFORMATION ON THE COMPANY 
A.    History and Development of the Company 

Overview 

Companhia de Saneamento Básico do Estado de São Paulo – SABESP is a mixed capital company (sociedade de economia mista) 
with limited liability.  We were incorporated on September 6, 1973 under the laws of the Federative Republic of Brazil.  We are registered 
at the Commercial Registry of the State of São Paulo (Junta Comercial do Estado de São Paulo) under registration number NIRE 
35300016831.  Our principal executive offices are located at Rua Costa Carvalho, 300, 05429-900 São Paulo, SP, Brazil.  Our telephone 
number is +(55) 11 3388-8000.  Our agent for service of process in the United States is CT Corporation System, with offices at 818 West 
Seventh Street – Team 1, Los Angeles, CA 90017.  We are allowed to operate, in a subsidiary form, in other Brazilian locations and 
abroad.  See “Item 4.B. Business Overview—Government Regulation—Concessions—Public Consortia and Cooperation Agreement Law 
for Joint Management.” 

We believe we are one of the largest water and sewage service providers in the world (based on the number of customers in 2010), 

according to the 12th edition of the Pinsent Masons Water Yearbook.  We operate water and sewage systems in the State of São Paulo in 
which the city of São Paulo, Brazil’s largest city, is located.  According to the IBGE, the State of São Paulo is Brazil’s most populous state 
and the state with the highest gross domestic product, or GDP, in Brazil.  For the year ended December 31, 2010, from our total revenues 
we had a consolidated net revenue of R$9,231.0 million and a consolidated net income of R$1,630.5 million.  Our total consolidated assets 
was R$23,350.6 million and our total shareholders’ equity was R$9,681.8 million as of December 31, 2010.  

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As  of  December  31,  2010,  we  provided  water  and  sewage  services  to  a  broad  range  of  residential,  commercial,  industrial  and 
governmental customers in 364 of the 645 municipalities in the State of São Paulo, including the city of São Paulo.  Substantially all of our 
concessions or program agreements have 30-year terms.  119 of these concessions have expired and are currently being renegotiated.  From 
January 1, 2011 through 2033, 45 concessions will expire, which we will seek to replace with program agreements.  

We also supply water on a wholesale basis to six municipalities in the São Paulo metropolitan region (with a total estimated urban 
population of approximately 3.4 million) and to the municipality of Sumaré (with a total estimated urban population of 0.2 million), in 
which we do not operate water distribution systems.  For the year ended December 31, 2010, the São Paulo metropolitan region (including 
the municipalities to which we provide water on a wholesale basis) and the Regional Systems accounted for 74.5% and 25.5% of our gross 
revenue from sales and services (excluding revenues relating to the construction of concession infrastructure), respectively. 

As of December 31, 2010, we provided water services through 7.3 million water connections to approximately 23.6 million people, 

representing approximately 59.0% of the urban population of the State of São Paulo, and effectively had a water coverage ratio of 
approximately 100% in respect of all regions.  As of that date, we provided sewage services through 5.7 million sewage connections to 
approximately 20 million people and effectively had a sewage coverage ratio of 81.0%.  As of December 31, 2010, we operated through 
65,379 kilometers of water pipes and mains and through 44,287 kilometers of sewer lines.   

We also provide water and/or sewage services to four other municipalities through special purpose companies.  In addition, we render 

consulting services related to the rational use of water and commercial and operational management in Panama and Honduras through a 
partnership with Latin Consult. 

The State, our controlling shareholder, is required by law to own at least 50% plus one of our common shares.  As of June 20, 2011, 
the State owned 50.3% of our outstanding common shares.  As a mixed capital company, we are an integral part of the State governmental 
structure.  Our strategy and major policy decisions are formulated in conjunction with the State Secretariat for Sanitation and Water 
Resources as part of the overall strategic planning for the State.  The majority of the members of our board of directors and our board of 
executive officers are nominated by the State government. 

In addition, our capital expenditure budget is subject to approval by the State legislature and is approved in conjunction with the 
budget of the State Secretariat for Sanitation and Water Resources as a whole.  Our consolidated financial statements and accounting 
records are subject to review by the State Accounts Tribunal (Tribunal de Contas), as are all accounts of the State. 

Our Strengths 

We believe that our strong business position and future prospects relate to the following strengths: 

Well-established business with significant size, scale and know-how to operate in complex urban settings.  We believe we are one of 

the largest water and sewage service providers in the world.  We provide water services directly to approximately 23.6 million people and 
supply water on a wholesale basis to an additional urban population of 3.6 million people, including the municipality of Sumaré.  As of 
December 31, 2010, we effectively had a water coverage ratio of approximately 100% in respect of all regions in which we operate.  We 
also provide sewage services directly to approximately 20 million people, achieving a sewage coverage ratio of 81.0% in respect of all 
regions in which we operate as of December 31, 2010.  During the year ended December 31, 2010, our net revenue from sales and services 
increased by 7.6% as compared to the year ended December 31, 2009 (taking into account revenues relating to the construction of 
concession infrastructure).  Our significant size and scale have required us to operate in complex urban settings such as favelas  
(shantytowns) and environments without urban planning, which has enabled us to develop skills to operate in adverse conditions and have 
well-trained personnel and a specialized structure that we believe our competitors lack. 

Operations in Brazil’s most populous and wealthy state.  The State of São Paulo, part of the most developed and economically active 

region of Brazil, is the most populous state in Brazil, with an estimated population of 43.0 million as of December 31, 2010.  The city of 
São Paulo had an estimated population of 11.0 million as of that date, with 20.4 million inhabitants in the São Paulo metropolitan region.  
Based on its GDP, the State of São Paulo is the wealthiest state and largest economy in Brazil.  The GDP of the State of São Paulo was 
approximately R$1.0 trillion in 2008, representing approximately 33% of Brazil’s total GDP.  The State of São Paulo generates more 
revenue from water and sewage services than any other Brazilian state.  

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High quality operations.  We believe that we adhere to high standards of service and utilize the best available technology in the 

sanitation business to control the quality of the water captured, produced and distributed.  All of our water quality control laboratories 
operate in accordance with the ABNT NBR ISO 9001, which follows the highest international water quality standards.  In addition to our 
central laboratory, 12 of our regional laboratories are accredited by the National Institute of Metrology, Standardization and Industrial 
Quality, or INMETRO, thereby assuring the quality and accuracy of our test results, according to ABNT NBR ISO IEC 17025.  Moreover, 
our laboratories and field teams use the latest equipment to detect substances controlled by regulations and have highly trained teams to 
handle contingencies and customer complaints.  We believe our technology enhances the efficiency and quality of our operations.  As of 
December 30, 2010, 50 of our sewage treatment facilities had obtained the ISO 14001 certification. 

Access to low-cost and diverse sources of financing.  Our strong cash flow generation from operations and our role as an essential 

public service provider places us in a privileged position in our industry to obtain low cost, long-term financing from Brazilian public 
banks, and domestic and international multilateral agencies and development banks.  In addition, we are not dependent upon a limited 
number of sources of financing.  We benefit from various funding alternatives available in the Brazilian and international markets for our 
working capital needs and our capital expenditure programs.   

Strong corporate governance practices.  In 2002, we joined the Novo Mercado segment of the BM&FBOVESPA, which is the listing 

segment in Brazil with the highest corporate governance requirements.  As a result, we are committed to maintaining certain additional 
corporate governance practices that are not required by Brazilian law, ensuring additional protection to our shareholders rights and 
enhancing the quality of information we disclose to the market.  On December 1, 2007, we became part of the BM&FBOVESPA Corporate 
Sustainability Index, or the ISE, which reflects our high degree of commitment to sustainable environmental and social practices.   

Our Strategy 

Our mission is to provide water and sewage services, contributing to the improvement of the quality of life and of the environment.  To 
this end, our strategic objectives are based upon the guiding principles of growth, quality, universalization of sanitation services and social, 
economic and environmental sustainability.  We also base our strategic objectives on our political and institutional relationships as well as 
on our commitment to the market to increase shareholder value.  We seek to implement these guiding principles through the following 
strategies: 

Reduce operating costs and increase productivity and profitability.  We intend to use our best efforts to reduce operating costs and 
increase productivity and profitability.  To achieve this goal, we plan to improve the management of our assets, as well as to continue to 
reduce our total salary and payroll expenses by decreasing the number of our employees, automating some of our operations, streamlining 
operational processes, implementing integrated planning and further investing in internal technological research and development.  We also 
plan to continue our efforts to improve our collection of overdue accounts receivable from municipalities to which we provide services, 
from the State and from other governmental entities, including by exploring opportunities to offset these outstanding debts against certain 
possessory or property rights over utilities relating to water and sewage systems. 

Continue to prudently manage our levels of indebtedness.  We intend to continue to fund our working capital needs and estimated 
capital expenditure programs with diversified sources of financing, such as domestic and international development banks and multilateral 
agencies.  We will continue to seek market opportunities for low-cost financing and restructuring of our indebtedness if and when 
advantageous and appropriate.  Our total financial indebtedness increased by 26.0%, from R$6,558.0 million as of December 31, 2009 to 
R$8,264.6 million as of December 31, 2010.  In addition, during the same period, our total foreign denominated indebtedness recorded 
increased 28.8%, from R$1,745.6 million as of December 31, 2009, to R$2,248.9 million as of December 31, 2010, as a result of the 
issuance of eurobonds and local debentures in 2010 to meet our financial obligations in 2010 and 2011 and, mainly, by investments from 
the Japan Bank for International Cooperation, or the JBIC, and the Brazilian Development Bank (Banco Nacional de Desenvolvimento 
Econômico e Social), or BNDES, and Carteira de Saneamento/CEF-FGTS.  We also made significant amortization payments relating to 
certain Brazilian and foreign currency-denominated indebtedness.  

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Improve operating efficiency and reduce water losses.  We seek to reduce both physical water losses, which result mainly from 
leakage, and non-physical water losses, which result primarily from the inaccuracy of our water meters installed at our customers’ premises 
and at our water treatment facilities, and from clandestine and illegal use.  In order to achieve more consistent long-term results, we have 
developed a comprehensive 11-year program to reduce our water loss rate.  The first three years of the program from 2009 to 2011 is being 
funded by the BNDES.  During 2012 and 2013 the program will be funded by a loan granted by the government of Japan through the Japan 
International Cooperation Agency, or JICA.  The program’s focus is on the renewal of our water distribution infrastructure and the 
improvement of maintenance and control services as a means of reducing physical water losses.  We are also seeking to reduce physical 
water losses by creating smaller water supply districts through the construction of district meeting areas, or DMAs, that reduce the system’s 
pressure and pipe bursts, allowing leaks to be detected and repaired more efficiently.  The program also seeks to reduce non-physical water 
losses by upgrading and replacing inaccurate water meters and through inspections of non-authorized water consumption in water service 
connections. 

Ensure the quality and availability of our services in our existing service area.  Our goal is to maintain an effective water coverage 
ratio of approximately 100%, coupled with a high standard of quality and availability.  We intend to continue to effectively have a water 
coverage ratio of approximately 100% and meet the expected population growth by adding 1.3 million water connections by 2019.  We 
also intend to increase our sewage coverage ratio to 90.0% by 2019 by adding 1.7 million sewage connections.  To ensure the quality and 
availability of our services, we also intend to improve customer relations by shortening response times for customer installations as well as 
through a focused public relations program to enhance our image.  In addition, we are also developing short, medium and long-term 
marketing strategies, such as client segmentation and tailor-made solutions for each type of client, which we believe will help us increase 
our customer base.  

Maintain and continue to expand our existing service areas.  We intend to maintain our operating base through the execution of new 
agreements.  To this end, we are actively seeking to develop closer relationships with the municipal governments that we currently serve in 
order to increase customer loyalty and thereby renew all or substantially all our expiring concession agreements.  In June 2010, we entered 
into an agreement with the State and city of São Paulo with a 30-year term for the provision of water and sewage services in the city of São 
Paulo, which in the year ended December 31, 2010 accounted for 54.7% of our gross revenues.  Between January 1, 2007 and 
December 31, 2010, we entered into 200 agreements with 30-year terms with municipalities (including our services agreement with the city 
of São Paulo), of which 26 were entered into in 2010.  These 26 municipalities accounted for 53.0% of our total revenues for the year 
ended December 31, 2010 and 50.0% of our intangible assets as of that same date.  As of December 31, 2010, 119 of our concessions had 
expired and are currently being renegotiated.  These 119 municipalities accounted for 26.5% of our total revenues for the year ended 
December 31, 2010 and 31.4% of our intangible assets as of that same date.  From January 1, 2011 through 2033, 45 concession 
agreements accounting for 9.8% of our revenues for the year ended December 31, 2010 and 8.3% of our intangible assets as of 
December 31, 2010 will expire.   

We have also developed a platform to offer unique services relating to sustainability, environmental preservation and water resource 

management to our large industrial, commercial and residential customers in order to encourage these customers to continue to use our 
water services.  We also intend to continue to expand our sewage services.  A significant portion of our capital expenditure program, of 
approximately R$8.6 billion between 2009 and 2013, is designed to achieve this goal.  We also regularly explore the possibility of 
executing agreements for the provision of water and sewage services in municipalities of the State of São Paulo in which we currently have 
no operations or to which we currently supply water and provide sewage treatment solely on a wholesale basis, representing a total 
population of approximately 17 million.  We evaluate possible expansion opportunities in terms of proximity to our existing service areas 
to maximize return on investment and improve our financial performance.  We also intend to study, and take advantage of, opportunities in 
other Brazilian states and in other countries to expand our services and increase our market share. 

Expand our water and sewage services.  We had a sewage coverage ratio of 81.0% as of December 31, 2010, and we plan to increase 

our sewage coverage ratio to 90.0% by 2019, by adding over 1.7 million sewage connections.  In addition, there are municipalities in the 
State of São Paulo representing an aggregate population of approximately 17 million to which we currently do not provide water or sewage 
services, or to which we currently supply water solely on a wholesale basis.  Our strong presence in the State and experience in providing 
water and sewage services places us in a privileged position to expand our sewage services to municipalities in which we provide only 
water services and our water and sewage services to municipalities in which we do not yet operate, in both the State of São Paulo and also 
in other states in Brazil and abroad.  Further, we seek to deepen our relationships with strategic clients that consume high volumes of water 
(more than 500 cubic meters per month) by applying special tariffs for these clients.  

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Seek selective opportunities to expand our business.  In 2007, a change in our bylaws expanded the scope of our corporate purpose to 

include activities complementary to our water and sewage services, such as urban rainwater management and drainage services, urban 
cleaning services and solid waste management services.  Since then we have: 

•               executed cooperation agreements to exchange technology with six regional basic sanitation companies in Brazil, with Mekorot 
National Water Company, an Israeli company, Sociedade General Aguas de Barcelona S/A – Agbar, a Spanish company, Instituto 
Costarricence de Acueductos y Alcantarillados, a Costa Rican company,  Empresa Pública de Medellin, a Colombian municipal 
multi-utilities company and Agua y Saneamientos Argentinos - AYSA, an argentinian company, which will allow us to exchange 
know-how and learn about future opportunities; 

•               executed memoranda of understanding with three municipalities to study the possibility of operating landfills; 

•               created four special purpose companies (SESAMM – Serviços de Saneamento de Mogi Mirim S/A; Águas de Castilho S.A.; 

Águas de Andradina S.A.; and Saneaqua Mairinque S.A.) to operate water and/or sewage concessions granted by four 
municipalities in the State of São Paulo; 

•               executed an agreement with the Servitec/Tecniplan consortium for the use of small hydroelectric power plants in our water 

treatment stations in Guaraú and Vertedouro Cascata; 

•               executed an agreement with the basic sanitation company of the state of Alagoas to transfer technology for the reduction of 

water losses in the city of Maceió; 

•               executed a service agreement with the basic sanitation company of the state of Espírito Santo to license the use of our 

proprietary software “Aqualog” designed to remotely monitor water treatment; 

•               won two international public biddings for the provision of:  (i) consulting services relating to a program for the rational use of 
water and for the implementation of a new model for commercial and operational management of the Instituto de Acueductos y 
Alcantarillados Nacionales, the company responsible for the provision of the water and sewage services in the central provinces of 
Panama, and (ii) consulting services for the implementation of a new model for commercial and operational management in nine 
municipalities of Honduras;  

•               created a special purpose company (Aquapolo Ambiental S.A.), in partnership with a private sanitation services operator, to 

build and operate the largest water recycling facility in the southern hemisphere, which will supply up to 1,000 litres per second to 
industries in the São Paulo metropolitan region; 

•               rendered consulting services relating to the Municipal Basic Sanitation Plan to the municipality of Barro Alto, located in the 

State of Goiás; and 

•               created a special purpose company (ATTEND), in partnership with Estre Ambiental S.A., for the implementation of a structure 
to receive non-domestic water resources in the municipality of São Paulo, which will also have a pre-treatment water station. 

In addition, in connection with the expansion of our business, we are evaluating and may consider creating an investment vehicle, 

Sabesp Participações, through which we may make equity investments in the near future. 

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We intend to continue to selectively seek new business opportunities to take advantage of our know-how, size and scale. 

We believe that our overall strategy will enable us to meet the demand for high quality water and sewage services in the State of São 

Paulo, in other Brazilian states and abroad, while strengthening our results of operations and our financial condition and creating 
shareholder value. 

State of São Paulo 

The State of São Paulo is one of 26 states that, together with the Federal District of Brasília, constitute the Federative Republic of 
Brazil.  The State of São Paulo is located in the southeastern region of the country, which also includes the States of Minas Gerais, Espírito 
Santo and Rio de Janeiro, and which is, according to IBGE, the most developed and economically active region of Brazil.  The State of São 
Paulo is located on the Atlantic coast of Brazil, with the States of Rio de Janeiro and Minas Gerais to the north, the State of Paraná to the 
south and the State of Mato Grosso do Sul to the west. 

The State of São Paulo occupies 3.0% of Brazil’s land mass and encompasses an area amounting to approximately 96,000 square 
miles.  According to the SEADE, the State of São Paulo had an estimated total population of 43.0 million as of December 31, 2010.  The 
city of São Paulo, the State of São Paulo’s capital, had an estimated population of 11.0 million, with 20.4 million inhabitants in the São 
Paulo metropolitan region, as of December 31, 2010.  The São Paulo metropolitan region encompasses 39 cities and is the largest 
metropolitan region in the Americas and the third largest metropolitan region in the world, according to the United Nations’ World 
Urbanization Prospects, 2009 Revision.  The São Paulo metropolitan region accounted for approximately 47% of the population of the 
State of São Paulo as of December 31, 2010.  

According to the IBGE, the GDP of the State of São Paulo was approximately R$1 trillion in 2008, representing approximately 33% of 
Brazil’s total GDP, and making it the largest economy of any state in Brazil based on GDP.  According to the IBGE, the State of São Paulo 
is also the leading Brazilian state in terms of manufacturing and industrial activity, with a strong position in car manufacturing, 
pharmaceuticals, computer manufacturing, steel making and plastics, among other activities, as well as a leading position in the banking 
and financial services industries.  The State of São Paulo is the most important exporting state in Brazil, according to the Brazilian Ministry 
of Development, Industry and Foreign Trade (Ministério do Desenvolvimento, Indústria e Comércio Exterior).  

History 

Until the end of the nineteenth century, water and sewage services in the State of São Paulo were generally provided by private 
companies.  In 1875, the Province of São Paulo granted a concession for the rendering of water and sewage services to Companhia 
Cantareira de Água e Esgotos.  In 1893, the government of the Province of São Paulo assumed responsibility for the rendering of water 
and sewage services from Companhia Cantareira de Água e Esgotos and formed the Office of Water and Sewers (Repartição de Água e 
Esgotos), a governmental agency.  Since that time, water and sewage services in the São Paulo metropolitan region have been administered 
by the State government.  Historically, water and sewage services in substantially all other municipalities of the State were administered by 
the municipalities directly either by municipal water and sewage departments or through autarquias  of the municipal government.  
Autarquias  are relatively autonomous public bodies with separate legal standing, assets and revenues, created by law to undertake 
administration of public services, which are considered to be better managed by a decentralized administrative and financial structure. 

In 1954, in response to dramatic population growth in the São Paulo metropolitan region, the State government created the Department 

of Water and Sewers (Departamento de Águas e Esgotos), as an autarquia  of the State.  The Department of Water and Sewers provided 
water and sewage services to various municipalities in the São Paulo metropolitan region. 

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A major restructuring of the entities providing water and sewage services in the State of São Paulo occurred in 1968, with the creation 

of the Water Company of the São Paulo Metropolitan Region (Companhia Metropolitana de Água de São Paulo), or the COMASP, the 
purpose of which was to provide potable water on a wholesale basis for public consumption in the municipalities of the São Paulo 
metropolitan region.  All assets relating to the production of potable water for the São Paulo metropolitan region previously owned by the 
Department of Water and Sewers were transferred to COMASP.  In 1970, the Superintendence of Water and Sewers of the city of São 
Paulo (Superintendência de Água e Esgoto da Capital), or the SAEC, was created by the State government to distribute water and collect 
sewage in the city of São Paulo.  All assets previously owned by the Department of Water and Sewers in connection with the water 
services were transferred to the SAEC.  Also in 1970, the State created the Basic Sanitation Company of the São Paulo Metropolitan 
Region (Companhia Metropolitana de Saneamento de São Paulo), or the SANESP, to provide sewage treatment services for the São Paulo 
metropolitan region.  All assets previously owned by the Department of Water and Sewers in connection with the sewage services were 
transferred to the SANESP.  The Department of Water and Sewers was subsequently closed. 

On June 29, 1973, COMASP, the SAEC and the SANESP merged to form our Company with the purpose of implementing the 
directives of the Brazilian government set forth in the National Water Supply and Sanitation Plan (Plano Nacional de Saneamento).  We 
were incorporated under the laws of Brazil as a limited company (sociedade anônima), for indefinite duration.  The National Water Supply 
and Sanitation Plan was a program sponsored by the Brazilian government, which financed capital investments in, and assisted in the 
development of, state-controlled water and sewage companies.  Since our formation, other State governmental and State-controlled 
companies involved in water supply and sewage collection and treatment in the State of São Paulo have been merged into us. 

Corporate Organization 

In 2005, we reorganized our corporate management structure.  As a result, we currently have six management divisions, each of which 

is supervised by one of our executive officers. 

The allocation of responsibilities among the executive officers is made by our board of directors, after an initial proposal made by the 

Chief Executive Officer, in accordance with our bylaws.  The Chief Executive Officer is responsible for coordinating all management 
divisions in accordance with the policies and directives established by our board of directors and board of executive officers, including the 
coordination, evaluation and control of all functions related to Chief Executive Officer’s office and staff, integrated planning, business 
management and organization, corporate communication, audit, ombudsman, and regulatory matters.  The Chief Executive Officer 
represents our Company before third parties and some of its representation powers can be granted to attorneys-in-fact.  The executive 
officers described below report to the Chief Executive Officer:   

•               the Corporate Management Officer, who is responsible for marketing, human resources and quality control programs, legal 

affairs, information technology, asset management, legal and procurement, and contracts; 

•               the Chief Financial Officer and Investor Relations Officer, who is responsible for financial planning, costs and tariffs, raising 
and allocating financial resources to all divisions within the Company, conducting capital markets and other indebtedness-related 
transactions and managing indebtedness levels, control department, accounting, corporate governance and investor relations; 

•               the Technology, Enterprises and Environment Officer, who is responsible for the environmental planning and management, 
technological and operating, product quality control, developments and coordination and execution of special investment 
programs, projects and new businesses; and 

•               the Chief Operating Officer of the São Paulo Metropolitan Region Division and the Chief Operating Office of the Regional 
Systems Division, who are responsible for managing the operation, maintenance, execution of planning and works for the water 
and sewage supply systems including planning and works for our services rendered on a wholesale basis, sales and call center 
services, as well as the control of economic-financial and operational performance of its division.  These Chief Operating Officers 
are also responsible for sanitation advisory services to autonomous municipalities and for the mediation and the negotiation with 
communities and local governments, aimed at aligning our interests with the interests of our clients.  

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Capital Expenditure Program 

Our capital expenditure program is designed to improve and expand our water and sewage system and to increase and protect our 
water sources in order to meet the growing demand for water and sewage services in the State of São Paulo.  Our capital expenditure 
program has four specific goals in the municipalities we serve:  (i) to continue to meet the maximum demand for treated water; (ii) to 
expand the percentage of households connected to our sewage system; (iii) to increase the treatment of sewage collected; and (iv) to 
increase operating efficiency and reduce water losses. 

From 2007 through 2010, our capital expenditure program totaled R$6.9 billion, primarily to build up our infrastructure and for our 
efforts to reduce water losses.  We have budgeted investments in the amount of R$5.3 billion from 2011 through 2013.  We invested R$1.7 
billion, R$1.8 billion and R$2.2 billion in 2008, 2009 and 2010, respectively.   

The following table sets forth our planned capital expenditures for water and sewage infrastructure for the years indicated. 

Planned Capital Expenditures 

Water 
Sewage 
Others 
Total 

2011 

664 
835 
254 
1,753 

2012 

2013 

(in millions of reais)  

653 
867 
228 
1,748 

2011-2013 

1,985 
2,529 
713 
5,227 

668 
827 
231 
1,726 

Our capital expenditure program from 2011 through 2013 will continue to focus on achieving our targets by making regular 

investments in and expanding our infrastructure as well as making investments in the reduction of water losses throughout the 364 
municipalities we served as of December 31, 2010. 

Main Projects of Our Capital Expenditure Program 

The following is a description of the main projects in our capital expenditure program. 

Metropolitan System Investment Program 

Metropolitan Water Program 

Demand for our water services has grown steadily over the years in the São Paulo metropolitan region and has exceeded at times the 
capacity of our water systems.  As a result, prior to September 1998, part of our customers in this region received water only on alternate 
days of the week.  We refer to this as “rotation.”  In order to remedy this situation, we implemented the Metropolitan Water Program 
(Programa Metropolitano de Água) to improve regular water supply to the entire São Paulo metropolitan region.  This program terminated 
in 2000 and the rotation was eliminated, but we have maintained our investment projections for the region.  During the second phase of the 
Metropolitan Water Program between 2006 and 2014, we plan to expand the infrastructure of water storage tanks by 210,000 cubic meters 
and to construct 44 water pumping stations and 240 kilometers of mains.  The investment is expected to reach R$2.7 billion and the 
construction is expected to expand the water production capacity by 13.2 cubic meters per second until 2014.  We have been working on 
this project since 2006, and we expect to complete it by 2014.  In 2008, 2009 and 2010, we invested approximately R$223 million, R$327 
million and R$346 million, respectively, in this region.  

Alto Tietê Public Private Partnership (PPP) 

In  June 2008,  we  entered  into  a  Public  Private  Partnership  (Parceria  Público-Privada),  or  PPP,  with  Cab  Spat,  a  special  purpose 
company  whose  main shareholders  are  Cab  Ambiental and  Galvão  Engenharia  S.A.   Cab Spat  will  be  responsible  for (i)  expanding the 
Taiaçupeba water treatment plant capacity from ten cubic meters per second to 15 cubic meters per second, (ii) building 17.7 kilometers of 
water connections and mains, (iii) building four water storage tanks with total capacity of 70,000 cubic meters, (iv) installing boosters, and 
(v)  building  pumping  stations.   The  total  investment  in  projects  to  be  undertaken  by  Cab  Spat  during  the  first  two  years  of  the  PPP  is 
estimated at R$320.0 million.  Cab Spat will also perform maintenance on the dams of the Alto Tietê System, in connection with which 
Cab Spat will also provide civil engineering, electromechanical and operational services, as well as sludge treatment and the corresponding 
services regarding water adduction and water supply.  The total value of the project is estimated at R$1.0 billion.  We intend to pay these 
investments over 15 years upon the completion of the contracted projects and services.  In 2010, the services related to water adduction 
were concluded, improving the level of water supply to the east and west regions of the São Paulo metropolitan region.  The capacity of the 
Taiaçupeba water treatment facilities (Estações de Tratamento de Água), or ETA, was increased by 2.0 cubic meters per second by the end 
of  2010,  and  by  February 2011  its  treatment  capacity  reached  13.8  cubic  meters  per  second,  with  an  average  production  of  12.1  cubic 
meters per second.  The services are expected to be completed in 2011.  After the completion of the services, the system’s nominal capacity 
will be of 15 cubic meters per second, directly benefiting 1.5 million people in the east region of the São Paulo metropolitan region, in 
addition to improving the reliability, flexibility and availability of the integrated water system that services the state’s metropolitan region.  
The increase in production will improve the east, north and west regions water supply levels since it will be possible to transfer water from 
the east system to other localities. 

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Tietê Project 

The Tietê river crosses the São Paulo metropolitan region and receives most of the region’s run-off and wastewater.  The 
environmental status of the river reached a critical level in 1992.  In an effort to reverse the situation, the State of São Paulo created a 
recovery program designed to reduce pollution of the Tietê river by installing sewage collection lines along the banks of the Tietê river and 
its tributaries.  These lines collect raw sewage and deliver it to our sewage treatment facilities.  We completed the first phase of the 
program between 1992 and 1998. 

In connection with the first phase of the Tietê Project (Projeto Tietê), in June 1998, we completed the construction of three additional 

sewage treatment facilities and invested a total of US$1.1 billion, of which US$450.0 million was financed by the Inter-American 
Development Bank, or IADB, approximately US$100 million by the Caixa Econômica Federal, or the Caixa, and approximately 
US$550 million by us.   

The second phase of the project was carried out from 2000 through 2008, with investments of approximately US$500 million, of 
which US$200.0 million were financed by the IADB, R$60.0 million by the BNDES, and R$180.0 million by the BNDES through another 
financial institution.  In this phase, 290,000 sewage connections and more than 1,500 kilometers of sewage collections networks, branch 
collectors and interceptors were installed and/or built.   

The main objective of this second phase was to continue expanding and optimizing the sewage systems of the São Paulo metropolitan 

region, primarily focusing on actions that allow for the delivery of a higher volume of raw sewage to the sewage treatment facilities that 
were built in the first phase of the Tietê Project.  Upon the conclusion of the second phase of the project in 2008, we were able to collect 
approximately 5,000 liters of raw sewage per second and send it for treatment in the five sewage treatment plants of our integrated system.  
As part of the second phase of the Tietê Project, we implemented a geographic information system named SIGNOS.  SIGNOS is a 
management information system which automates and integrates various business processes, including project management, maintenance, 
operations and customer service and maps out our entire municipal infrastructure in the São Paulo metropolitan region.  

The first and second phases of the Tietê Project contributed to an increase from 70.0% to 84.0% in the sewage collection rate and an 

increase from 24.0% to 70.0% in the treatment of the sewage collected in the São Paulo metropolitan region.  As a result, the sewage 
collection system benefited 15.8 million people (5.1 million more than the number of people served when the Tietê Project was initiated), 
and the sewage treatment benefited 11.1 million people (8.5 million more than the number of people served when the Tietê Project was 
initiated).  

As of December 31, 2010, we owed US$344.9 million to the IADB for the financing it provided.  For further information on the 

agreement entered into with the IADB, see “Item 5.B. Liquidity and Capital Resources—Capital Sources.”  We currently provide 
secondary treatment to approximately 68% of the sewage collected in the São Paulo metropolitan region.  The five principal sewage 
treatment facilities in the São Paulo metropolitan region have an aggregate installed capacity of 18 cubic meters of sewage per second and 
currently treat an aggregate of 15.6 cubic meters of sewage per second.  We plan to build additional collection lines to direct more raw 
sewage to our treatment facilities.  

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The third phase of the Tietê Project, designated as “the decontamination of the Tietê river,” aims at contributing to the recuperation of 
the water quality of the Tietê river basin through the expansion of the level of collection to 87.0% and treatment of sewage to 84.0% in the 
São Paulo metropolitan region.  The total estimated cost of the third phase is US$1.1 billion, of which US$600.0 million will be financed 
pursuant to the IADB Loan entered into on September 3, 2010.  The program plan of the third phase comprises mainly (i) drainage 
collection (collection networks and home connections), (ii) removal and transport of the drainage for treatment (branch collectors and 
interceptors), and (iii) the construction of sewage treatment plants, not only of the integrated drainage system of the São Paulo metropolitan 
region, but also of various isolated systems in the same region, during a six-year period from 2010 to 2016.  Approximately 40% of the 
work is already under execution and 32.0% is undergoing public bidding processes.  After the third phase of the Tietê Project, the sewage 
collection system will benefit an additional 1.5 million people and the sewage treatment will benefit an additional 3.0 million people.   

Corporate Program for Water Loss Reduction   

The objective of the Corporate Program for Water Loss Reduction (Programa Corporativo de Redução de Perdas) is to decrease water 
losses more efficiently by means of the integration and expansion of the existing initiatives in our business units.  We began structuring the 
program in the second half of 2007 and finalized it in 2008.  We anticipate investments of approximately R$4 billion throughout the 
program’s 11-year term, beginning in 2009.  The program aims to reduce the incidence of water loss from 436 liters per connection per day 
in December 2008 to 211 liters per connection per day in 2019, which is equivalent to reducing water losses from 27.8% in December 2008 
to 13.0% in 2019.  In 2010, we invested approximately R$216 million in this program.  As of December 31, 2009 and 2010, water losses 
remained at 26.0%. 

New Life Program 

The New Life Program (Programa Vida Nova) includes projects focused on the improvement and preservation of water reserves in the 
São Paulo metropolitan region and the urban development of the region, especially in the Guarapiranga and Billings mains.  The resources 
will be mostly invested in the creation of infrastructure to collect sewage in the region, and to direct it to treatment plants, while avoiding 
its pouring directly into the springs.  The program also includes protection activities of green areas and the urbanization of favelas  
(shantytowns) and is expected to directly benefit 45,000 families. 

The State government, local authorities and the federal government will invest approximately R$1.2 billion in the program.  We will 
fund this program with R$355.0 million, of which approximately 16% have already been contracted.  The State Secretariat for Sanitation 
and Water Resources coordinates the program with our involvement and that of the Urban Development Company of São Paulo 
(Companhia de Desenvolvimento Habitacional e Urbano), or the CDHU, and local governments in the region. 

Clean Stream Program  

The Clean Stream Program (Programa Córrego Limpo) is a partnership between the State, through us, and the municipality of São 

Paulo, and aims to clean and decontaminate urban streams in the city of São Paulo, by improving the sewage sanitary system, the 
elimination of sewage through streams and rainwater galleries, the cleaning of streams and stream borders, as well as the removal and 
relocation of properties located in riverbanks.  As of December 31, 2010, approximately R$136 million had been invested in this program 
and 96 urban streams had been decontaminated, benefiting approximately 1.7 million people.  

Regional Systems Investment Programs 

We currently have a number of projects in progress and planned for the Regional systems, including projects relating to abstraction of 
water and collection, removal and final disposal of sewage.  We invested R$922.0 million, R$1,091.0 million and R$943.7 million in these 
projects in 2008, 2009 and 2010, respectively, and we have budgeted for additional capital expenditures of approximately R$1.7 billion 
from 2011 through 2013. 

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Clean Wave Program 

The main goals of the Clean Wave Program (Programa Onda Limpa) are to improve and expand the sewage systems in the 
municipalities comprising the Baixada Santista metropolitan region, increasing the sewage collection rate from 54.0% to 95.0%, and 
treating 100.0% of the collected sewage and thereby improving bathing water quality at 82 beaches in the region.  The total investment 
planned is approximately R$1.5 billion through the end of 2011.  On August 6, 2004, we entered into a credit agreement with the JBIC for 
the financing of this project, which is guaranteed by the Federative Republic of Brazil, for a total amount of R$382.8 million.  On 
October 1, 2008, the JICA incorporated the loan transactions of the JBIC.  For further information on the agreement entered into with the 
JICA, see “Item 5.B. Liquidity and Capital Resources—Capital Sources.”  In order to fund the remaining R$1,117.2 million, we will seek 
further financial support from local and international banks and agencies.  The first disbursements under this program began in 
August 2005, and the construction works began in the second quarter of 2007.  As of December 31, 2010, we had invested approximately 
R$1.3 billion in this program, corresponding to 87.0% of the total works. 

Northern Coast Clean Wave Program  

The Northern Coast Clean Wave Program (Programa Onda Limpa Litoral Norte) will expand the collection and treatment of sewage 
in the Northern coast of the State of São Paulo, intending to benefit the local population of 600,000 people, as well as 1.3 million tourists 
each year during the high season.  By 2015, the program will increase the collection and treatment of sewage rate in the region from 36.0% 
to 85.0%, seeking to improve the health and well-being of the population, in addition to stimulating economic development through the 
increase in tourism in the region. 

In 2010, we concluded the sewage systems projects in the cities of Ilhabela, Ubatuba and Caraguatatuba and began working on two 

other sewage treatment plants in the city of São Sebastião and other sewage system projects in the cities of Ubatuba, Ilhabela and São 
Sebastião, which we expect to complete in 2012.  The total investment planned until 2015 will be of approximately R$500 million.  Until 
2010, R$77.0 million had already been invested in this program. 

Coastal Water Program 

The Coastal Water Program (Programa Água no Litoral) is the main combination of long-term activities to expand water production 
capacity in the entire coastal region of the State of São Paulo.  More than four million people in coastal cities in the State of São Paulo are 
expected to benefit from this program.  This program will enable us to increase the level of reliability of the systems, eliminating existing 
and potential deficiencies and irregularities in the water supply.  It is also expected to permit us to expand our services to reach universal 
coverage in the Baixada Santista metropolitan region, increase the availability of treated water to the local population and tourists and 
improve the quality of water available to the population.  We expect to invest R$1.1 billion in the program by 2013.  The Mambu/Branco 
Water Production System is part of this program.  It will increase water production to supply municipalities in the south of the Baixada 
Santista, increasing production from actual 0.6 cubic meter per second to 1.6 cubic meters per second.  As of December 31, 2010, R$278.0 
million had been invested in this program. 

B.    Business Overview 

Our Operations 

As of December 31, 2010, we provided water and sewage services to 364 municipalities in the State of São Paulo either under 
concession agreements, under another form of legal arrangement or under no formal agreement.  We also supply treated water on a 
wholesale basis to seven municipalities in the State of São Paulo, of which six are located in the São Paulo metropolitan region.  Pursuant 
to article 2 of our bylaws, our corporate purpose includes the provision of water supply and sewage services, urban rain water management 
and drainage services, urban cleaning services and solid waste management services.  In addition, our bylaws authorize us to carry out 
other related activities, including the planning, operation and maintenance of production systems, the storage, preservation and trading of 
energy, and the trading of services, products, benefits and rights that, directly or indirectly, result from our assets, projects and activities, 
and the right to operate a subsidiary anywhere in Brazil or abroad to provide the services mentioned above.  

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Because of the enactment of the Basic Sanitation Law, which regulates the basic sanitation industry in Brazil, we currently operate 
under two different contractual environments:  (i) for the concession agreements that have already expired, we are currently renegotiating 
or will negotiate a new agreement that follows the terms and conditions of the Basic Sanitation Law, or program agreements; and (ii) for 
the concession agreements that have not expired, we will continue to operate under the terms and conditions of the previous concession 
agreements, except in circumstances where the Basic Sanitation Law is applicable even when the concession agreement is still valid.  For 
further information on this topic, see “Government Regulation—Concessions—Public Consortia and Cooperation Agreement Law for Joint 
Management.” 

The Basic Sanitation Law required water and sewage service providers, such as us, to execute a formal agreement by December 31, 
2010 with every municipality to which they provide services without a valid legal and binding instrument.  If we failed to enter into such 
formal agreements by December 31, 2010, the concessions would no longer be valid.  As of December 31, 2010, 119 of our concessions 
were still in the process of regularization through the execution of formal agreements.  See “3.D. Risks Factors—Risks Relating to Our 
Business—We cannot anticipate the effects that further developments of the Basic Sanitation Law and its interpretation will have on the 
basic sanitation industry in Brazil and on us” and “3.D. Risks Factors—Risks Relating to Our Business—We have not entered into formal 
agreements for the provision of water and sewage services with certain of the municipalities we serve, including municipalities in 
metropolitan regions, as required by the Basic Sanitation Law, and therefore we may not be able to enforce our rights to continue to 
provide services in these municipalities.” 

Concessions  

Pursuant to the Brazilian Constitution, the authority to develop public water and sewage systems is shared by the states and 
municipalities, with the municipalities having primary responsibility for providing water and sewage services to their residents.  The 
Constitution of the State of São Paulo provides that the State shall assure the correct operation, necessary expansion and efficient 
administration of water and sewage services in the State of São Paulo by a company under its control. 

According to the Basic Sanitation Law, existing concessions will remain in effect until payment of indemnification is made based on 
the valuation of investments.  The Basic Sanitation Law provides that our new concession agreements be planned, supervised and regulated 
by the municipalities together with the State under a new model of associated management that will allow for better control, supervision, 
transparency and efficiency in the provision of public services. 

As of December 31, 2010, we provided water and sewage services to 364 municipalities.  Substantially all of these concessions have 

30-year terms.  Due to court orders, we temporarily suspended our services in five other municipalities (Araçoiaba da Serra, Cajobi, Iperó, 
Itapira and Tarumã), that as of December 31, 2010 accounted for less than 0.1% of our gross revenues.  In January 2011, we resumed the 
provision of our services to the municipality of Tarumã.  For more information, see “Item 8.A. Financial Information—Consolidated 
Statements and Other Financial Information—Legal Proceedings—Concession-Related Legal Proceedings.”  Between January 1, 2007 and 
December 31, 2010, we entered into contracts with 200 municipalities (including our services agreement with the city of São Paulo) in 
accordance with the Basic Sanitation Law, of which 26, were entered into in 2010.  In addition to the contracts that have 30-year terms, the 
municipalities entered into cooperation contracts with the State of São Paulo, delegating the regulation and monitoring of the provision of 
services to the ARSESP.  As of December 31, 2010, 119 of our concessions had expired and we have been in negotiation with these 
municipalities to execute program agreements to substitute the expired concessions.  From January 1, 2011 through 2033, 45 concessions 
will expire.  Despite these 119 concessions having expired in 2010, we are renegotiating them and we were continuing to provide water and 
sewage services to all 119 municipalities as of December 31, 2010.  We have entered into an agreement with the State and city of São 
Paulo for the provision of water and sewage services in the city of São Paulo for a 30-year term expiring in June 2040, which in the year 
ended December 31, 2010 accounted for 54.7% of our gross revenues from sales and services (excluding revenues relating to the 
construction of concession infrastructure).   

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In February 2006, we created a new division to manage the renewal of expiring concessions.  The main responsibility of this division, 
which reported directly to the Chief Executive Officer, was to renew and thus maintain the existing base of municipalities that we operate 
and formalize contracts under the new model of associated management.  Following the increase in the demand for regulatory work, this 
division shifted its focus to regulatory matters and its main roles currently involve centralizing communication with the regulatory 
agencies, driving business to the new regulatory regime and proposing matters in which we have an interest to the ARSESP. 

In April 2011, we created a specific area in our Financial Economic and Investor Relations Office responsible for costs and tariffs, 

given the subject’s importance to the continuation of our business.  We also created a statutory Regulatory Affairs Committee.  The 
committee is composed of our Chief Executive Officer, our Chief Financial and Investor Relations Officer, our Metropolitan Officer and 
our Regional System Officer and is responsible for defining the guidelines, strategies and regulatory recommendations for our Company 
and coordinating the work of the Regulatory Affairs Department. 

The current concessions are based on a standard form of agreement between us and the relevant municipality.  Each agreement 

received the prior approval of the legislative council of each municipality.  The assets comprising the existing municipal water and sewage 
systems are transferred from the municipality to us.  Until 1998, we acquired municipal concessions and the existing water and sewage 
assets in exchange for our common shares issued at book value.  Since 1998, we have acquired concessions and water and sewage assets by 
paying the municipality an amount equal to the present value of 30 years of estimated cash flows, assuming at least a 12.0% discount factor 
to us, from the concession being acquired.  Payments were made in cash. 

The main provisions of the existing concession agreements are as follows: 

•               we assume all responsibility for providing water and sewage services in the municipality;  

•               according to the municipal laws authorizing the concession, we could collect tariffs for our services without prior authorization 

of the municipality.  Tariff readjustments follow the guidelines established by the Basic Sanitation Law and the ARSESP;  

•               as a general rule, to date, we are exempt from municipal taxes, and no royalty is payable to the municipality with respect to the 

concession;  

•               we are granted rights of way on municipal property for the installation of water pipes and mains, and sewage lines; and  

•               upon termination of the concession, for any reason, we are required to return the assets comprising the municipality’s water 
and sewage system to the municipality and the municipality is required to pay us the non-amortized book value of the assets, 
considered intangible since January 2008, relating to the concession.  See Note 2.11 to our financial statements. 

Under the concession agreements executed prior to 1998, the reimbursement for the assets may be through payment of either: 

•               the book value of the assets; or  

•               the market value of the assets as determined by a third-party appraiser in accordance with the terms of the specific agreement. 

Since 1998, contracts that we have entered into with municipalities for the provision of sanitation services have been regulated by the 

Federal Concessions Law No. 8,987/1995.  Generally, these contracts have a 30-year term, and the total value of the concession is set by 
the discounted cash flow method.  Under this method, when the expected contractual cash flow is reached, the total value of the concession 
and assets is amortized to zero on our books and we receive no payment for the assets.  If the concession is terminated prior to the end of 
the 30-year term, thereby interrupting the normal contractual cash flow, we are paid an amount equal to the present value of the expected 
cash flow over the years remaining in the concession, adjusted for inflation. 

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Federal  Law  No.  11,107,  or  the  Federal  Public  Consortia  and  Cooperation  Agreement  Law,  established  the  legal  basis  for  the 
administration of public service contracts, giving municipalities responsible for sanitation services greater rights and obligations and setting 
out  more  clearly  the  provision  of  services  and  the  responsibilities  of  the  parties.   New  agreements  entered  into  following  the  expiry  of 
concession  agreements  under  the  previous  law  will  follow  this  new  model.   See  “—Government  Regulation—Concessions—Public 
Consortia and Cooperation Agreement Law for Joint Management.” 

Our new agreement model follows the provisions of the Basic Sanitation Law.  The main contractual provisions, among others, are 
joint execution of responsibilities related to planning, supervision and regulation of services and appointment of regulatory authority of 
services and periodic disclosure of accounts. 

Furthermore, the economic and financial formulas in new agreements must be based on the discounted cash flow methodology and on 
the revaluation of returnable assets.  Pursuant to the Basic Sanitation Law, our own preexisting assets will be returnable assets, but we will 
carry out all new investments and the municipalities will record them as assets.  The municipalities will then transfer possession of these 
assets to us for our use and management and will also record a credit in the same amount of the assets recorded in our favor.  According to 
Article 42 of the Basic Sanitation Law and the new agreement model, investments made during the contractual period are the property of 
the applicable municipality, which in turn generates receivables for us that are to be recovered through the operation of the services.  These 
receivables may also be used as guarantees in funding operations. 

Another important development was that the new agreement model includes exemptions from municipal taxes applicable on our 
operational areas and the possibility of the revaluation of our assets that existed prior to the execution of the program agreements in cases 
involving the early resumption of services by the concession authority. 

Municipalities have the inherent power under Brazilian law to terminate concessions prior to their contractual expiration dates for 
reasons of public interest.  The municipalities of Diadema and Mauá, two municipalities we previously served, terminated our concessions 
in February 1995 and December 1995, respectively.  The municipality of Diadema terminated our concession without our consent after 
asserting that we did not provide adequate water and sewage services, while the municipality of Mauá terminated our concession with our 
consent.  However, we currently serve the municipalities of Diadema and Mauá through the supply of water on a wholesale basis. 

We currently do not anticipate that other municipalities will seek to terminate concessions due to our close relationship with municipal 
governments, recent improvements in the water and sewage services we provide, and the obligation of the municipality to repay us for the 
return of the concession as described above.  However, we cannot be certain that other municipalities will not seek to terminate their 
concessions in the future.  See “Item 3.D. Risk Factors—Risks Relating to Our Business—Municipalities may, under certain 
circumstances, terminate our concessions before their expiration and the indemnification may be inadequate to recover the full value of our 
investments.” 

In addition, there is currently ongoing litigation with respect to municipalities that intend to expropriate our water and sewage systems, 

or to terminate concession agreements before paying us any indemnification.  For a detailed discussion on these proceedings, see 
“Item 8.A. Financial Information—Consolidated Statements and Other Financial Information—Legal Proceedings—Concession-Related 
Legal Proceedings.” 

Operations in the City of São Paulo and Certain Metropolitan Regions 

As of December 31, 2010, 119 concessions had expired which jointly accounted for 26.5% of our gross revenues.  We entered into 26 
agreements in the year ended December 31, 2010 (including our services agreement with the city of São Paulo), bringing the total number 
of program agreements entered into between 2007 and 2010 to 200.  These 26 new agreements accounted for 53.0% of our total revenues 
and 50.0% of our intangible assets as of December 31, 2010. 

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The Basic Sanitation Law provides that, in case of termination of the relationship with the aforementioned municipalities, the 
municipalities should pay us an indemnity, in an amount to be appraised, notwithstanding the non-existence of a concession agreement.  

On June 23, 2010, the State and the city of São Paulo entered into a convention with the intermediation and consent of our Company 
and of the ARSESP pursuant to which they agreed to jointly manage the planning of and investment in the basic sanitation system of the 
city of São Paulo, among other things.  This agreement established that the State and the city of São Paulo would enter into an agreement 
with us, granting us exclusive rights in the provision of water and sewage services in the city of São Paulo.  In addition, the agreement 
established the role of the ARSESP in regulating and overseeing our activities and established a management committee that will be 
responsible for planning the water and sewage services and for reviewing our investment plans.  The management committee will be 
composed of six members appointed for renewable two year terms.  The State and the city of São Paulo will have the right to appoint three 
members each.  We are permitted to participate in the meetings of the management committee; however, we are not afforded any voting 
rights.   

On June 23, 2010, we entered into a formal agreement with the State and the city of São Paulo to regulate the provision of water and 
sewage services in the city of São Paulo for a 30-year period, which may be extended for an additional 30-year period.  The Municipal Law 
No. 14,934/2009 authorized the city of São Paulo to enter into an agreement with us.  The agreement establishes, among other things, how 
specific amounts of gross revenues from the services we render should be allocated (after deduction of COFINS and PASEP).  Pursuant to 
the agreement, we are required to (i) invest at least 13.0% of the gross revenues from sales and services we obtain from this agreement in 
the improvement of water and sewage infrastructure in the city of São Paulo; and (ii) contribute 7.5% of the gross revenues from sales and 
services we obtain from this agreement to the São Paulo Municipal Sanitation Fund.  In addition, the agreement provides that the ARSESP 
will ensure that the tariffs charged (a) will adequately compensate us for the services we provide and (b) can be adjusted to restore the 
original balance between each party’s obligation and economic gain (equilíbrio econômico-financeiro).  Finally, the agreement envisages 
the remuneration of the net assets in operation, calculated preferably through asset valuation or by the monetarily updated book value, to be 
established by the ARSESP.  The agreement also foresees the remuneration of the investments to be made by us, such that there will be no 
residual value at the end of the contract period. 

Wholesale Operations 

Water Services on a Wholesale Basis  

We provide water services on a wholesale basis to seven municipalities (Diadema, Mauá, Santo André, São Caetano do Sul, 
Guarulhos, Mogi das Cruzes and Sumaré).  The agreements to provide water services on a wholesale basis must comply with the Basic 
Sanitation Law, which regulates the stages of the provision of each service, designating them as interdependent activities whose provision 
requires the supervision of an independent agency, a specific registration for the activities’ cost and assurance of payment among the 
several service providers in order to continue the provision of the services, in accordance with the rules to be published by the ARSESP.  
Our agreements currently comply with the provisions of the Basic Sanitation Law.  In 2010, the revenues from these services were R$184.8 
million. 

In December 2008, we, the State, the city of Diadema and the SANED executed a memorandum of understanding, in which the parties 

declared their intention to conclude negotiations to liquidate the outstanding debt with us and develop a shared structure of operations 
between us and the city of Diadema for the operation and provision of water and sewage services.  For further information on this 
outstanding debt, see Note 9 to our consolidated financial statements included elsewhere in this annual report.  The municipal law 
authorizing the city of Diadema to enter into an agreement with us was submitted to vote in April 2011 and we are still awaiting the result 
of the voting.  We expect to reach a final agreement with the city of Diadema and settle all the pending judicial claims during 2011.  

Sewage Services on a Wholesale Basis  

We provide sewage services on a wholesale basis to the municipalities of Mogi das Cruzes, Santo André, São Caetano, Mauá and 
Diadema.  The negotiation of the agreement for the provision of sewage services on a wholesale basis with the municipality of Santo André 
had the intervention of the Public Prosecution Office, and in other municipalities the negotiation of the agreements was a result of our 
efforts concerning the environment and the awareness of the municipal public authorities regarding to environmental issues.  Through these 
agreements, in 2010 we treated about 36.8 million cubic meters of sewage from these municipalities.  This is an example of our social-
environmental responsibility actions and our commitment to these actions.  In 2010, the revenues from these services were approximately 
R$21.8 million.  

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In December 2008, we entered into a five-year agreement for the collection and treatment of 20.0% of the sewage generated by the 
city of Guarulhos.  Due to the complexity of the construction works related to the provision of these services, we have not yet started to 
provide the sewage services to the city of Guarulhos. 

Description of Our Activities 

As set forth in Article 2 of our bylaws, our corporate purpose is to render basic sanitation services with the goal of providing basic 

sanitation services to the entire population in the municipalities where we conduct our activities without harming our long-term financial 
sustainability.  Our activities comprise water supply, sanitary sewage services, urban rainwater management and drainage services, urban 
cleaning services, solid waste management services and related activities, including the planning, operation, maintenance and 
commercialization of energy, and the commercialization of services, products, benefits and rights that directly or indirectly arise from our 
assets, operations and activities.  We are allowed to act in a subsidiary form in other Brazilian locations and abroad.  See “—Government 
Regulation—Concessions—Public Consortia and Cooperation Agreement Law for Joint Management.” 

We set forth below a description of our activities. 

Water Operations 

Our supply of water to our customers generally involves abstraction of water from various sources, subsequent treatment and 
distribution to our customers’ premises.  In 2010, we produced approximately 2,952 million cubic meters of water.  The São Paulo 
metropolitan region (including the municipalities to which we supply water on a wholesale basis) currently is, and has historically been, 
our core market, accounting for approximately 70% of water invoiced by volume in 2010. 

The following table sets forth the volume of water that we produced and invoiced for the periods indicated.  

Produced: 

São Paulo metropolitan region 
Regional systems 
Total 

Invoiced: 

São Paulo metropolitan region 
Wholesale 
Regional systems 
Reused water 
Total 

2008 

Year ended December 31, 
2009 
(in millions of cubic meters) 

2010 

2,107.9 
744.7 
2,852.6 

1,065.9 
284.5 
529.6 
0.2 
1,880.2 

2,091.7 
753.2 
2,844.9 

1,083.9 
288.0 
546.1 
0.8 
1,918.8 

2,164.4 
787.9 
2,952.3 

1,119.2 
293.3 
579.5 
0.3 
1,992.3 

The difference between the volume of water produced and the volume of water invoiced generally represents both physical and non-

physical water losses.  See “—Water Losses.”  In addition, we do not invoice: 

•               water discharged for periodic maintenance of water mains and water storage tanks; 

•               water supplied for municipal uses such as firefighting; 

•               water consumed in our own facilities; and 

•               estimated water losses associated with water we supply to favelas (shantytowns). 

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Seasonality 

Generally, higher water demand is observed during the summer and lower water demand during the winter.  The summer coincides 

with the rainy season, while the winter corresponds to the dry season.  The demand in the coastal region is increased by tourism, with the 
greatest demand occurring during the Brazilian summer holiday months.  

Water Resources 

We can abstract water only to the extent permitted by the DAEE pursuant to water usage rights granted by it.  Depending on the 
geographic location of the river basin or if the river crosses more than one state (federal domain), the approval of the National Water 
Agency (Agência Nacional de Águas), or the ANA, a federal agency under the Ministry of the Environment is required.  We currently 
abstract substantially all of our water supply from rivers and reservoirs, with a small portion being abstracted from groundwater.  Our 
reservoirs are filled by impounding water from rivers and streams, by diverting the flow from nearby rivers, or by a combination of both 
methods. 

In order to supply water to the São Paulo metropolitan region, we rely on 20 reservoirs of non-treated water and 192 reservoirs of 
treated water, which are located in the areas under the influence of the eight water producing systems comprising the interconnected water 
system of the São Paulo metropolitan region.  The capacity of the water sources available for treatment in this area is 71.7 cubic meters per 
second.  Total current installed capacity is 71.7 cubic meters per second, which can be treated from the interconnected water system of the 
São Paulo metropolitan region.  Average verified production during 2010 on the interconnected water system of the São Paulo metropolitan 
region was 67.3 cubic meters per second.  The Cantareira, Guarapiranga and Alto Tietê systems, as a whole, supplied 84.1% of the water 
we produced for the São Paulo metropolitan region in 2010. 

In 2010, the Cantareira system accounted for 48.6% of the water that we supplied to the São Paulo metropolitan region (including the 

municipalities to which we supplied water on a wholesale basis), which represented 74.5% of our gross revenues from sales and services 
(excluding revenues relating to the construction of concession infrastructure) for the year.  The authorization (outorga) for the Cantareira 
system to use the water in the Piracicaba water basin was renewed on August 6, 2004, for a ten-year period.  

Water basin committees are authorized to charge for water usage, or for dumping sewage into water bodies.  Since February 2003, we 

have been incurring expenses in connection with the use of water from the Paraíba do Sul river basin and, since January 2006, from the 
Piracicaba, Capivari and Jundiaí river basins.  At the end of 2010, we started to incur expenses in connection with the use of water from the 
Sorocaba and Médio Tietê river basins.  In 2011, we may start to incur expenses in connection with the use of water from the Baixo Tietê, 
Tietê/Jacaré, Baixada Santista and the Tietê Batalha river basins.  In 2012 we will start to incur expenses in connection with the use of 
water from the Alto Tietê river basin, where the São Paulo metropolitan region is located.  The ARSESP has adjusted our tariffs according 
to the formula that we have used since 2003.  According to the formula, “non-controllable” costs, such as costs related to water use, are 
passed on to our customers through our tariffs.  Although we expect to continue to pass on these expenses to our customers through our 
tariffs, we are uncertain as to whether the river basin committes will change the terms of the charges currently applied and whether we will 
be able to pass on these costs to our customers.  For more information on water usage regulation, see “—Water Usage.” 

The following table sets forth the water production systems from which we produce water for the São Paulo metropolitan region: 

Water production system: 
Cantareira 
Guarapiranga 
Alto Tietê 
Rio Claro 
Rio Grande (Billings reservoir) 
Alto Cotia 
Baixo Cotia 
Ribeirão da Estiva 
Total 
_________________ 
(1)   Average of the twelve months ended December 31, 2009 and 2010.   

38 

Production Rate(1) 

2009 

2010 

(in cubic meters per second) 

31.3 
13.1 
10.3 
3.7 
4.7 
1.0 
0.8 
0.1 
65.0 

32.7 
13.0 
10.9 
3.9 
4.8 
1.1 
0.8 
0.1 
67.3 

  
 
  
  
  
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We own all of the reservoirs in our production systems other than the Guarapiranga and Billings reservoirs and a portion of some of 
the reservoirs of the Alto Tietê system, which is owned by other companies controlled by the State.  We currently do not pay any charges 
with respect to the use of these reservoirs.  In December 2001, we entered into an agreement with the State whereby the State, among other 
things, agreed to transfer the remaining reservoirs in the Alto Tietê system to us.  We accepted, on a temporary basis, the reservoirs in the 
Alto Tietê System as part of the payment until the State transfers the property rights with respect to the reservoirs to us.  We are unable to 
predict whether and when these reservoirs will be transferred to us because the Public Prosecution Office of the State of São Paulo filed a 
civil public action alleging that a transfer to us of ownership of the Alto Tietê System reservoirs is illegal.  See “Item 3.D. Risk Factors—
Risks Relating to Our Control by the State of São Paulo—We may be required to acquire reservoirs that we use and that are owned by a 
State-controlled company, or we may be required to pay substantial charges to the owner with respect to our use of these reservoirs.” 

In January 2009, we began operating, monitoring and maintaining the reservoirs in the Alto Tietê system, formed by the Ponte Nova, 

Paraitinga, Biritiba, Jundiaí and Taiaçupeba reservoirs.  See “Item 8.A. Financial Information—Consolidated Statements and Other 
Financial Information——Legal Proceedings—Other Legal Proceedings.” 

In the cities of the countryside region, our principal source of water consists of surface water from nearby rivers and from wells.  The 

coastal region is provided with water principally by surface water from rivers and mountain springs. 

Statewide, we estimate that we are able to supply nearly all of the demand for water in all of the areas where we operate, subject to 
droughts and extraordinary climate events.  We were able to meet the demand for water in the São Paulo metropolitan region, primarily as 
a result of our water conservation program, reductions in water losses, and the installation of new water connections.  We installed 
189,000, 201,000 and 189,400 new water connections in 2008, 2009 and 2010, respectively. 

The interconnected water system of the São Paulo metropolitan region services 30 municipalities, of which 24 are operated directly by 
us under this system.  Through this system, we serve the other six municipalities on a wholesale basis, and the distribution is made by other 
companies or departments related to each municipality.   

In order to reach the final customer, the water is stored and transported through a complex and interconnected system.  This water 
system requires permanent operational supervision, engineering inspection, maintenance, and quality monitoring and measurement control. 

To ensure the continued provision of regular water supply in the São Paulo metropolitan region, we intend to invest R$1.8 billion from 
2011 to 2015 to increase our water production and distribution capacities as well as to improve the water supply systems.  In 2010, our total 
investment in water supply systems amounted to R$589.8 million. 

Water Treatment 

We treat all water at our water treatment facilities prior to placing it into our water distribution network.  We operate 213 treatment 

facilities, of which the eighth largest, located in the São Paulo metropolitan region, accounts for approximately 70% of all water we 
produced in 2010.  The type of treatment used depends on the nature of the source and quality of the untreated water.  Water abstracted 
from rivers requires extensive treatment, while water drawn from groundwater sources requires less treatment.  All water treated by us also 
receives fluoridation treatment. 

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Water Distribution 

We distribute water through our own networks of water pipes and mains, ranging in size from 2.5 meters to 100 millimeters in 
diameter.  Storage tanks and pumping stations regulate the volume of water flowing through the networks to maintain adequate pressure 
and continuous water supply.  The following table sets forth the total number of kilometers of water pipes and mains and the number of 
connections in our network as of the dates indicated. 

Table of Contents

2008 

As of December 31, 
2009 

2010 

Water distribution pipes and mains (in kilometers) 
Number of connections (in thousands) 

62,582 
6,945 

63,732 
7,118 

65,379 
7,295 

More than 90.0% of the water pipes in our water distribution network are made of cast iron or polyvinylchloride, or PVC.  Distribution 

pipes at customers’ residences typically are made from high-density polyethylene tubing.  Our water mains are mostly made of steel, cast 
iron or concrete. 

As of December 31 2010, our water distribution pipes and mains included:  (i) 33,505 kilometers in the São Paulo metropolitan region; 

and (ii) 31,874 kilometers in the Regional systems. 

As of December 31, 2010, we had 384 storage tanks in the São Paulo metropolitan region with a total capacity of 1.8 million cubic 

meters, and 1,782 storage tanks in the Regional systems.  As of that date, we had 124 treated water pumping stations in the São Paulo 
metropolitan region aqueduct system, including stations at treatment facilities, intermediate trunk transfer pumping stations and small 
booster stations serving local areas.   

Water mains that require maintenance are cleaned and their lining is replaced.  We are typically notified of water main fractures or 
breaks by the public through a toll-free number maintained by us.  We consider the condition of the water pipes and mains in the São Paulo 
metropolitan region to be adequate as of the date of this annual report.  Due to age, external factors such as traffic, the dense population, 
and commercial and industrial development, water pipes and mains in the São Paulo metropolitan region are somewhat more susceptible to 
degradation than those in the Regional systems.  To counter these effects, we have a maintenance program in place for water pipes and 
mains that is intended to address anticipated fractures and clogs due to brittleness and encrustation, and to help ensure water quality in the 
region. 

We expect that new customers will be responsible for covering part of the costs of connecting to our water distribution network.  Our 

water connection policy pays for the cost of installation of up to 20 meters of pipe between our distribution network and the point of 
connection.  The customer pays for any further pipe that is necessary for connection.  Thereafter, the customer must cover the costs of 
connecting to the network from the customer’s premises, including costs of purchasing and installing the water meter and related labor 
costs.  We perform the installation of the water meter and conduct periodical inspections and measurements.  After completion of 
installation, the customer is responsible for the water meter. 

The following table sets forth projected new water connections for the periods indicated. 

2011 

2012 

2013 

2014 

2015 

2016 

2017 

2018 

2019 

2011-
2019 

São Paulo metropolitan region 
Regional systems 
Total 

77.8 
65.7 
143.5 

77.2 
67.1 
144.3 

76.4 
68.2 
144.6 

75.9 
67.8 
143.7 

Water Losses 

Forecast 
(in thousands) 
76.1 
68.9 
145.0 

73.3 
69.4 
142.7 

73.0 
69.9 
142.9 

72.7 
70.2 
142.9 

80.1 
70.6 
150.7 

682.5 
617.8 
1,300.3 

The difference between the amount of water produced and the amount of water invoiced generally represents both physical and 
non-physical water losses.  Water loss percentage represents the quotient of (i) the difference between (a) the total amount of water 
produced by us less (b) the total amount of water invoiced by us to customers minus (c) the volume of water set out below that we exclude 
from our calculation of water losses, divided by (ii) the total amount of water produced by us.  We exclude the following from our 
calculation of water losses:  (i) water discharged for periodic maintenance of water mains and water storage tanks; (ii) water supplied for 
municipal uses such as firefighting; (iii) water we consume in our facilities; and (iv) estimated water losses associated with water we 
supply to favelas (shantytowns).  

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Since 2005, we have used a method of measuring our water losses based on worldwide market practice for the industry.  According to 
this measurement method, average water losses are calculated by dividing (i) average annual water loss by (ii) the average number of active 
water connections multiplied by 366.  The result of this calculation is the number of liters of water lost per connection per day. 

Using this calculation method, as of December 31, 2010, we experienced 486 liters/connections per day of water losses in the São 
Paulo metropolitan region and 278 liters/connections per day in the Regional systems, averaging 403 liters/connections per day.  We plan 
to reduce total water losses from 403 liters/connections per day to 211 liters/connection per day between 2010 and 2019.  Over the same 
period, in terms of percentage, we intend to reduce total water losses from 26.0% to 13.0%.  Our strategy to reduce water loss has two 
approaches: 

•               reduction in the level of physical losses, which result mainly from leakage, primarily by replacing and repairing water mains 

and pipes, and installing probing and other equipment, including strategically located pressure-regulating valves; and  

•               reduction of non-physical losses, which result primarily from the inaccuracy of our water meters installed at our customers’ 
premises and at our water treatment facilities, and from clandestine and illegal use, by upgrading and replacing inaccurate water 
meters and expanding our anti-fraud personnel. 

We are taking measures to decrease physical losses by reducing response time to fix leakages to less than 24 hours and by better 
monitoring non-visible water mains fractures.  Among other initiatives, we have adopted the following measures to reduce physical water 
losses: 

•               the introduction of technically advanced valves to regulate water pressure throughout the water mains in order to maintain the 

appropriate water pressure to the downstream consumption needs each day.  These valves are programmed to respond 
automatically to variations in demand.  During peak usage, the flow of water in the pipes is at its highest point; however, when 
demand decreases, pressure builds up in the water mains and the resulting stress on the network can cause significant water loss 
through cracks and an increase in ruptures of the pipes.  The technically advanced valves are equipped with probes programmed to 
feed data to the valve in order to reduce or increase pressure to the water mains as water usage fluctuates.  As of December 31, 
2010, we had installed 1,751 valves at strategic points in the network, with 1,053 valves being installed in the São Paulo 
metropolitan region and 698 in the Regional systems;  

•               the reconfiguration of interconnected water distribution to permit the distribution of water at lower pressure;  

•               the implementation of routine operational leak detection surveys in high water pressure areas to reduce overall water losses;  

•               the monitoring of and improved accounting with respect to water connections, especially for large volume customers; 

•               regular checking on inactive customers and monitoring non-residential customers that are accounted for as residential 

customers and, therefore, billed at a lower rate;  

•               preventing fraud with the use of new, more sophisticated water meters that are more accurate and less prone to tampering;  

•               installing water meters where none are present; and  

•               conducting preventive maintenance of existing and newly installed water meters. 

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Water Quality 

We believe that we supply high quality treated water that is consistent with standards set by Brazilian law, which are similar to the 
standards set in the United States of America and Europe.  Pursuant to the Brazilian Ministry of Health (Ministério da Saúde) regulations, 
we have significant statutory obligations regarding the quality of treated water.  These laws set certain standards that govern water quality.   

In general, the State of São Paulo has excellent water quality from underground or superficial water sources.  However, high rates of 
population growth, increased urbanization and disorganized occupation of some areas of the São Paulo metropolitan region has reduced the 
quantity and quality of water available to serve the population in the southern area of the São Paulo metropolitan region and in the coastal 
region.  Currently, we successfully treat this water to make it potable.  We also work to recover the quality of water of mains and invest in 
improvements of our treatment systems to ensure the quality and availability of water for the upcoming years. 

Water quality is monitored at all stages of the distribution process, including at the water sources, water treatment facilities and on the 
distribution network.  We have 15 regional laboratories, one central laboratory, and laboratories located in all water treatment facilities that 
monitor water quality, as required by our standards and those set by statute.  These laboratories employ more than 300 technicians, 
biologists, engineers and chemists.  Our laboratories analyze an average of 50,000 samples per month on distributed water, with samples 
collected from residences.  Our central laboratory located in the city of São Paulo is responsible for organic compound analysis using the 
chromatographic and spectrometric methods, as well as heavy metals analysis by atomic absorption technique.  All of our laboratories have 
obtained the ABNT NBR ISO 9001 certification and our central laboratory and 12 of our regional laboratories have obtained the ABNT 
NBR ISO IEC 17025 accreditation (accreditation for general requirements for the competence of testing and calibration laboratories) 
awarded by the National Institute of Metrology, Standardization and Industrial Quality (Instituto Nacional de Metrologia, Normalização e 
Qualidade Industrial), or the INMETRO.  

All chemical products used for water treatment are analyzed and follow strict specifications set out in recommendations made by the 

National Health Foundation (Fundação Nacional de Saúde), or NHF, the Brazilian Association of Technical Rules (Associação Brasileira 
de Normas Técnicas), or the ABNT, and the American Water Works Association, or the AWWA, to eliminate toxic substances that are 
harmful to human health.  From time to time, we face problems with the proliferation of algae, which may cause an unpleasant taste and 
odor in the water.  In order to mitigate this problem, we work on:  (i) fighting algae growth at the water source and (ii) using advanced 
treatment processes at the water treatment facilities, which involve the use of powdered activated carbon and oxidation by potassium 
permanganate.  The algae growth creates significant additional costs for water treatment because of the higher volumes of chemicals used 
to treat the water.  In 2010, we did not detect significant algae growth.  

We participate in the New Life Program which includes a Water Source Program (Programa Mananciais), together with other 
organizations engaged in the promotion of urban development and social inclusion to mitigate the pollution problem in the São Paulo 
metropolitan region.  In addition, we also participate in the Clean Stream Program to clean up important streams in city of São Paulo.  See 
“—Capital Expenditure Program—Main Projects of Our Capital Expenditure Program—Metropolitam System Investment Program—New 
Life Program and Clean Stream Program.”  

We believe that there are no material instances where our standards are not being met.  However, we cannot be certain that future 

breaches of these standards will not occur. 

Fluoridation 

As required by Brazilian law, we have adopted a water fluoridation program designed to assist in the prevention of tooth decay among 
the population.  Fluoridation primarily consists of adding fluorosilicic acid to water at 0.7 parts per million.  We add fluoride to the water at 
our treatment facilities prior to its distribution into the water supply network. 

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Sewage Operations 

We are responsible for the collection and removal of sewage through our sewage systems and for its subsequent disposal with or 
without prior treatment.  As of December 31, 2010, we collected approximately 86% of all the sewage produced in the municipalities in 
which we operate in the São Paulo metropolitan region.  In addition, during the year ended December 31, 2010, we collected 
approximately 74% of all the sewage produced in the municipalities in which we operate in the Regional systems.  During 2010 we 
accounted for approximately 81% of all the sewage produced in the municipalities in which we operated in the State of São Paulo.  We 
installed 168,900, 184,900 and 233,500 new sewage connections in 2008, 2009 and 2010, respectively. 

Sewage System 

The purpose of our sewage system is to collect and treat sewage and to adequately dispose of the treated sewage.  As of December 31, 

2010, we were responsible for the operation and maintenance of 44,287 kilometers of sewage lines, of which approximately 23,235 
kilometers are located in the São Paulo metropolitan region and 21,052 kilometers are located in the Regional systems, respectively. 

The following table sets forth the total number of kilometers of sewage lines and the total number of sewage connections in our 

network for the periods indicated. 

Sewage lines (in kilometers) 
Sewage connections (in thousands) 

2008 

As of December 31, 
2009 

2010 

41,241 
5,336 

42,895 
5,520 

44,287 
5,718 

Our sewage system comprises a number of systems built at different times and constructed primarily from clay pipes and, more 
recently, PVC tubing.  Sewage lines larger than 0.5 meters in diameter are primarily made of concrete.  Our sewage system is generally 
designed to operate by gravitational flow, although pumping stations are required in certain parts of the system to ensure the continuous 
flow of sewage.  Where pumping stations are required, we use sewage lines made of cast iron. 

The public sewage system operated by us was structured in order to receive industrial sewage and sewage from non-domestic sources 

for treatment together with domestic sewage.  Industrial sewage has physical, chemical and/or biological characteristics that are 
qualitatively different from household effluents.  As a result, the discharge of industrial sewage into the public sewage system is subject to 
compliance with specific legal demands with the purpose to protect the sewage collection and treatment systems, the health of operators 
and the environment.  The current environmental legislation establishes standards for the discharge of these effluents into the public 
sewage system.  These standards are defined in Article 19A of State Decree No. 8,468 dated September 8, 1976.  To ensure compliance 
with legislation, periodic audits of the sewage produced by all industrial clients are conducted, and we also request self-monitoring reports 
from non-domestic sewage-producing sources. 

The discharge of these effluents into the public sewage system is based on technical and administrative procedures.  Before the 

discharge is permitted, we carry out acceptance studies that assess the capacity of the public sewage system to receive the discharge as well 
as the compliance with regulations.  Upon the conclusion of these studies, the technical and commercial conditions for receiving the 
discharge are established, which are then formalized in a document signed by us and the effluent producer.  Failure to comply with these 
conditions can lead to the application of penalties and the obligation of the effluent producer to conduct the necessary adjustments in a 
given time frame.  Non-compliance with these penalties and adjustments may ultimately result in the suspension of the connection and 
notification of the environmental protection agency (Companhia Ambiental do Estado de São Paulo), or the CETESB, in order for the 
applicable measures to be taken.  Effluents from our treatment facilities must comply with effluent limitation guidelines and observe the 
water quality of the receiving water bodies established by federal and state legislation.  Effluent limitation guidelines consist of a set of 
parameters that must be verified before the effluents are discharged into a water body.  Water quality standards are based on the 
classification of water bodies, and take into account the current or expected use of water.  These standards will become more rigorous 
according to the importance of the use of water. 

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We considered the condition of the sewage lines in the São Paulo metropolitan region to be adequate as of the date of this annual 
report.  Due to greater volume of sewage collected, a higher population and more extensive commercial and industrial development, the 
sewage lines in the São Paulo metropolitan region are more deteriorated than those of the Regional systems.  To counter the effects of 
deterioration, we maintain an ongoing program for the maintenance of sewage lines intended to address anticipated fractures arising from 
obstructions caused by system overloads. 

Unlike the São Paulo metropolitan region, the countryside region does not generally suffer obstructions caused by sewage system 
overload.  The coastal region, however, experiences obstructions in its sewage lines primarily due to infiltration of sand, especially during 
the rainy season in the summer months.  In addition, the sewage coverage ratio in the coastal region is significantly lower than in the other 
regions served by us, with approximately 54% of all residences in the coastal region currently connected to our sewage network as of 
December 31, 2010.  

New sewage connections are made on substantially the same basis as connections to water lines:  we assume the cost of installation for 

the first 20 meters of sewage lines from the sewage network to all customers’ sewage connections and the customer is responsible for the 
remaining costs. 

The following table sets forth projected new sewage connections for the periods indicated. 

2011 

2012 

2013 

2014 

2015 

2016 

2017 

2018 

2019 

2011-2019 

Forecast 
(in thousands) 

São Paulo metropolitan region 
Regional systems 
Total 

74.1
94.7
168.8

75.0
87.4
162.4

81.6
74.8
156.4

98.6
71.0
169.6

106.6
83.4
190.0

125.7
84.6
210.3

126.4
85.6
212.0

129.4
94.1
223.5

95.7
76.6
172.3

913.1
752.2
1,665.3

Sewage Treatment and Disposal 

In 2010, approximately 68% and 88% of the sewage we collected in the São Paulo metropolitan region and the Regional systems, 

respectively, or 75.0% of the sewage we collected in the State of São Paulo, was treated at our treatment facilities and afterwards 
discharged into receiving water bodies such as inland waters and the Atlantic Ocean, in accordance with applicable legislation.  Our 
sewage treatment facilities have a limited capacity.  Flows in excess of this capacity are discharged directly, untreated, to inland waters and 
the Atlantic Ocean.  We currently operate 481 sewage treatment facilities and nine ocean outfalls.  

We operate 490 activated sewage treatment facilities, of which the five largest, located in the São Paulo metropolitan region, have 

treatment capacity of approximately 18 cubic meters of sewage per second.   

Sewage treatment in the Regional systems will vary according to the particularities of each area.  In the countryside region, treatment 

consists largely of stabilization ponds where the organic matter is treated and discharged to receiving waters.  There are 388 secondary 
treatment facilities in the countryside region that have treatment capacity of approximately 12.3 cubic meters of sewage per second. 

The majority of sewage collected in the coastal region receives treatment and disinfection and is then discharged into rivers and into 

the Atlantic Ocean through our ocean outfalls.  We have 75 sewage treatment facilities in the coastal region.   

Our sewage collection system is currently not sufficiently extensive to transport all sewage collected by us to our treatment facilities.  

As a result, a portion of the sewage collected by us is discharged untreated into receiving waters.  We are a party to a number of legal 
proceedings related to environmental matters.  See “Item 8.A. Financial Information—Consolidated Statements and Other Financial 
Information—Legal Proceedings.”  In addition, our capital expenditure program includes projects to increase the amount of sewage that we 
treat.  See “Item 4.A. History and Development of the Company—Capital Expenditure Program” and “4.B Business Overview—
Government Regulation—Environmental Regulation—Sewage Requirements.” 

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Sludge Disposal 

In the São Paulo metropolitan region, the treatment process used by most treatment facilities is the activated sludge process, where 
there is a liquid phase and a solid phase which generates sludge.  The activated sludge process was developed in England in 1914.  It is 
widely used for the treatment of household and industrial sewage.  The work consists of a system in which a biological mass grows, forms 
flakes, is continually re-circulated and put in contact with organic matter, always with the presence of oxygen (aerobic).  The activated 
sludge process is strictly biological and aerobic, in which the raw sewage and the activated sludge are mixed, agitated and aerated in units 
known as secondary decanters where the solid part is separated from the treated wastewater.  The settled sludge returns to the aeration tank 
or is removed for specific treatment. 

Sludge removed from the primary and secondary treatment processes typically contains water and a very small proportion of solids.  

We use filter presses, belt presses and centrifugation machines to abstract the water from the sludge.  In 2010, we produced 40,368 tons of 
sludge-dry base, of which 39,197 tons were discharged into landfills.  The remaining portion of the sludge-dry base was used as fertilizer in 
forest and agriculture projects, fuel development and concrete manufacturing.  

Sludge disposal must comply with State and Federal law requirements, such as Resolution No. 375 of August 29, 2006 of the 

CONAMA, Federal Law No. 12,305/2010, Federal Decree No. 7,404/2010, State Law No. 12,300/2006 and State Decree No. 54,645/2009. 

Principal Markets in Which We Operate 

As of December 31, 2010, we operated water and sewage systems in 364 of the 645 municipalities in the State of São Paulo.  In 
addition, we currently supply water on a wholesale basis to seven municipalities with an urban population of approximately 3.6 million. 

The following table provides a breakdown of gross revenues from water supply and sewage services by geographic market for the 

periods indicated.  

São Paulo metropolitan region 
Regional systems 
Total 

2008 

Year ended December 31, 
2009 
(in millions of R$) 
5,280.8 
1,764.6 
7,045.4 

4,988.4 
1,631.1 
6,619.5 

2010 

5,699.6 
1,956.3 
7,655.9 

The following table provides a breakdown of gross revenues from water supply and sewage services by category of activity for the 

periods indicated.  

Water supply 
Sewage services 
Adjustment to IFRS – revenue recognition (wholesale) 
Total 

Competition  

2008 

Year ended December 31, 
2009 
(in millions of R$) 
4,104.3 
3,131.9 
(190.8) 
7,045.4 

3,893.1 
2,945.6 
(219.2) 
6,619.5 

2010 

4,427.4 
3,398.7 
(170.2) 
7,655.9 

We believe there are at least two reasons behind a possible increase in our participation in the domestic sanitation market.  In the State 

of São Paulo, there are approximately 274 municipalities that operate their own water and sewage systems and that collectively have a 
population of approximately 13 million, or approximately 33% of the population of the State of São Paulo, excluding the population of the 
municipalities to which we provide water services on a wholesale basis.  Given our scale, we are well positioned to capture opportunities in 
these municipalities.  In comparison to the companies providing water and sewage services outside the State of São Paulo, we believe we 
have technological advantages compared to other water and sewage services providers, which should result in our competitively 
advantageous position in regions outside the State of São Paulo.  

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The competition for municipal concessions arise mainly from the municipalities, as they may resume the water and sewage services 
that were granted to us and start providing these services directly to the local population.  In this case, the municipal governments would be 
required to indemnify us for the unamortized portion of our investment.  See “—Business Overview—Our Operations—Concessions.”  In 
the past, municipal governments have terminated our concessions agreements before the expiration date.  Furthermore, municipal 
governments have tried to expropriate our assets in an attempt to resume the provision of water and sewage services to local populations.  
See “Item 8.A. Financial Information—Consolidated Statements and Other Financial Information—Legal Proceedings.”  We negotiate 
expired concession agreements and concession agreements to be expired with the municipalities in an attempt to maintain our existing 
areas of operations.  In the State of São Paulo we face competition from private and municipal water and sewage service providers. 

In recent years, we have also experienced an increasing level of competition in the market of water supply to large customers.  Several 

large industrial customers located in municipalities served by us use their own wells to supply themselves with water.  In addition, 
competition for the disposal of non-residential, commercial and industrial sludge in the São Paulo metropolitan region has increased in 
recent years as private companies offer stand-alone solutions inside the facilities of their customers.  We have also established new tariff 
schedules for commercial and industrial customers in order to assist us in retaining these customers. 

Billing Procedures 

The procedure for billing and payment of our water and sewage services is basically the same for each customer category.  Water and 
sewage bills are based upon water usage determined by monthly water meter readings.  Larger customers, however, have their meters read 
every 15 days to avoid non-physical losses resulting from faulty water meters.  Sewage billing is included as part of the water bill and is 
based on the water meter reading. 

Part of the bills for water and sewage services are delivered to our customers in person, mainly through independent contractors who 

are also responsible for reading water meters.  The remainder, by judicial determination, is sent by mail.  Water and sewage bills can be 
paid at some banks and other locations in the State of São Paulo.  These funds are paid over to us after deducting average banking fees 
ranging from R$0.29 to R$1.15 per transaction for collection and remittance of these payments.  

Customers must pay their water and sewage bills by the due date if they wish to avoid paying a fine.  We generally charge a penalty 

fee and interest on late bill payments.  In 2008, 2009 and 2010, we received payment of 97.3%, 94.7% and 95.5%, respectively, of the 
amount billed to our retail customers, and 94.4%, 93.9% and 95.5%, respectively, of the amount billed to those customers other than State 
entities, within 30 days after the due date.  In 2008, 2009 and 2010, we received 153.1%, 110.1% and 97.1%, respectively, of the amount 
billed to the State entities.  Amounts in excess of 100.0% reflect our recovery of amounts billed in prior years.  With respect to wholesale 
supply, in 2008, 2009 and 2010, we received payment of 64.4%, 68.7% and 58.3%, respectively, of the amount billed within 30 days. 

In the São Paulo metropolitan region, we monitor water meter readings by use of hand-held computers and transmitters.  The system 

allows the meter reader to input the gauge levels on the meters into the computer and automatically print the bill for the customer.  The 
hand-held computer tracks water consumption usage at each metered location and prepares bills based on actual meter readings.  We 
outsourced this billing system to third-party contractors that employ and train their own personnel whose training we supervise.  We also 
use this water meter reading system in some municipalities that we serve in the Regional systems, and we expect to expand this system to 
all the municipalities we serve by the end of 2012. 

Tariffs 

Tariff adjustments follow the guidelines established by the Basic Sanitation Law and the ARSESP.  The guidelines also establish 
procedural steps and the terms for the annual adjustments.  The adjustments have to be announced 30 days prior to the effective date of the 
new tariffs which occur in September, and last for a period of at least 12 months.  

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Tariffs have historically been adjusted once a year and for periods of at least 12 months.  We increased our tariffs for water and 
sewage services by 6.8%, 9.0% and 6.7% in August 2004, 2005 and 2006, respectively.  On September 2007, tariffs rose by 4.12%, except 
for water supply and sewage collection tariffs for consumption of more than 20 cubic meters in non-residential categories, which were 
adjusted by the cumulative inflation from August 2006 to July 2007 in the consumer price index (Índice Nacional de Preços ao 
Consumidor Amplo), or IPCA, index published by IBGE, which came to 3.74%. 

With the enactment of the Basic Sanitation Law, an independent regulatory entity is responsible for tariff regulation.  The ARSESP 
has been the independent regulatory entity, regulating tariffs, pursuant to a cooperation agreement between each municipality and the State 
or in locations where the State provide these services directly.  With respect to other municipalities where the ARSESP has not been 
explicitly selected to perform this task, we will depend on legal interpretation to conclude which independent entity will be in charge of 
regulating tariffs.  In 2007, the municipality of Lins decided to create its own regulatory entity to regulate tariffs.  However, in 2010 it 
changed its decision and transferred all regulatory matters (including tariff regulation), with the exception of tariff approval, to the 
ARSESP.  See “—Government Regulation—Tariff Regulation in the State of São Paulo” for additional information regarding our tariffs. 

As of the date of this annual report, the ARSESP applied the adjustment formula for our tariffs that we established on August 29, 
2003.  This adjustment was developed to better reflect changes in our cost structure.  According to this formula, the cost components of the 
Tariffs Adjustment Index, or IRT, are separated into two parts (“Part A” and “Part B”), where “Part A” encompasses all costs related to 
energy, water and sewage treatment materials; federal, state and local taxes; and financial compensation due to use of water resources.  
“Part B” encompasses all other costs and expenses.  “Part B” relates to the difference between the gross operating revenue and the value of 
“Part A” for the same period.  The adjustment of “Part A” is based on the effective cost variation observed in its components during the 
preceding 12-month period.  “Part B” is adjusted by the IPCA index.  The adjustment to the formula used by ARSESP replaced the 
variable gross operating revenue for the variable cost of reference.   

In September 2008, we adjusted our tariffs by 5.10% pursuant to the ARSESP’s authorization.  In August 2009, the ARSESP approved 

a 4.43% adjustment for our water and sewage tariffs, starting on September 11, 2009.  In August 2010, the ARSESP approved a 4.05% 
adjustment for our water and sewage tariffs, starting on September 11, 2010.  This adjustment was valid for all municipalities served by us, 
except for the municipalities of São Bernardo do Campo and Lins, which have different rules and readjustment dates.  The tariffs in the 
municipality of São Bernardo do Campo are adjusted pursuant a different methodology due to the difference between the tariffs charged in 
that municipality when we assumed the service and the tariffs we were charging in other metropolitan municipalities we serve.  The 
adjustments in São Bernardo do Campo are set so that in September 2012 the tariff charged in this municipality and the tariff charged in the 
other municipalities of the region will be the same.  With respect to the municipality of Lins, our tariff is adjusted in January according to 
the variation of the IPCA for the last twelve-month period ended November 30. 

Since 2008, the ARSESP has been developing new concepts that might be included in the tariff structure and adjustment formula but it 
has so far regulated our tariff structure and adjustments according to the same structure and adjustment formula that we ordinarily follow.   

On July 22, 2009, the ARSESP released a Technical Note (Nota Técnica) regarding the methodology for the tariff adjustment process 
and submitted it for public comments.  On August 12, 2009, the ARSESP informed that the new methodology would not be applied for the 
2009 adjustment.  The ARSESP is currently working on the development and improvement of its new methodology and it expects to 
release a revised tariff structure and adjustments formula in 2012. 

In 2010, the ARSESP defined the rules to evaluate our equity base (Rule No. 156/2010).  We are currently in the process of hiring 

companies that will conduct such evaluation. 

In March 2011, the ARSESP published the schedule for our tariff revision, with a timeframe running throughout August 2012.  

Technical discussions will be held during 2011 to define the regulatory and economic models and to determine the regulatory 
compensation base (BRR).  The final data will be applied to these models during 2012, along with discussions about the tariff structure, 
public hearings, publication of results at the end of August, and the introduction of the new tariffs.  

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According to the ARSESP, the tariff revision will:  (i) set the initial framework of periodic tariff revisions for all municipalities with a 
program agreement with our Company, and that receive services regulated by the ARSESP; (ii) discuss once again all the criteria adopted 
to determine the cost of services, the tariff framework, the subsidies policy, etc.; (iii) create a methodology, standards and procedures for 
future revisions and adjustments; and (iv) rely on the broad involvement of the municipalities, the concessionaires, consumers, investors, 
etc. 

In line with the tariff revision schedule published, in March 2011 the ARSESP announced the proposed methodology to be used to 
calculate the weighted average cost of capital and opened the discussion to public and other interested parties’ comments until April 2011.  
In May 2011, the ARSESP released a regulatory post-tax weighted average cost of capital of 8.06%. 

We divide tariffs into two categories:  residential and non-residential.  The residential category is subdivided into standard residential, 
residential social and favela  (shantytowns).  The residential social tariffs apply to residences of low-income families, residences of persons 
unemployed for up to 12 months and collective living residences.  The favela  tariffs apply to residences in shantytowns characterized by a 
lack of urban infrastructure.  The latter two sub-categories were instituted to assist lower-income customers by providing lower tariffs for 
consumption.  The non-residential category consists of:  (i) commercial, industrial and public customers; (ii) “not-for-profit” entities that 
pay 50.0% of the prevailing non-residential tariff;  (iii) government entities that have entered into a water loss reduction agreement with us 
and pay 75.0% of the prevailing non-residential tariff; and (iv) public entities that have entered into program agreements, for municipalities 
with a population of up to 30,000 and with half or more classified according to their degree of social vulnerability by the Social 
Vulnerability Index of São Paulo (Índice Paulista de Vulnerabilidade Social), or IPVS, 5 and 6, of the SEADE, obtained through the 
analysis of the 2000 Census figures, and start to receive tariff benefits, in accordance with our normative ruling, for the category of public 
use, at the municipality level.  The tariffs are equal to those offered to the commercial/entity of social assistance and that corresponds to 
50.0% of the public tariffs without contractual provisions referred to in item (iv) above. 

We established a new tariff schedule, effective May 2002, for commercial and industrial customers that consume at least 5,000 cubic 

meters of water per month and that enter into fixed demand agreements (take-or-pay) with us for at least one-year terms.  In October 2007, 
the minimum volume for entering into these agreements was reduced from 5,000 cubic meters per month to 3,000 cubic meters per month.  
We believe this tariff schedule will help prevent our commercial and industrial customers from switching to the use of private wells.  Since 
2008, we have been authorized by the ARSESP to establish tariffs for non-residential customers, such as industrial and commercial 
customers, that consume more than 3,000 cubic meters per month, with a maximum tariff equal to the tariffs applicable to non-residential 
customers that consume more than 50 cubic meters per month.  In 2010, the ARSESP authorized a reduction in the minimum volume of 
consumption for customers that enter into demand agreements with us to a minimum of 500 cubic meters per month. 

We establish separate tariff schedules for our services in each of the São Paulo metropolitan regions and each of the countryside and 
coastal regions which comprise our Regional systems.  Each tariff schedule incorporates regional cross-subsidies, taking into account the 
customers’ type and volume of consumption.  Tariffs paid by customers with high monthly water consumption rates exceed our costs of 
providing water service.  We use the excess tariff billed to high-volume customers to compensate for the lower tariffs paid by low-volume 
customers.  Similarly, tariffs for non-residential customers are established at levels that subsidize residential customers.  In addition, the 
tariffs for the São Paulo metropolitan region generally are higher than tariffs in the countryside and coastal regions. 

Sewage charges in each region are fixed and are based on the same volume of water charged.  In the São Paulo metropolitan region 

and the coastal region, the sewage tariffs equal the water tariffs.  In the countryside region, sewage tariffs are approximately 20.0% lower 
than water tariffs.  Wholesale water rates are the same for all municipalities served.  We also make available sewage treatment services to 
those municipalities in line with the applicable contracts and tariffs.  In addition, various industrial customers pay an additional sewage 
charge, depending on the characteristics of the sewage they produce. 

48 

  
Each category and class of customer pays tariffs according to the volume of water consumed.  The tariff paid by a certain category and 

class of customer increases progressively according to the increase in the volume of water consumed.  The following table sets forth the 
water and sewage services tariffs by (i) customer category and class and (ii) volume of water consumed charged during the years and 
period stated in the São Paulo metropolitan region.  

Customer Category Consumption 

2008(2) 

As of December 31, 
2009(3) 

2010(4) 

Table of Contents

Residential 

Standard Residential: 

0-10(1) 
11-20 
21-50 
Above 50 

Social: 

0-10(1) 
11-20 
21-30 
31-50 
Above 50 

Favela (shantytown): 

0-10(1) 
11-20 
21-30 
31-50 
Above 50 

Non-Residential 

Commercial/Industrial/Governmental: 

0-10(1) 
11-20 
21-50 
Above 50 

Social Welfare Entities: 

0-10(1) 
11-20 
21-50 
Above 50 

Government entities that employ the Rational Use of the Water Program 
(Programa de Uso Racional da Água), or PURA, with reduction agreement: 

0-10(1) 
11-20 
21-50 
Above 50 
______________________ 
(1)     The minimum volume charged is for ten cubic meters per month. 
(2)     From September 11, 2008 to September 10, 2009. 
(3)     From September 11, 2009 to September 10, 2010. 
(4)     Since September 11, 2010. 

1.31 
2.04 
5.09 
5.61 

0.44 
0.77 
2.70 
3.86 
4.26 

0.34 
0.38 
1.27 
3.86 
4.26 

2.62 
5.09 
9.78 
10.18 

1.31 
2.56 
4.91 
5.08 

1.97 
3.82 
7.34 
7.63 

1.36 
2.13 
5.32 
5.86 

0.46 
0.80 
2.82 
4.03 
4.45 

0.35 
0.40 
1.33 
4.03 
4.45 

2.74 
5.32 
10.21 
10.63 

1.37 
2.67 
5.13 
5.31 

2.05 
3.99 
7.67 
7.97 

1.42 
2.22 
5.54 
6.10 

0.48 
0.83 
2.93 
4.19 
4.63 

0.37 
0.42 
1.38 
4.19 
4.63 

2.85 
5.54 
10.62 
11.06 

1.42 
2.78 
5.34 
5.53 

2.14 
4.15 
7.98 
8.29 

Both in 2009 and 2010, the average tariff calculated for the Regional systems was approximately 30% below the average tariff of the 

São Paulo metropolitan region. 

Marketing Channels 

As of December 31, 2010, we were the concessionaire for the provision of water supply and collection, treatment and disposal of 
sewage services directly to end consumers for 364 municipalities of the State of São Paulo.  We also supply water on a wholesale basis to 
six municipalities in the São Paulo metropolitan region and to the municipality of Sumaré.  It is the responsibility of these municipalities to 
then distribute the water to end consumers.  We provide sewage services to five of these municipalities.  Because of our distribution 
infrastructure, end consumers to whom we offer water services on a wholesale basis cannot alternatively acquire such services directly 
from us.  For more information on service concessions, see “4.B. Business Overview—Concessions.” 

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Energy Consumption   

Energy is essential to our operations, and as a result we are one of the largest users of energy in the State of São Paulo.  In the year 
ended December 31, 2010, we used 1.7% of the total energy consumption in the State of São Paulo.  To date, we have not experienced any 
major disruptions in energy supply.  Any significant disruption of energy to us could have a material adverse effect on our business, 
financial condition, results of operations or prospects.  See “Item 3.D. Risk Factors—Risks Relating to Our Business—We are exposed to 
risks associated with the provision of water and sewage services.”  

Energy prices have a significant impact on our results of operations.  An average increase in energy prices of 17.6% in 2003 negatively 

affected our results of operations in 2004.  In 2010, 44.7% of our total energy consumption occurred within the “free market”, where we 
can more efficiently negotiate the supply of energy.  Energy was provided by Companhia Energética São Paulo, or CESP, pursuant to a 
long-term contract expiring in 2012. 

Insurance 

We maintain insurance covering, among other things, fire or other damage to our property, office buildings and third-party liability.  

We also maintain insurance coverage for directors’ and officers’ liability (D&O insurance).  We currently obtain our insurance policies by 
means of public bids involving major Brazilian and international insurance companies.  As of December 31, 2010, we had paid a total 
aggregate amount of R$8.1 million in premiums, covering R$2,754.3 million on assets, third-party liabilities and D&O insurance.  We do 
not have insurance coverage for business interruption risk because we do not believe that the high premiums for such insurance are 
justified by the low risk of major interruption.  In addition, we do not have insurance coverage for liabilities arising from water 
contamination or other problems involving our water supply to customers and for environmental related liabilities and damages.  We 
believe that we maintain insurance at levels customary in Brazil for our type of business. 

Environmental Matters 

Our environmental policy, which we revised in January 2008, established environmental management directives that allow us to 
become a contributing force to environmental sustainability and excellence.  These directives are based on a systematic approach to the 
environment, which allow us to develop a plan that integrated economic, environmental and social dimensions of our work with sustainable 
use of natural resources. 

In order to coordinate the environmental demands with the specific needs of the different places we operate, we have implemented 20 

Environmental Management Centers (Núcleos de Gestão Ambiental), or NGAs.  The NGAs are closely involved in operational matters, 
providing decision-making support at a local level and seeking to ensure that environmental guidelines are respected throughout our 
organization.  In this manner, they help contribute to the ongoing improvement of our environmental performance. 

We have the following environmental management programs: 

•         execution of a program to obtain ISO 14001 certification.  We received the certifications for 50 treatment facilities, including 
those located in the São Paulo metropolitan, countryside and coastal regions.  65 of our treatment facilities and ETAs have 
implemented the Environmental Management System (EMS), and we expect to extend it progressively to our remaining 
installations;  

•         participation in the Carbon Disclosure Project (CDP) and adherance to the Carbon Disclosure Project DCPC Supply Chain; 

•         conception and formation of the Corporate Management of Greenhouse Gas Program (Programa Corporativo de Gestão de 

Emissões de Gases de Efeito Estufa);   

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•         the development of a conceptual model of environmental balance sheet for the years 2009 and 2010, aiming to improve the 

Company’s balance sheet by properly documenting investments made for the betterment of the environment; 

•         the monitoring and controlling compliance with conduct adjustment terms and judicial agreements relating to the environment; 

•         formation and implementation of a corporate program for maintenance and regularization of environmental licences and of 

granting water usage rights’; 

•         the implementation of the Environmental Education Program (PEA SABESP), including over one hundred environmental 

education actions and projects involving the community and other shareholders;  

•         institutional representation of SABESP in the State and National Systems of Water Resources, including the training of company 
representatives to participate in councils of the National and State System for the Management of Water Resources and The 
Environment (Sistemas Nacional e Estadual de Gerenciamento de Recursos Hídricos e de Meio Ambiente), including training of 
the representatives for participation in the process of establishing criteria for the charging of water usage, monitoring of water 
basin plans (Planos das Bacias), water bodies classification programs and the establishment or review of specific laws; 

•         the structuring of educational activities related to analyzing, managing, and communicating environmental risks; 

•         specific training programs to train and qualify professionals to participate as technical assistants in legal proceedings involving 

environmental matters; and  

•         implementation of the SABESP 3-Rs Program (Programa SABESP 3Rs) for the reduction, re-use and recycling of waste of 

commercial buildings, a program involving the two largest administrative bodies of our Company with plans to include all other 
administrative bodies. 

In addition to corporate environmental management initiatives, since 2008 we launched several projects to benefit the environment by 

engaging the community and third parties with non-governmental organizations, including: 

•               Oil Recycling Program (Programa de Reciclagem de Óleo de Fritura), or PROL; 

•               Sustainable Planet (Planeta Sustentável);  

•               One million Trees in Cantareira (Programa “Um Milhão de Árvores no Cantareira”);  

•               Eyes in the Atlantic Rainforest (De Olho na Mata Atlântica);  

•               Eye on Water (Olho d’Água);  

•               Green Hug (Abraço Verde);   

•               Sabesp’s Native Species Saplings Nursery (Viveiros Sabesp);  

•               Community Gardens (Hortas Comunitárias);  

•               Program of Lectures on Environmental Management (Ciclos de Conferências de Gestão Ambiental); and 

•               Supporters of Sustainability (Audiências de Sustentabilidade).  

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Climate Change Regulations:  Reduction of Greenhouse Gases (GHG) 

We are required to comply with laws and regulations related to climate change, including international agreements and treaties to 

which Brazil is a signatory. 

The São Paulo State Climate Change Policy (Law No. 13,798), enacted on November 9, 2009, seeks to reduce global emissions of 

carbon dioxide by 20.0% by 2020 compared with 2005 levels.  Brazil’s Climate Change Policy (Law No. 12,187), enacted on 
December 29, 2009, establishes a voluntary national commitment to reduce Brazil’s currently projected GHG emissions for 2020 by a 
percentage between 36.1% and 38.9%.  If legislation requires us to reduce our emissions, we may do so by transforming biogas from the 
treatment of sewage into energy, for example, which may lead to potential economic gains. 

We have begun significant initiatives, such as the corporate program for water loss reduction and the implementation of small 
hydroelectric power plants, to reduce GHG emissions during the coming years.  We recently launched the Aquapolo project, the fifth 
largest project in the world to use reclaimed water production for industrial purposes, which uses treated sewage as input.  This project, 
capable of producing 1,000 liters per second (Ps) of reclaimed water, will increase the supply of treated water for the São Paulo 
metropolitan region and may potentially reduce GHG emissions.  Our investments in the Aquapolo project amounted to approximately 
R$252 million.  We are also in the process of hiring consultants to develop a management program for GHG emissions.  The project also 
includes studies of impacts and risks related to climate change and the study of potential scenarios based on our emissions of GHG. 

At this point, it is still not possible to predict if climate change policies will provide opportunities or generate new costs for us.  
Reducing our emissions of carbon dioxide will involve costs and expenses in implementing more stringent control mechanisms, adopting 
pollution prevention measures and actions to minimize the generation of GHGs.  We may not receive financial incentives to offset all or 
part of these costs.  In addition, if limitations in GHG emissions affect our supply chain and increase our costs, we may not be able to pass 
on these costs to our end consumers.  See “4.B.  Business Overview—Tariffs.” 

Regulation of GHG emissions could also benefit us in the short term, since we may be able to obtain subsidies, financial investments 

and tax incentives for projects to protect and restore water sources, conserve water, treat sewage, conserve energy, increase energy 
efficiency, and promote self-generated energy, among other projects that seek to reduce the impact of climate change. 

Carbon Disclosure Project 

•               Carbon Disclosure Project Investors.  We participate in the Carbon Disclosure Project – CDP, a global initiative focused on 

the financial risks related to climate change.  Through this project, main international institutional investors ask the world’s largest 
companies to demonstrate that they are managing carbon effectively.  We have received and responded the project’s 
questionnaires since 2006.  The companies that opt to have their answers disclosed to the public, such as our case, have their 
answers published in an international website of public interest.  The questionnaire asks mainly questions related to the aspects of 
climate change and corporate governance, the physical, financial and regulatory effects of climate change, and opportunities that 
affect or could positively or negatively affect us. 

•               Carbon Disclosure Project Supply Chain.  On December 2010, we adhered to the Carbon Disclosure Project – CDP Supply 

Chain 2011.  The project seeks to encourage the adoption of a standard methodology by our main suppliers of goods and services 
to measure risks related to climate change and GHG emissions. 

Physical Effects of Climate Change 

Since our financial performance is closely linked to climate patterns that influence in the availability of water (in terms of quantity and 

quality of water resources), extreme weather conditions may adversely affect our business and operations.  If long-term climate change 
causes significant alterations in environmental conditions, such as an increase in the frequency of extreme weather conditions, this could 
affect the quality and quantity of water available for abstraction, treatment and supply, affecting the costs of services and tariffs. 

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An increase in heavy rainfall can impact water quality and the regular operation of water sources, including abstraction of water from 

our dams, through increased soil erosion, silting, pollution and eutrophication of aquatic ecosystems.  In addition, increased flows of 
rainwater into sewage systems may overwhelm the capacity of sewage treatment plants.  We may need to build larger reservoirs, since it is 
not feasible to increase the size of our existing reservoirs, or increase operational capacity by further automating our existing equipment.  
To increase automation, we would need to purchase and operate tools to measure dam levels and volumes, river output and the rain in 
hydrographic basins, create mathematical models for real time operations, and train technicians to operate these systems.  As an alternative, 
we may need to implement new production systems. 

In the case of prolonged periods of drought, for example, reduced water levels in dams can cause an increase in the concentration of 

plant matter by increasing eutrophication and, consequently, increasing water treatment costs and operational complexity.  In addition, 
prolonged periods of drought in watersheds such as the São Paulo metropolitan region, where most of our production is concentrated, may 
result in the growth of vegetation in the reservoir flooding areas, which can impact water quality due to the accumulation of organic 
matter.  In such cases our production costs may increase, affecting our financial margins and the quality of water we produce.  Droughts 
also lower reservoir levels available for hydroelectric plants, which may lead to power shortages, particularly since hydroelectric power 
accounts for most of Brazil’s electric energy supply.  A lack of rainwater could lead to instability in domestic water supplies and in sewage 
collection and treatment services, which could damage our reputation.  In addition, because we are one of the largest consumers of 
electricity in the State of São Paulo, a potential increase in electricity tariffs due to a shortage of hydroelectric power could have a 
significant economic impact on us. 

We are also the concessionaire for water and sewage services for all the coastal municipalities of the State of São Paulo.  A rise in the 
sea level would result in increased salinity of inland water supplies, which may affect water treatment in these areas.  Rising sea levels may 
also increase infiltration rates and alter the runoff regime of the sewage systems, which may affect the sanitary system. 

Extreme climate changes may also affect the extraction, production and transportation of the materials necessary for our operations, 
such as water treatment materials, and may lead to an increase in the cost of these materials.  A rise in air temperature could also increase 
consumer demand for water, increasing the need to expand both water supply and sewage treatment. 

See “Item 3.D. Risk Factors—Risks Relating to Our Business—The enactment of new laws and regulations relating to climate change 

and the change in existing regulation, as well as the physical effects of climate change, may result in increased liabilities and increased 
capital expenditures, which could have a material adverse effect on us”. 

Government Regulation 

Basic sanitation services in Brazil are subject to an extensive federal, state and local legislation and regulation that, among other 

matters, regulates: 

•               the granting of concessions to provide water and sewage services; 

•               the development of public private partnerships; 

•               the need of a public bidding process for the appointment of private water and sewage services providers; 

•               the need of setting up an agreement for the appointment of public water and sewage services providers; 

•               the joint management of public services through cooperation, allowing for a program agreement without the need for a public 
bidding process for the service provider, subject to the condition that the planning, execution and monitoring activities are not 
executed by the service provider; 

•               minimum requirements for water and sewage services; 

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•               water usage; 

•               water quality and environmental protection; and 

•               governmental restrictions on the incurrence of indebtedness applicable to state-controlled companies. 

General 

Pursuant to Article 23 of the Brazilian Constitution, water and sewage services are the joint responsibility of the federal government, 

the states and the municipalities.  Article 216 of the Constitution of the State of São Paulo provides that, by law, the State must provide the 
conditions for efficient management and adequate expansion of water and sewage services rendered by its agencies and State-controlled 
companies or any other concessionaire under its control.  State law authorized our formation to plan, provide and operate water and sewage 
services in the State and also acknowledged the autonomy of the municipalities. 

Pursuant to Article 175 of the Brazilian Constitution, the rendering of public services, such as water and sewage services, is the 
responsibility of the applicable public authority.  However, any such public authority has the right to render these services directly or 
through a concession granted to a third party. 

In Brazil, there are three federal legal regimes for contracting water and sewage services:  (i) public concessions, regulated by Law No. 

8,987/1995, which require a prior public bidding process; (ii) administration of public services through cooperation agreements between 
the federal government and local public authorities at State and municipal level without the need for a public bidding process, regulated by 
the Public Consortia and Cooperation Agreement Law; and (iii) public-private partnerships, regulated by Law No. 11,079/2004, used to 
grant concessions to private companies to provide public services and used in relation with construction works associated with the 
provision of public services.  Until 2005, we had adopted the regime for public concessions.  Following the entry into force of the Public 
Consortia and Cooperation Agreement Law, we adopted the administration of public services through cooperation agreements, which can 
be used alongside the other two regimes. 

The Public Consortia and Cooperation Agreement Law and the Basic Sanitation Law have caused significant impacts in the 

development of the state sanitation policy and the regulatory structuring of the industry. 

Because we are the legal concessionaire for the State of São Paulo for water and sewage services, serving approximately 59% of the 
State’s population and providing sanitation services through concession agreements, the Consortium Law affects us on the expiry of our 
concession agreements entered into in the 1970s when the Brazilian Sanitation Plan (Plano Nacional de Saneamento), or PLANASA, was 
created.  The Consortium Law has caused important changes in the relationship among municipalities, states and public sanitation service 
providers, most notably in mixed capital companies, such as us, because of the implementation of the program agreements as a substitute 
for concession agreements. 

In addition, the Basic Sanitation Law in its role as a general guideline for the development of the Brazilian sanitation industry, 

addresses the conditions for the delegation of water and sewage services, the exercise of ownership by the granting authority and the 
regulatory conditions for the industry.  The Basic Sanitation Law also provides for a significant amendment to Article 42 of the 
Concessions Law, which establishes the termination of concessions prior to the expiration date and the reversibility conditions for 
unamortized assets.  The amendment requires that the service provider be compensated for unamortized assets, prioritizing an agreement 
between the parties setting out the criteria for calculation and payments of indemnity. 

The Basic Sanitation Law 

On January 5, 2007, the Federal Law No. 11,445, or the Basic Sanitation Law, was enacted, establishing nationwide guidelines for 

basic sanitation and seeking to create appropriate solutions for the situation of each state and municipality, facilitating the technical 
cooperation between the state and municipalities.  In addition, the federal government will enact its public policy to facilitate access to 
financing alternatives that are compatible with the costs and terms of the sanitation industry, in substitution of the PLANASA model.  On 
June 21, 2010, the federal government enacted Federal Decree No. 7,217, regulating the Basic Sanitation Law.  See “Risk Factors—Risks 
Relating to our Business—We cannot anticipate the effects that further developments of the Basic Sanitation Law and its interpretation will 
have on the basic sanitation industry in Brazil and on us.”  

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The Basic Sanitation Law establishes the following principles for basic sanitation public services:  universalization, integrality, 
efficiency and economic sustainability, transparency of actions, social control and integration of infrastructure and services with the 
management of water resources.  It does not define the ownership of the sanitation services, but establishes the minimum liability for the 
exercise of ownership, such as the development of the sanitation plan, definition of the person responsible for regulation and control, 
establishment of the rights and obligations of the users and of the social control mechanisms.  It also defines the regionalized performance 
of the services (i.e., one single provider serves two or more owners, for which there may be one plan for the combination of services). 

In addition, the Basic Sanitation Law defines the guidelines and objectives of the federal basic sanitation policy to be observed when 

securing public funds generated or operated by agencies or entities of the federal government, and foresees the possibility of having 
subsidies as an instrument of social policy to ensure access to basic sanitation services to everyone, particularly the low-income 
population.  The subsidies may be granted either directly, through tariffs or indirectly, depending on the characteristics of the beneficiaries 
and on the source of the funds. 

Furthermore, the Basic Sanitation Law also provides that the sanitation services may be interrupted by the service provider, in the 

event of default of payment of the tariffs by the customer, among other reasons, after written notice, as long as minimum health 
requirements are met. 

The Basic Sanitation Law also establishes the criteria for the reversal of assets at the time of termination of the agreement and with 
regard to the concessions, such as those that have expired or are effective for an indefinite term, or those that were not formalized by an 
agreement.  In addition, the Basic Sanitation Law provides the basis for calculating the amount of an indemnity due, which must be 
calculated by a specialized institution chosen by mutual agreement between the parties. 

Pursuant to the Basic Sanitation Law, the parties of the concession may enter into an agreement with respect to the payment of the 

indemnification due to the concessionaire.  However, in the absence of an agreement, the Basic Sanitation Law establishes that the 
indemnification must be paid in no more than four equal and successive annual installments, with the first installment payable by the last 
business day of the fiscal year in which the assets are reversed.  

Concessions 

Concessions for providing water and sewage services are formalized by agreements executed between the state or municipality, as the 
case may be, and a concessionaire to which the performance of these services is granted in a given municipality or region.  Our concessions 
normally have a contractual term of up to 30 years.  However, our concessions in general can be revoked at any time if certain standards of 
quality and safety are not met, or in the event of default of the terms of the concession agreement.  

A municipality that chooses to assume the direct control of its water and sewage services must terminate the current relationship by 
duly compensating the service provider.  Subsequently, the municipality will be in charge of rendering services or of conducting a public 
bidding process to grant the concession to potential concessionaires, including agreements with public companies directly.  Although the 
Constitution of the State of São Paulo determines that the relevant municipality would have to pay us for the unamortized book value of the 
assets related to the concession and assume any corresponding debt, with the exclusion of any amounts that have been paid to us by the 
municipality, upon termination or non-renewal of the concession, the payment for termination may not be effected immediately, and any 
termination could negatively affect our cash flows, operating results and financial situation.  See “Item 3.D. Risk Factors—Risks Relating 
to Our Business—Municipalities may, under certain circumstances, terminate our concessions before their expiration and the compensation 
may be inadequate to recover the full value of our investments.” 

The Federal Concessions Law No.8,987/1995 and the State Concessions Law No. 7,835/1992 require that the granting of a concession 
by the government be preceded by a public bidding process.  However, the Federal Public Bidding Law No. 8,666/1993, which establishes 
the rules for the public bidding process, provides that a public bidding process can be waived under certain circumstances, including in the 
case of services to be provided by a public entity created for such specific purpose on a date prior to the effectiveness of this law, provided 
that the contracted price is compatible with what is practiced in the market.  Furthermore, a provision of the Federal Public Bidding Law, 
as amended by the Public Consortia and Cooperation Agreement Law, provides that the program contracted can be executed with waiver of 
a public bidding process.  

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In the majority of municipalities where we operate, the new contracts have been formalized pursuant to the provisions of the Federal 

Public Bidding Law that allows the public bidding process to be waived under certain circumstances.  However, due to the discussion over 
whether the State or municipal authorities have the right to grant rights to provide basic sanitation services in municipal areas, negotiations 
of the terms of our new contract for the provision of water and sewage services in the city of São Paulo, were more complicated.  See 
“Related Party Transactions―Agreement with the State and the City of São Paulo”. 

On November 25, 2003, Municipal Law No. 13,670/2003 was enacted creating the Municipal System for Regulation of Water Supply 

and Sanitary Sewage Services (Sistema Municipal de Regulação dos Serviços de Abastecimento de Água e Esgotamento Sanitário), 
providing for its constitution and operation and also establishing the Municipal Sanitation Plan (Plano Municipal de Saneamento).  
According to this law, the Mayor of the city of São Paulo has powers to grant and monitor formal concessions for water and sewage 
services in the city of São Paulo.  Subsequent to Municipal Law No. 13,670/2003, the Governor of the State filed a legal action claiming 
that this law was unconstitutional and, as a consequence, the applicability of Municipal Law No. 13,670/2003 was suspended.  On 
April 20, 2005 the court ruled, by majority of votes, in favor of the Governor of the State.  The city of São Paulo appealed the decision and 
a final decision is still pending to this date.  See “Item 3.D. Risk Factors—Risks Relating to Our Business—The terms of our new 
agreement to provide water and sewage services in the city of São Paulo could have a material adverse effect on us.” 

On June 18, 2009, Municipal Law No. 14,934/2009 was enacted, authorizing the city of São Paulo to enter into an agreement with us 
and revoking Municipal Law No. 13,760/2003.  On June 23, 2010, we entered into a formal agreement with the State and the city of São 
Paulo to regulate the provision of water and sewage services in the city of São Paulo for a 30-year period, which may be extended for an 
additional 30-year period. 

Public Consortia and Cooperation Agreement Law for Joint Management 

On April 6, 2005, the federal government enacted Federal Law No. 11,107, or the Federal Public Consortia and Cooperation 

Agreement Law, which regulates Article 241 of the Brazilian Constitution.  This statute provides general principles to be observed when a 
public consortia enters into contracts with the Brazilian political divisions and subdivisions (the federal government, states, the Federal 
District and municipalities) aiming at the joint management of public services of common interests. 

Federal Decree No. 6,017/2007 details the conditions of establishment of joint management and the execution of the program 

agreement regulating the Public Consortia and Cooperation Agreement Law.  This federal legislation introduces significant changes in the 
relationship among municipalities, states and companies providing public sanitation services, prohibiting the latter from exercising 
activities of planning, oversight and regulation, including tariff regulation, of the services and creating the program agreement for 
contracting entities whose share control is held by one of the Brazilian political divisions and subdivisions upon waiver of the public 
bidding process and compliance with concession legislation, as applicable. 

On January 13, 2006, the Governor of the State of São Paulo enacted State Decree No. 50,470, amended by State Decrees No. 52,020, 
dated July 31, 2007, and No. 53,192, dated July 1, 2008, which provide for the rendering of water and sewage services in the State of São 
Paulo.  According to these decrees, we may enter into agreements with municipalities in connection with the provision of water and sewage 
services by means of the so-called “program agreement without a public bidding process”.  In addition, these decrees establish that we will 
continue to render services in the areas covered by the concession granted by the State.   

Based on these statutes, in January 2007 we executed our first program agreement with the municipality of Lins, located in the State of 

São Paulo.  Subsequently, we formalized agreements with other municipalities in the State of São Paulo.  These other municipalities 
transferred the oversight and regulation of our services to the State of São Paulo through a cooperation agreement. 

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On June 8, 2006, the State of São Paulo enacted Decree No. 50,868 creating the Commission for the Regulation of Sanitation Service 

of the State of São Paulo (Comissão de Regulação do Serviço de Saneamento do Estado de São Paulo – CORSANPA) to regulate sanitation 
services.  The Commission for the Regulation of Sanitation Service of the State of São Paulo is directly subordinated to the State 
Secretariat for Sanitation and Water Resources. 

The main duty of the Commission for the Regulation of Sanitation Service of the State of São Paulo was conducting studies for the 

creation of a regulatory agency for the basic sanitation industry and the presentation of legal and regulatory measures.  The completion of 
such duties resulted in the publication of supplementary Law No. 1,025 of December 7, 2007, which created the ARSESP. 

The ARSESP regulates the basic sanitation services that belong to the State, relating to the federal and municipal jurisdictions and 

prerogatives, and is responsible for:   

•         the compliance with and enforcement of state and federal basic sanitation legislation; 

•         the publication of the organizational platform for the services, indicating the types of services provided by the State, as well as the 

equipment and facilities that compose the system; 

•         the acceptance, where applicable, of the legal attributions of the jurisdictional authority; 

•         the establishment, in accordance with the tariff guidelines defined by Decree No. 41,446/96, of tariffs and other methods that 
provide compensation for our services, adjustment and review of such tariffs and methods to ensure the financial-economic 
balance of services and low-cost tariffs through mechanisms that increase service efficiency and lead to the distribution of 
productivity gains to society; and 

•         the approval, oversight and regulation (including tariff issues) of the sewage treatment and wholesale water supply agreements 

entered into between the state supplier and other suppliers, pursuant to Article 12 of the Basic Sanitation Law. 

With respect to municipal basic sanitation, the ARSESP oversees and regulates services (including tariff issues) that have been 

delegated by municipalities to the State as a result of cooperation agreements, that authorize program agreements between the 
municipalities and us for as long as it is convenient to the municipality’s public interest. 

For its services, the ARSESP charges 0.50% of the annual total invoice from sales and services (excluding revenues relating to the 

construction of concession infrastructure) of the municipality.  This fee is collected from municipalities that have a signed program 
agreement with us and the municipalities located in the metropolitan regions. 

Supplementary Law No. 1,025/2007 also amended paragraphs 5, 7 and 8 and added paragraphs 9 and 10 to Article 1 of State law No. 

119/73, which created us, expanding the range of services that we can render, with the inclusion of urban rainwater drainage and 
management, urban cleaning and solid waste management, as well as the operation of power generation, storage, conservation and sales 
activities, for our own or third-party use. 

In addition, the rules simplified the process for the expansion of our business in Brazil and abroad, authorizing us: 

•               to participate in the controlling block or the capital of other companies; 

•               to create subsidiaries, which may become majority or minority shareholders in other companies; and 

•               to establish partnerships with national or foreign companies, including other state or municipal basic sanitation companies in 

order to expand our activities, share technology and expand investments related to basic sanitation services. 

Furthermore, Supplementary Law No. 1,025/2007 maintained the State Sanitation Council (Conselho Estadual de Saneamento – 
CONESAN), created by Supplementary Law No. 7,750/92, as an advisory council to define and implement the state basic sanitation policy, 
and the State Sanitation Fund (Fundo Estadual de Saneamento - FESAN).  The State Sanitation Fund is connected to the State Secretariat 
for Sanitation and Water Resources, and collects and manages resources that support State-approved programs, as well as the development 
of technology, management and human resources and a sanitation information system, in addition to other support programs.  

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In 2009, the ARSESP enacted certain rules establishing (i) the general conditions for the services we render, (ii) the communication 

process for any failure in the provision of our services, and (iii) the penalties for deficiencies in the provision of basic sanitation services.  
These rules are expected to be implemented during 2011 and 2012, and will affect mainly our sales and operations. 

On July 30, 2010, the ARSESP published Resolution No. 156 establishing the methodology and general criteria for the definition of 
our regulatory asset base, in order to develop the tariff review process and to define the initial parameters of the auditing process that the 
ARSESP will have to conduct pursuant to the terms of the Basic Sanitation Law.  The methodology has been defined and, in general terms, 
assets will be evaluated by reposition costs and weighted by the respective usage ratio.  In March 2011, the ARSESP published the tariff 
review schedule and opened the public hearing for the proposed methodology for the calculation of the weighted average cost of capital, in 
May 2011, the ARSESP released a regulatory post-tax weighted average cost of capital of 8.06%.  According to the schedule, in 2011 the 
economic regulation model will be discussed and the regulatory asset base will be defined.  In 2012, the new tariff will be applied after the 
finalization of the model, tariff structure discussions, public consultations and publication of results. 

Public-Private Partnerships 

The PPP is a form of agreement with the public administration used for the concession of services to private enterprises, as well as for 

construction works coupled with the provision of services.  PPPs are regulated by the State of São Paulo through Law No. 11,688, which 
was enacted on May 19, 2004.  PPPs may be used for:  (i) implantation, expansion, improvement, reform, maintenance, or management of 
public infra-structure; (ii) provision of public services; and (iii) exploitation of public assets and non-material rights belonging to the State. 

Payment is conditional upon performance.  The payment may be collected through:  (i) tariffs paid by users; (ii) use of resources from 
budget; (iii) assignment of credits belonging to the State; (iv) transfer of rights related to the commercial exploitation of public assets; (v) 
paper of assets; (vi) paper from public debts; and (vii) other revenues. 

In our case, payment is conditional upon performance and is collected through the use of resources from the budget. 

Public Financing 

In January 2007, the President of Brazil announced a new Growth Acceleration Plan, known as the “PAC”, which includes major 

investments in infrastructure services, including the provision of water and sewage, housing, as well as highways, airports, ports and 
energy services, that would benefit the poor population of Brazil.  PAC calls for a total investment of R$504.0 billion through 2010, 
including a R$40.0 billion investment in the sanitation sector.  The majority of the investment of the PAC would be provided by State-
owned companies and the private sector, while the rest would come from the federal government.  Of the amounts dedicated to the 
sanitation sector, we have obtained various loans from the BNDES and Caixa Econômica Federal totaling R$2.8 billion, the proceeds of 
which are being used to fund various projects.  See “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital 
Resources—Indebtedness Financing.” 

Public Bidding Procedures 

Pursuant to the Federal Public Bidding Law, the public bid process commences with publication by the granting authority in a federal, 

state or municipal official newspaper, as the case may be, and another leading Brazilian newspaper.  The publication announces that the 
granting authority will carry out a public bidding contest pursuant to provisions set forth in an edital  (invitation to bid).  The invitation to 
bid must specify, among other terms:  (i) the purpose, duration and goals of the bid; (ii) the participation of bidders, either individually or 
forming a consortium; (iii) a description of the qualifications required for adequate performance of the services covered by the bid; (iv) the 
deadlines for the submission of the bids; (v) the criteria used for the selection of the winning bidder; and (vi) a list of the documents 
required to establish the bidder’s technical, financial and legal capabilities.  

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The invitation to bid is binding on the granting authority.  Bidders may submit their proposals either individually or in consortia, as 

provided for in the invitation to bid.  After receiving proposals, the granting authority will evaluate each proposal according to the 
following criteria, which must have been set forth in the invitation to bid: 

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•               the technical quality of the proposal; 

•               lowest cost or lowest public service tariff offered; 

•               a combination of the criteria above; or 

•               the largest amount offered in consideration for the concession. 

The provisions of State Law No. 6,544 of November 2, 1989, as amended, or the State Public Bidding Law, parallel the provisions of 
the Federal Public Bidding Law.  The Federal and State bidding laws will apply to us in the event that we seek to secure new concessions.  
Moreover, these bidding laws currently apply to us with respect to obtaining goods and services from third parties for our business 
operations or in connection with our capital expenditure program, in each case subject to certain exceptions. 

Water Usage 

State law establishes the basic principles governing the use of water resources in the State of São Paulo in accordance with the State 

constitution.  These principles include: 

•               rational utilization of water resources, ensuring that its primary use is to supply water to the population; 

•               optimizing the economic and social benefits resulting from the use of water resources; 

•               protection of water resources against actions which could compromise current and future use; 

•               defense against critical hydrological events which could cause risk to the health and safety of the population or economic and 

social losses; 

•               development of hydro-transportation for economic benefit; 

•               development of permanent programs of conservation and protection of underground water against pollution and excessive 

exploitation; and 

•               prevention of soil erosion in urban and rural areas, with a view to protecting against physical pollution and silting of water 

resources. 

Under State law, implementation of any project that involves the use of surface or underground water requires prior authorization or 

licensing from the competent government authority.  In order to implement these principles, authorizations granting a right of use are 
required from the relevant public authority for water usage (whether for collection, release of effluents or otherwise), modification of the 
regime and modification of the quality or the quantity of the existing water.  In the case of rivers under the federal government’s domain 
(rivers crossing more than one state), the ANA is the public authority which grants the authorization.  With respect to the rivers under a 
state’s domain, the applicable state authority has jurisdiction to grant the right of use.  In the State of São Paulo, the DAEE is the public 
authority responsible for granting such authorizations.  The DAEE has, as its objectives, establishing (i) a policy for the use of water 
resources with a view to developing the water business of the State, and (ii) plans, studies and projects related to the use of water resources, 
directly or by means of agreements with third parties. 

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Our main operating units have been granted water usage rights; however, we also have several operating units where water grants are 

not fully in place.  To help obtain the remaining water grants, we have established a corporate program for the legalization and 
maintenance of grants. 

In July 2000, the ANA was established to develop the National System for Water Resources Management.  According to existing law, 
the hydrographic basin committees are authorized to charge users, such as us, for the abstraction of water from, or dumping of sewage into, 
water bodies controlled by these agencies.  We have paid R$53.1 million to the ANA and the DAEE since 2003, and these agencies have 
used these amounts to pay for expenses related to the National System for the Management of Water Resources (Sistema Nacional de 
Gerenciamento de Recursos Hídricos) and principally to sponsor studies, programs, projects and constructions provided for in the Water 
Basin Plan (Plano de Bacia).  Resources for these projects may be loaned or provided to governmental agencies and corporations, 
including us, for use in projects related to the conservation and recovery of water resources. 

State Law No. 12,183, which was enacted on December 29, 2005, established the basis for charging for the use of the water resources 

under the domain of the State of São Paulo.  To apply such charging, the law provides for, among other provisions, the formulation of 
criteria by the basin committees, the creation of basin agencies and the organization of a registered list of water resource users.  The basin 
committee’s proposals regarding the criteria to calculate the amounts to be charged at each basin must be approved by the State Water 
Resource Council, and formalized by a decree issued by the State Governor. 

Water Quality 

Administrative Rule No. 518/2004, issued by the Ministry of Health of the federal government, provides the standards for potable 
water for human consumption in Brazil.  This rule is similar to the U.S. Safe Drinking Water Act and the regulations enacted by the U.S. 
Environmental Protection Agency, which establishes rules for sampling and limits related to substances that are potentially hazardous to 
human health. 

In compliance with Brazilian law, the physical-chemical, organic and bacteriological analyses carried out for water quality control 
follow the methodologies of the Standard Methods for Water and Wastewater (21st edition) of the American Water Works Association. 

Decree No. 5,440/2005 provides that the quality of water must be disclosed to consumers.  We have been complying with this 

regulation by publishing the required information in monthly bills and annual reports delivered to all consumers that we serve. 

Environmental Regulation 

The implementation and operation of water and sewage systems are subject to strict federal, state and municipal laws and regulations 

on environmental and water-resource protection.  The National Environmental Council (Conselho Nacional de Meio Ambiental), or the 
CONAMA, is the federal agency responsible for the regulation of potentially polluting activities.  In the State of São Paulo, the Companhia 
Ambiental do Estado de São Paulo, or CETESB, is the governmental entity responsible for the control, supervision, monitoring and 
licensing of polluting activities, pursuant to State Law No. 997 of 1976 and State Law No. 13,542 of 2009.  The CETESB regulates the 
control of environmental pollutants. 

The control and environmental planning instruments are defined by several legal instruments, such as State Law No. 997/1976, which 
regulates the environmental pollution control; the CONAMA Resolution No. 05/1988, which requires licensing of sanitation projects that 
cause significant alterations to the environment; the CONAMA Resolution No. 237/1997, which regulates (i) environmental licenses, (ii) 
the federal, state and local jurisdiction over environmental issues, (iii) the list of activities subject to licensing; and (iv) environmental 
impact studies and reports; State Decree No. 47,400/2002 and related articles from State Law No. 9,509/1997 regarding environmental 
licensing; and State Decree No. 8,468/76, the CONAMA Resolution No. 357/2005, the CONAMA Resolution No. 397/08 and the 
CONAMA Resolution No. 430/11 and the granting of rights for using and interfering with water resources (Portaria Departamento de 
Águas e Energia Elétrica 717/96).  Projects with significant environmental impact are subject to specific studies prepared by 
multidisciplinary teams that present a series of recommendations focused on minimizing the environmental impact.  These studies are then 
submitted for analysis and approval by the government authorities.  The licensing process is composed of three stages, including the 
following licenses:  

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•               preliminary license – granted in the planning stage, approving the location and concept and attesting to the project’s 

environmental feasibility; 

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•               installation license – authorizing the beginning of works for the installation of the project, subject to compliance with approved 

plans, programs and projects, including environmental control measures and other necessary technical requirements; and 

•               operation license – authorizing the operation of a unit or activity, subject to compliance with the technical requirements 

contained in the installation license.  

We have established a program (Programa Corporativo de Manutenção e Regularização de licenciamento ambiental) to obtain all 
necessary licenses in an effort to bring us into full compliance with environmental regulations within five years.  As of the date of this 
annual report, we were not in possession of all licenses required in connection with our operations.  Our failure to obtain such licenses may 
result in the imposition of fines and penalties.  With respect to new operations, feasibility and environmental compliance are carried out 
throughout the project. 

Sewage Requirements 

State law sets forth regulations regarding pollution control and environmental preservation in the State of São Paulo.  State law 

establishes the conditions and limitations for waste discharge that impacts water, air and soil.  According to this law, in areas in which there 
is a public sewage system, all effluents of a “polluting source” must be discharged to such system.  It is the responsibility of the polluting 
source to connect itself to the public sewage system.  All effluents to be discharged are required to meet the standards and conditions 
established by the applicable environmental law, which allows such effluents to be treated by our treatment facilities and discharged in an 
environmentally safe manner.  Effluents that do not comply with such criteria are prohibited from being discharged into the public sewage 
system.  State legislation also establishes that liquid effluents, except those related to basic sanitation, be subjected to pre-treatment so that 
they meet the required mandatory levels before being discharged into the public sewage system.  National sanitation guidelines are also 
established in Article 45 of Federal Law No. 11,455/2007. 

The CETESB is authorized under State law to monitor discharges of pollutants into the environment and to enforce the requirements 

of State law.  The CETESB is responsible for issuing preliminary installation and operation licenses granted to the pollution sources, 
including sewage treatment facilities. 

The CETESB also regulates the discharge of effluents into water bodies and must approve all of our treatment facilities in accordance 

with federal and state regulations.  State and federal water resource legislation establish the charging of fees for the discharge of treated 
effluents into water bodies.  This provision is already in force in relation to some water basins, and is in different stages of implementation 
in remaining basins.  See “—Government Regulation—Water Usage.” 

Tariff Regulation in the State of São Paulo 

The tariffs for our services are subject to Federal and State regulation. 

On December 16, 1996, the governor of the State of São Paulo issued a decree which approved the existing tariff system and allowed 
us to continue to set our own tariffs.  We used to set our tariffs based on the general objectives of maintaining our financial condition and 
preserving “social equality” in terms of the provision of water and sewage services to the population while providing a return on 
investment.  The governor’s decree also directs us to apply the following criteria in determining our tariffs: 

•               category of use; 

•               capacity of the water meter; 

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•               characteristics of consumption; 

•               volume consumed; 

•               fixed and floating costs; 

•               seasonal variations; and 

•               social and economic conditions of residential customers. 

With the enactment of the Basic Sanitation Law and Federal Consortium Law, we are prohibited from planning, overseeing and 

regulating services, which includes determining the tariff policy to be adopted.  Such activities are to be exercised by the owner of the 
concession.  Other than the responsibility for planning, the remaining activities may not be delegated.   

Pursuant to the Basic Sanitation Law, tariff regulation is to be performed by an independent regulatory entity.  Municipalities can 
either create their own regulatory agency or delegate tariff regulation to the ARSESP.  In 2007, the municipality of Lins opted to create its 
own regulatory agency.  However, in 2010, it changed its decision and transferred the regulation (including of tariffs), with the exception 
of tariff approval, to the ARSESP.  As of the date of this annual report, all municipalities with which we had executed an agreement had 
delegated tariff regulation to the ARSESP.  As such, the ARSESP is already in charge of regulating tariffs for most of our concession and 
program agreements.  Nonetheless, we cannot be certain that other municipalities will delegate tariff regulation to the ARSESP in the 
future.  

The current tariff structure maintains different tariff schedules, depending upon whether a customer is located in the São Paulo 
metropolitan region or the Regional systems.  There are four levels of volume consumed for each category of customer, except for the 
residential social and favelas  (shantytowns).  The residential social tariffs apply to residences of low income families, residences of 
persons unemployed for up to 12 months and collective living residences.  The favela tariffs apply to residences in shantytowns 
characterized by a lack of urban infrastructure.  The latter two sub categories were instituted to assist lower income customers by providing 
lower tariffs for consumption.  Customers are billed on a monthly basis.  Water and sewage bills are based upon water usage determined by 
monthly water meter readings.  Larger customers, however, have their meters read every 15 days to avoid nonphysical losses resulting 
from faulty water meters.  Sewage billing is included as part of the water bill and is based on the water meter reading.  We are also 
authorized to enter into individual contracts with certain customers, such as municipalities, to supply water or sewage services on a 
wholesale basis. 

Before the enactment of the Basic Sanitation Law in 2007, we were subject to a federal law which limited the return on assets for 
water and sewage services to 12.0% per annum.  Return on our assets was calculated using operating income (before financial and certain 
other expenses) measured against our operational assets (property, plant and equipment and certain other assets), based on our financial 
statements prepared in accordance with the accounting practices adopted in Brazil, or Brazilian GAAP.  The Basic Sanitation Law revoked 
this law and extinguished this rule.  With respect to the criteria to calculate the return on assets, on July 30, 2010, the ARSESP adopted a 
new methodology for the calculation of return on assets, which uses the replacement cost of the assets (assuming replacement with new 
assets) as a basis for the calculation.  Although the ARSESP has indicated that it will implement the new methodology by 2012, we cannot 
assure you when the new rules will be enacted.  Meanwhile, the ARSESP has not altered the tariff formula and has continued to apply the 
same methodology as in prior years. See “Risk Factors— Risks Relating to Our Business—We cannot anticipate the effects that further 
developments of the Basic Sanitation Law and its interpretation will have on the basic sanitation industry in Brazil and on us”. 

Governmental Restrictions on Incurrence of Debt 

On June 30, 1998, the CMN issued Resolution No. 2,215/98 amending certain conditions that must be observed with respect to the 

external credit operations (i.e., foreign currency borrowings) of states, the Federal District of Brasilia, municipalities and their respective 
autarquias  (agencies), foundations and non-financial companies, including us.  This resolution provides, among other things, that, with 
certain exceptions applicable to the importation of goods and services:  

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•               the proceeds of external credit operations must be exclusively used to refinance outstanding financial obligations of the 

borrower, with preference given to those obligations that have a higher cost and a shorter term, and, until used for such purposes, 
the proceeds shall remain deposited, as directed by the Central Bank, in a pledged account; and 

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•               the total amount of the contractual obligation must be subject to monthly deposits in a pledged account, equal to the total debt 
service obligation, including principal and interest, divided by the number of months that the obligation is to be outstanding. 

The CMN resolution further provides that the requirements described above do not apply to financing transactions involving 

multilateral or official organizations such as the International Bank for Reconstruction and Development, or IBRD, the IADB or the JICA.  
The Central Bank regulation implementing this resolution provides, among other things, that the account referred to in the first bullet point 
above must be an account opened in a federal financial institution, which is to hold such funds until released for the purpose of refinancing 
outstanding obligations of the borrower.  The Central Bank regulation further provides that the account described in the second bullet point 
above must be an escrow account to be opened in a federal financial institution and to secure the payment of principal and interest on the 
external debt. 

Our foreign currency-denominated transactions are also subject to the approval of the National Secretariat of Treasury (Secretaria do 
Tesouro Nacional) and the Central Bank.  After reviewing the financial terms and conditions of the transaction, the National Secretariat of 
Treasury and the Central Bank will issue an approval for the closing of the foreign exchange transaction relating to the entry of the funds 
into Brazil and, following such entry and at our request, an electronic certificate of registration through which all scheduled payments of 
principal, interest and expenses will be remitted by us.  The electronic certificate of registration grants the borrower access to the market 
for foreign exchange. 

Lending Limits of Brazilian Financial Institutions 

The CMN limits the amount that Brazilian public financial institutions may lend to public sector companies, such as us.  Financing of 

projects which are put up for international bid and any financing in reais  provided to the Brazilian counterpart of such international bids 
are excluded from these limits. 

We are also subject to the provisions of CMN Resolution No. 2,827 of March 30, 2001, as amended, which limits the value of credit 

operations of financial institutions and other institutions authorized by the Central Bank with bodies and entities in the public sector. 

Scope of Business 

State Law No. 12,292, dated of March 2, 2006, amended State Law No. 119, dated of June 29, 1973, which created our Company, 

authorizes us to provide water and sewage services outside São Paulo (in other states of Brazil and other countries).  This law also 
authorizes us to own interests in other public or private-public companies and Brazilian or international consortiums.  In addition, this law 
permitted us to incorporate subsidiaries and enter into a partnership with or acquire interests in a private company with a corporate purpose 
related to the sanitation business. 

C.    Organizational structure 

Not applicable. 

D.    Property, Plant and Equipment 

Our principal property, plant and equipment comprise administrative facilities which are stated at historical costs less depreciation.  

The reservoirs, water treatment facilities, water distribution networks consisting of water pipes, water mains, water connections and water 
meters, sewage treatment facilities, and sewage collection networks consisting of sewer lines and sewage connections are recorded as 
intangible assets (concession assets).  As of December 31, 2010, we operated through 44,287 kilometers of water pipes and mains and 
65,379 kilometers of sewer lines.  As of that same date, we operated 213 water treatment facilities and 490 sewage treatment facilities, as 
well as six water quality control laboratories.  

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We own our headquarters building and all other major administrative buildings.  We have pledged some of our properties as collateral 
to the federal government in connection with a long-term financing transaction we have entered into with the IBRD that was guaranteed by 
the federal government.  We have also pledged part of our assets in the amount of R$249.0 million as collateral as of December 31, 2010, 
with respect to our indebtedness under the Special Program for Payment of Federal and Social Security Related Taxes in Installments 
(Programa de Parcelamento Especial para Impostos Federais e Previdenciários), or PAES program. 

As of December 31, 2010, the total net book value of our property, plant and equipment and intangible assets (including concession 

assets) was R$18,796.4 million. 

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All of our material properties are located in the State of São Paulo. 

ITEM 4A.     UNRESOLVED STAFF COMMENTS 

Not applicable. 

ITEM 5.        OPERATING AND FINANCIAL REVIEW AND PROSPECTS 

The following management’s discussion and analysis of financial condition and results of operations should be read in conjunction 
with our audited consolidated financial statements included elsewhere in this annual report.  The consolidated financial statements included 
elsewhere in this annual report have been prepared in accordance with IFRS.  This annual report contains forward-looking statements that 
involve risks and uncertainties.  Our actual results may differ materially from those discussed in the forward-looking statements as a result 
of various factors, including, without limitation, those set forth in “Risk Factors.” 

In the following discussion, references to increases or decreases in any period are made by comparison with the corresponding prior 

period, except as the context otherwise indicates. 

A.    Operating and Financial Review and Prospects 

Overview 

As of December 31, 2010, we operated water and sewage systems in the State of São Paulo, including in the city of São Paulo, Brazil’s 

largest city, and in 364 municipalities in the State of São Paulo, which represented 56.0% of all municipalities in the State.  We also 
provided water services on a wholesale basis to seven additional municipalities in which we did not operate water systems.  

The São Paulo metropolitan region, which includes the city of São Paulo, is our most important service region.  With a total population 

of approximately 20 million, the São Paulo metropolitan region accounted for 75.6% and 74.5% of our gross revenue from sales and 
services in 2009 and 2010 (excluding revenues relating to the construction of concession infrastructure), respectively.  60.4% of the 
concession intangible assets reflected on our balance sheet as of December 31, 2010 was located in this region.  In an effort to respond to 
demand in the São Paulo metropolitan region and because the region represents the principal opportunity to increase our net revenue from 
sales and services, we have concentrated a major portion of our capital expenditure program to expand the water and sewage systems and 
to increase and protect water sources in this region.  Our capital expenditure program is our most significant liquidity and capital resource 
requirement. 

Factors Affecting Our Results of Operations  

Our results of operations and financial condition are generally affected by our ability to raise tariffs, general economic conditions in 

Brazil and, in some previous periods, meteorological conditions. 

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In 2008, our net income was strongly affected by the global financial and economic crisis, which began in 2008 and whose effects 
were still present in 2009, resulted in a depreciation of the Brazilian real  against the U.S. dollar, which adversely affected our obligations 
denominated in foreign currency. 

In order to ensure its economic and financial strength, we have been working on increasing our efficiency and productivity gains.  For 

this reason, we have attempted to reduce costs.  In 2009, we decreased our staff by 9.3% pursuant to an Agreement for the Adjustment of 
Conduct (Termo de Ajustamento de Conduta), or TAC, with the State Public Attorney’s Office (Ministério Público Estadual).  Pursuant to 
the TAC, we laid off retirees who were still working for us and laid off employees representing approximately 2% of our workforce.  Our 
results of operations for the 2009 and 2010 fiscal years were also affected by a provision for severance payments in the amount of R$146.6 
million for employees who resigned in 2009 and R$19.0 million for employees who resigned in 2010. 

Our attempt to decrease costs implemented in 2009 started to show its results in 2010.  In 2010, our costs and expenses increased only 

1.5%, compared to an increase of 8.1% in our net income.  If we take into account the average IPCA rate variation of 5.04% in 2010, 
compared to the average IPCA rate in 2009, increase in costs represented an actual reduction of 2.8%.  This result is due mainly to 
decreases in personnel and materials (such as those related to equipment and production systems maintenance and treatment materials).  In 
2010, the volume invoiced increased 4.1% compared to 2009, with increases in all categories.  The main factors that led to the increase in 
volume invoiced were:  i) the reinitiation of industrial and commercial units production after the 2009 international economic crisis; and ii) 
actions aimed at improving volume measuring and recovery, such as the implementation of water measurement units (Unidades de 
Medição de Água) and the broadning of the scope of work in the agreement with External Sales Services Technicians (TACE – Técnicos de 
Atendimento Comercial Externo).  

Effects of Tariff Increases 

Our results of operations and financial condition are highly dependent upon our ability to increase tariffs for our water and sewage 
services.  Since the enactment of the Basic Sanitation Law in 2007, as a general rule, regulatory agencies will be responsible for setting, 
adjusting and reviewing tariffs, taking into consideration, among other factors, the following:   

•               political considerations arising from our status as a State-controlled company; 

•               anti-inflation measures enacted by the federal government from time to time; and 

•               when necessary, the readjustment to maintain the original balance between each party’s obligation and economic gain 

(equilíbrio econômico-financeiro) under the agreement. 

Readjustment of our tariffs continues to be set annually and depend on the parameters established by the Basic Sanitation Law and the 
ARSESP.  The guidelines also establish procedural steps and the terms for annual adjustments.  The annual adjustments must be announced 
30 days prior to the effective date of the new tariffs, which take effect in September and remain in place for a period of at least 12 months.  
See “4.B. Business Overview—Tariffs.” 

The following table sets forth, for the periods indicated, the percentage increase of our tariffs, as compared to three inflation indexes: 

Year ended December 31, 

2009 

2010 

Increase in average tariff(1) 
Inflation – IPC – FIPE 
Inflation – IPCA 
Inflation – IGP-M 
__________________ 
(1)   Since 2007, tariff readjustments have taken effect in September, one month after the readjustment announcement. 

4.4% 
3.7% 
4.3% 
(1.7)% 

Sources:  Central Bank, Fundação Getulio Vargas, or FGV, and Fundação Instituto de Pesquisas Econômicas.  

4.1% 
6.4% 
5.9% 
11.3% 

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Effects of Brazilian Economic Conditions 

As a company with all of its operations in Brazil, our results of operations and financial condition are affected by general economic 

conditions in Brazil, particularly by exchange rate fluctuations, inflation rates and interest rate levels.  For example, the general 
performance of the Brazilian economy affects demand for water and sewage services, and inflation affects our costs and margins.  The 
Brazilian economic environment has been characterized by significant variations in economic growth rates. 

General Economic Conditions 

Year 2008 was characterized by the worsening of the global financial and economic crisis.  As a result, the real  depreciated by 31.9% 
against the U.S. dollar in 2008.  Nonetheless, at December 31, 2008, Brazil had R$206.8 billion in currency reserves and a trade surplus of 
R$24.8 billion.  The average unemployment rate in Brazil’s principal metropolitan regions was 6.8% in 2009.  The crisis’ main effect on 
the Brazilian economy was a decline in expectations for economic activity in 2009 and, to a lesser extent, in 2010.  The Brazilian economy 
experienced higher lending rates, currency devaluation, decreasing stock prices and shrinking industrial production.  In order to ease the 
impact of the financial crisis on the Brazilian economy, the Brazilian government implemented measures for the flexibility of its monetary 
policy and tax relief measures.  These measures strengthened the domestic market and were key to economic recovery. 

In 2009, Brazilian GDP decreased 0.2% in comparison with 2008.  Nonetheless, at that same year Brazil had US$239.1 billion in 

currency reserves and its trade surplus was US$25.3 billion.  The average unemployment rate in Brazil’s principal metropolitan regions 
remained stable at 6.8% in 2009. 

In 2010, Brazilian GDP increased 7.5% in comparison with 2009.  At that same year, Brazil had US$288.6 billion in currency reserves 

and its trade surplus was US$20.3 billion.  The average unemployment rate in Brazil’s principal metropolitan regions was 6.7% in 2010. 

Interest Rates 

Interest rates in Brazil are closely linked to exchange rate fluctuations and inflation rates.  High domestic interest rates result in 

increases in our financial expenses and also negatively affect our ability to obtain financing, on a cost-effective basis, in the domestic 
capital and lending markets.  As a result, we may continue to require substantial amounts of foreign currency-denominated indebtedness in 
order to satisfy our liquidity and funding requirements, which may increase our exposure to exchange rate fluctuations, as discussed below. 

The official interest rate set by the Central Bank, the SELIC overnight rate, was 13.66% as of December 31, 2008.  In 2009, in order to 
boost the economy, the Central Bank reduced the official interest rate significantly, reaching 8.65% as of December 31, 2009.  In 2010, the 
Central Bank increased interest rates, and the official interest rate, as defined by the SELIC overnight rate target, was 10.66% as of 
December 31, 2010.  We have not utilized any derivative financial instruments or any hedging instruments to mitigate interest rate 
fluctuations. We do, however, continually monitor market interest rates in order to evaluate the possible need to refinance our debt. 

Inflation 

Inflation affects our financial performance by increasing our costs of services rendered and operating expenses. In addition, all of our 

real-denominated debt is indexed to take into account the effects of inflation.  Most of our real-denominated debt provides for inflation-
based increases in the respective principal amounts of that indebtedness, which are determined by reference to the daily government 
reference interest rate (Taxa Referencial), or TR, plus an agreed margin.  We cannot assure you that our tariffs will be increased, in future 
periods, to offset, in full or in part, the effects of inflation.   

Currency Exchange Rates 

We had total foreign currency-denominated indebtedness of R$2,248.9 million as of December 31, 2010, of which R$130.0 million 
relates to our short-term foreign currency-denominated obligations.  In the event of significant devaluations of the real  in relation to the 
U.S. dollar or other currencies, the cost of servicing our foreign currency-denominated obligations would increase as measured in reais, 
particularly as our tariff and other revenue are based solely in reais.  In addition, any significant devaluation of the real will increase our 
financial expenses as a result of foreign exchange losses that we must record.  For example, the 31.9% devaluation of the real in 2008 
increased our financial expenses and negatively affected our overall results of operations for the year.  In contrast, the 25.5% appreciation 
of the real against the U.S. dollar in 2009 led to a foreign exchange gain of R$528.4 million.  In 2010, the 4.3% appreciation of the real 
against the U.S. dollar led to a foreign exchange gain of R$66.1 million.  

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We manage our indebtedness portfolio closely to decrease the cost of servicing our indebtedness as a whole and our exposure to 
exchange rate fluctuations.  We do not speculate in foreign currencies, and we do not have any exposure to derivatives tied to foreign 
currencies. 

The following table shows the fluctuation of the real  against the U.S. dollar, the period-end exchange rates and average exchange 

rates as of or for the periods indicated: 

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Devaluation (appreciation) of the real versus U.S. dollar 
Period-end exchange rate – US$1.00 
Average exchange rate – US$1.00(1) 
______________________ 
(1)   Represents the average for period indicated. 
Source:  Central Bank. 

2008 

Year ended December 31, 
2009 

31.9% 
R$2.337 
R$1.838 

(25.5)% 
R$1.741 
R$1.998 

2010 

(4.3)% 
R$1.666 
R$1.760 

From time to time, we may enter into forward exchange transactions and financial funding transactions in reais  to mitigate foreign 

currency exposure.  In addition, we have monitored, overseen and controlled our foreign currency-denominated indebtedness, taking 
advantage of market opportunities to improve the profile of our indebtedness and reduce our costs.  As of December 31, 2010, we had no 
outstanding forward exchange transactions. 

Effects of Climate Change (Drought and Intense Rainfalls) 

We operate in a region of Brazil that has been prone to droughts, although historically droughts have not impacted all of our water 
supply systems equally.  Brazil experienced a prolonged and severe drought during 2000 and 2001. As a result, from mid-June to mid-
September of 2000, we rationed water in the south of the São Paulo metropolitan region, affecting approximately 3.5 million people, or 
approximately 20% of the total population of this region, which reduced our total water production by approximately 8%.  From 
April 2001 through January 2002 and from October to December 2003, we also rationed water in certain regions of the São Paulo 
metropolitan region, but on a much smaller scale.  This rationing on a smaller scale caused our total water production volume to be reduced 
by only 0.8%.  The effects of the drought continued to affect our systems through 2004.  Due to the water usage reduction bonus program 
that we operated from March to September 2004, when rainfall was extremely low and our reservoirs were at correspondingly low levels, 
and the return to normal rainfall levels that occurred throughout 2004 and early 2005, the conditions of our reservoirs improved in 2005.  In 
2006, rainfall was sufficient to enable us to maintain our reservoirs at levels reflecting the historic average.  In 2007 and 2008, rainfall 
exceeded the levels of previous years, increasing the volume of water held in our reservoirs and thereby providing a cushion to meet 
demand.  In 2009, rainfall levels were higher than the historic average and by the end of 2009, our reservoirs had a utilization rate of 
87.0%, compared to a 50.0% and 41.0% utilization as of December 31, 2008 and 2007, respectively.  As of December 31, 2010, our 
reservoirs had a utilization rate of 74.4%. 

Critical Accounting Estimates and Assumptions 

We make estimates and assumptions concerning the future.  The resulting accounting estimates will, by definition, seldom equal the 
related actual results.  The estimates and assumptions that have a significant risk of causing material adjustment to the carrying amount of 
our assets and liabilities within the next financial year are addressed below. 

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Allowance for Doubtful Accounts 

We record an allowance for doubtful accounts in an amount that our management considers sufficient to cover probable losses, based 

on an analysis of customer accounts receivable, in accordance with the accounting policy stated in Note 2.8 to our consolidated financial 
statements as of and for the years ended December 31, 2009 and 2010.  Provisions for the allowance for doubtful accounts are included in 
selling expenses, net of recoveries.  The net charge to this allowance was R$117.0 million, R$117.4 million and R$232.5 million in 2008, 
2009 and 2010, respectively. 

The methodology for determining the allowance for doubtful accounts requires significant estimates, considering a number of factors, 

including historical collection experience, current economic trends, estimates of forecast write-offs, the aging of the accounts receivable 
portfolio and other factors.  While we believe that the estimates used are reasonable, actual results could differ from those estimates. 

Fair Value of Financial Instruments 

In accordance with Brazilian GAAP, management estimates the fair value of financial instruments using information available in the 
market and appropriate estimating methodologies.  Management uses considerable personal judgment to interpret the information available 
in the market when developing estimates of fair value.  Therefore, the estimates presented may not necessarily indicate the value that 
would be obtained for the financial instruments if they were realized on the market. The use of different market assumptions and/or 
estimating methodologies could have a material effect on the estimated fair values. 

Indemnities Receivable 

Indemnities receivable is a long-term asset representing amounts receivable from the municipalities of Diadema and Mauá as 
indemnification for their unilateral termination of our water and sewage service concessions in 1995.  As of each of December 31, 2009 
and 2010, this asset amounted to R$146.2 million. 

Prior to their termination, pursuant to our concession contracts, we invested in the construction of water and sewage systems in these 
municipalities to meet our concession service commitments.  Upon the unilateral termination of the concessions by the municipalities of 
Diadema and Mauá, our assets were impounded by the municipal authorities, which took on the responsibility of providing water and 
sewage services in these areas.  At that time, we reclassified our property, plant and equipment balances relating to the impounded assets as 
long-term assets (indemnities receivable) and recorded impairment charges to reduce the carrying value of the assets to the estimated 
recoverable amounts which we had contractually agreed as fair compensation with these municipal authorities. 

Our rights to recover these amounts are being disputed by the municipalities, and no amounts have been received to date.  Based on the 
advice of legal counsel, we continue to believe that we have the right to receive those amounts, and we continue to monitor the status of the 
legal proceedings.  The ultimate amounts to be received however, if any, will most likely be subject to a final court decision.  Therefore, 
actual amounts received could differ from those recorded.  For more information, see Note 9 to our consolidated financial statements as of 
and for the years ended December 31, 2010 and 2009. 

Valuation of Long-Lived Assets 

As of December 31, 2010, we had property, plant and equipment and intangible assets of R$249.6 million and R$18,546.8 million, 

respectively.  

We review long-lived assets, primarily buildings, water and sewage system assets and concession intangible assets to be held and used 
in our business, for the purpose of determining and measuring impairment on a recurring basis or when events or changes in circumstances 
indicate that the carrying value of an asset or group of assets may not be recoverable.  According to Brazilian GAAP, we evaluate possible 
impairment by determining whether projected future operating income is sufficient to absorb the depreciation or amortization of long-lived 
assets, within the context of the balance sheet as a whole. 

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Studies supporting the write-offs for obsolescence and abandonment of projects are conducted in the accounting period of the write-
offs based on discounted cash flow projections, and approved by our board of directors.  We monitor the carrying value of our property, 
plant and equipment on an on-going basis and adjust the net book value to assure future projected operations will be sufficient to recover 
the carrying value of the assets. 

In evaluating impairment of our long-lived assets, we make significant assumptions and estimates regarding matters that are inherently 
uncertain, including projections of future operating income and cash flows, future growth rates and the remaining useful lives of the assets, 
among other factors.  In addition, projections are computed over an extended period of time, which subjects those assumptions and 
estimates to an even larger degree of uncertainty.  While we believe that the estimates we use are reasonable, the use of different 
assumptions could materially affect our valuations. 

Amortization of Intangible Assets 

Amortization is calculated when the intangible assets are available for use in the necessary condition established by the Company. 

Amortization reflects the period over the expected future economic benefits generated by the intangible asset and can be the period of 
the contract, depending on the contract.  The utilization of the assets is related to the useful life of the assets constructed by the Company 
and amortization of the intangible assets is considered in the calculation of the tariff. 

Amortization of the intangible assets finishes when the asset is totally consumed or is alienated, not being considered in the calculation 

of the tariff any longer, whichever occurs first. 

Depreciation of Property, Plant and Equipment 

Depreciation of our property, plant and equipment, primarily buildings, water and sewage service and other assets acquired, is 

provided using the straight-line method based on the estimated useful lives of the underlying assets.  While we believe that our estimates of 
current remaining estimated lives is reasonable, the use of different assumptions and estimates and changes in future circumstances, could 
affect the remaining useful lives of our asset, which could have a significant impact on our results of operations in the future. 

Provision for Contingencies 

As of December 31, 2010, we were party to judicial and administrative proceedings, relating to civil, environmental and tax matters, 
amounting to R$1,459.8 million (excluding the amount of R$120.2 million related to court deposits) with respect to which we considered 
the risk of loss as probable.  As of that date, proceedings with respect to which we considered the risk of loss as possible amounted to 
R$2,297.9 million, and those with respect to which we considered the risk of loss as remote amounted to R$20,202.4 million. 

We are a party to a number of legal proceedings involving significant monetary claims.  These legal proceedings include, among other 

types, disputes with customers and suppliers and tax, labor, civil, environmental and other proceedings. For a more detailed discussion of 
these legal proceedings, see Note 15 to our consolidated financial statements as of and for the years ended December 31, 2009 and 2010.  
We accrue for probable losses resulting from these claims and proceedings when we determine that the likelihood that a loss has occurred 
is probable and the amount of such loss can be reasonably estimated.  Therefore, we are required to make judgments regarding future 
events for which we often seek the advice of legal counsel.  As a result of the significant judgment required in assessing and estimating 
these provisions for contingencies, actual losses realized in future periods could differ significantly from our estimates and could exceed 
the amounts which we have provisioned. 

Pension Plans 

The present value of the pension obligations depend on a number of factors that are determined on an actuarial basis using a number of 

assumptions.  The assumptions used in determining the net cost (income) for pensions include the discount rate.  Any changes in these 
assumptions will impact the carrying amount of pension obligations. 

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We determine the appropriate discount rates at the end of each year, which is the interest rate that should be used to determine the 

present value of estimated future cash outflows expected to be required to settle the pension obligations. 

Other key assumptions for pension obligations are based in part on current market conditions.  Additional information on the pension 

plans under Plan G0 and G1 is disclosed in Note 16. 

Differences in actual experience or changes in assumptions could affect the carrying amount of pension obligations and expenses 

recognized in our results. 

Table of Contents

Certain Transactions with Controlling Shareholder 

Reimbursement Due from the State 

Reimbursement due from the State for pensions paid represent supplementary pensions (Plan G0) that we pay, on behalf of the State, 

to former employees of State-owned companies which merged to form our Company.  These amounts must be reimbursed to us by the 
State, as primary obligor. 

In November 2008, we entered into the third amendment to the agreement with the State relating to payments of pension benefits made 

by us on its behalf.  The State acknowledged that it owed us an outstanding balance of R$915.3 million as of September 30, 2008, relating 
to payments of pension benefits made by us on its behalf.  We provisionally accepted, but it is not recognized in our books, the reservoirs 
in the Alto Tietê System as partial payment in the amount of R$696.3 million, subject to the transfer of the property rights of these 
reservoirs to us.  Since November 2008, the State has been paying the remaining balance in the amount of R$219.0 million in 114 
successive monthly installments.  See Note 8 to our consolidated financial statements as of and for the years ended December 31, 2009 and 
2010 and “Item 7. Major Shareholders and Related Party Transactions”. 

Accounts Receivable from the State for Water and Sewage Services Rendered 

Certain of these accounts receivable have been overdue for a long period, and we do not reserve against such accounts receivable as 
we fully expect to recover these amounts and loss is not considered probable.  We have entered into agreements with the State with respect 
to these accounts receivable.  For further information on these agreements, see Note 8 to our consolidated financial statements as of and for 
the years ended December 31, 2009 and 2010 and “Item 7. Major Shareholders and Related Party Transactions.” 

Use of Certain Assets Owned by the State 

We currently use certain reservoirs in the Billings and Guarapiranga reservoirs which are owned indirectly by the State.  We currently 

do not pay any fees with respect to the use of these reservoirs.  However, we are responsible for maintaining and meeting the operating 
costs of these reservoirs.  If these facilities had not been made available for our use, we would have had to obtain water from more distant 
sources, which would be more costly.  The State does not incur operating costs on our behalf. 

The arrangement for use of the Billings and Guarapiranga reservoirs is provided for through a grant issued by the DAEE.  We have a 

right to use these reservoirs so long as we remain responsible for maintaining and meeting their operating costs. 

Results of Operations 

The following table sets forth, for the periods indicated, certain items in our statement of operations, each expressed as a percentage of 

net revenue from sales and services: 

Net revenue from sales and services 
Cost of sales and services 
Gross profit 
Selling expenses 
Administrative expenses 
Other operating expenses, net 
Operating profit 
Finance cost, net 
Income before income taxes 
Income taxes 
Net income 

2008 

Year ended December 31, 
2009 
(in millions of reais, except percentages) 

2010 

100.0% 
(57.4)% 
42.6% 
(6.4)% 
(7.4)% 
(1.6)% 
27.2% 
(12.5)% 
14.7% 
(3.7)% 
11.0% 

8,579.5 
(5,087.3) 
3,492.2 
(610.4) 
(717.1) 
(44.4) 
2,120.3 
(10.0) 
2,110.3 
(602.6) 
1,507.7 

100.0%
(59.3)%
40.7%
(7.1)%
(8.4)%
(0.5)%
24.7%
(0.1)%
24.6%
(7.0)%
17.6%

9,231.0 
(5,194.5) 
4,036.5 
(712.9) 
(653.2) 
1.8 
2,672.2 
(379.4) 
2,292.8 
(662.3) 
1,630.5 

100.0% 
(56.3)% 
43.7% 
(7.7)% 
(7.1)% 
− 
28.9% 
(4.1)% 
24.8% 
(7.2)% 
17.7% 

7,809.3 
(4,482.9) 
3,326.4 
(499.7) 
(580.0) 
(125.5) 
2,121.2 
(973.0) 
1,148.2 
(285.3) 
862.9 

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Year Ended December 31, 2010 Compared to Year Ended December 31, 2009 

Net Revenue from Sales and Services 

Net revenue from sales and services increased by R$651.5 million, or 7.6%, to R$9,231.0 in 2010 from R$8,579.5 million in 2009.   

Net revenue from sales and services relating to water services increased by R$295.5 million, or 7.7%, to R$4,113.0 in 2010 from 

R$3,817.5 million in 2009.  This increase was principally due to: 

•               an average 3.8% increase in the volume of water invoiced 2010; and  

•               the effect of the 4.43% tariff increase in September 2009, and the 4.1% tariff increase in September 2010. 

Net revenue from sales and services relating to sewage services increased by R$244.5 million, or 8.4%, to R$3,157.5 million in 2010 

from R$2,913.0 million in 2009.  This increase was principally due to: 

•               an average 4.5% increase in the volume of sewage services invoiced in 2010; and 

•               the effects of the 4.43% tariff increase in September 2009 and the 4.1% tariff increase in September 2010. 

Gross revenue from construction increased by R$90.9 million, or 4.5%, to R$2,130.7 million in 2010 from R$2,039.8 million in 2009. 

Cost of Sales and Services 

The cost of sales and services increased by R$107.2 million, or 2.1%, to R$5,194.5 million in 2010 from R$5,087.3 million in 2009.  

As a percentage of net revenue from sales and services, cost of sales and services decreased to 56.3% in 2010 from 59.3% in 2009. 

The increase in costs of sales and services was principally due to the following factors: 

•               an increase of R$157.6 million, or 349.3%, in general costs on the provision of water and sewage services, of which R$167.2 
million relates to a fee to the Fund of Environmental Sanitation and Infrastructure of the municipality of São Paulo which had to 
be paid according to the terms of the agreement with the State and the city of São Paulo executed on June 23, 2010.  This fee 
represents 7.5% of the gross revenue of the São Paulo municipality as from the date of execution of the agreement; 

•               an increase of R$71.4 million in construction costs in 2010; 

•               an increase of R$51.2 million, or 9.3%, in outsourced services, mainly due to (i) the maintenance of water and sewage 

structure amounting to R$18.4 million, (ii) pavement and maintenance of side-walks amounting to R$14.2 million, and (iii) 
transportation of water and mud amounting to R$8.4 million; and 

•               an increase of R$45.8 million, or 9.5%, in the electricity expense mainly due to (i) an increase of 5.2% in the electricity tariff, 

and (ii) an increase of 1.9% in the electricity consumption. 

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The increase in costs of sales and services was partially offset by: 

•               a decrease of R$196.8 million, or 16.7%, in salaries and related charges, mainly due to (i) a R$113.5 million decrease as a 

result of the reduction in our staff pursuant to the TAC, with the State Public Attorney’s Office (Ministério Público Estadual).  
Pursuant to the TAC, we laid off retirees who were still working for us and laid off approximately 2% of our workforce; (ii) 
decrease in actuarial liability due to the migration from defined benefit plan to defined contribution plan amounting to R$79.3 
million and (iii) a decrease of R$13.6 million related to adjustment in the profit sharing program for 2010; 

•               a decrease of R$14.7 million, or 2.7%, in depreciation and amortization expenses. 

Gross Profit 

As a result of the factors discussed above, gross profit increased by R$544.3 million, or 15.6%, to R$4,036.5 million in 2010 from 
R$3,492.2 million in 2009.  As a percentage of net revenue from sales and services, gross profit increased to 43.7% in 2010 from 40.7% in 
2009. 

Selling Expenses 

Selling expenses increased by R$102.5 million, or 16.8%, to R$712.9 million in 2010 from R$610.4 million in 2009.  As a percentage 

of net revenue from sales and services, selling expenses increased to 7.7% in 2010 from 7.1% in 2009. 

The increase in selling expenses was primarily due to the following factors: 

•               an increase of R$115.1 million, or 98.1%, in the allowance for doubtful accounts related to municipal public entities; and 

•               an increase of R$11.8 million, or 5.8%, in outsourced services expenses, principally due to (i) a R$9.7 million provision related 
to future payment to the City Hall of São Paulo (Prefeitura Municipal de São Paulo), or PMSP, pursuant to the agreement we 
entered into with PMSP on June 23, 2010; (ii) R$9.4 million in billing services, mainly related to an increase in network 
connections and the utilization of new technologies, which resulted in an increase in outsourcing expenses; and (iii) R$4.7 million 
related to increase in fraud control expenses. 

The increase in selling expenses was partially offset by a R$28.2 million, or 13.3%, decrease in salaries and related charges in 2010, 
due mainly to:  (i) the reduction in our staff pursuant to the TAC, which resulted in a decrease of R$15.5 million in 2010; (ii) gain from the 
migration of employees from defined benefit plan to defined contribution plan “SabesprevMais” amounting to R$13.3 million; and (iii) 
R$13.8 million decrease resulting from the implementation of the PURA program. 

Administrative Expenses 

Administrative expenses decreased by R$63.9 million, or 8.9%, to R$653.2 million in 2010 from R$717.1 million in 2009.  As a 

percentage of net revenue from sales and services, administrative expenses decreased to 7.1% in 2010 from 8.4% in 2009. 

The decrease in administrative expenses was primarily due to: 

•               a decrease of R$96.8 million, or 36.0%, in general expenses due to a reduction in contingency provisions mainly related to 

customer claims in 2010; 

•               a decrease of R$11.5 million in termination expenses resulting from the 2009 staff reduction pursuant to the TAC; and 

•               a decrease of R$13.9 million in actuarial calculation due to the migration of employees from defined benefit plan to defined 

contribution plan “SabesprevMais.”  

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The decrease in administrative expenses was partially offset by: 

•               an increase in actuarial liability related to the payment by us on behalf of the State of São Paulo of pension plan (plan G0) 

amounting to R$31.7 million due to a decrease in the discount rate from 6.6% to 6.0%; 

•               an increase of R$19.2 million related to the deficit in defined benefit plan, paid to the employees who migrated to the defined 

contribution plan “SabesprevMais.”  

Other Operating Expenses, Net 

Other operating income, net decreased to R$1.8 million income in 2010 from R$44.4 million expenses in 2009.  The decrease was due 
to the reclassification of the expenses related to the pension plan paid by us on behalf of the State of São Paulo (plan G0), which had been 
recorded as other operating expenses, net 2009, as administrative expenses in 2010. 

Finance Cost, Net 

Finance cost, net, consists primarily of interest on our indebtedness and foreign exchange losses (or gains) in respect of our 

indebtedness, offset partially by interest income on cash and cash equivalents and inflation based indexation accruals, mainly relating to 
agreements entered into with some customers to settle overdue accounts receivable. 

Finance cost, net increased by R$369.4 million, or 3,694.0%, to R$379.4 million in 2010 from R$10.0 million in 2009.  As a 

percentage of net revenues from sales and services, finance cost, net increased to 4.1% in 2010 from 0.1% in 2009.  

The increase was principally due to: 

•               an increase in foreign exchange loss related to loans and financing of R$470.6 million as a result of the 4.3% appreciation of 
the real against the U.S. dollar in 2010, compared to an appreciation of 25.5% of the real against the U.S. dollar in 2009; 

•               an increase in interest expenses of R$91.0 million due to the issuance of (i) our tenth, eleventh and twelfth debentures in 

November 2009, March 2010 and July 2010, respectively; (ii) our fifth promissory notes in August 2010; and 

•               an increase of R$85.9 million in expenses from monetary indexation resulting mainly from the increase in the IGP-M rate of 

11.3% in 2010 compared to its decrease of 1.7% in 2009. 

The increase in finance cost, net was partially offset by: 

•               a decrease of R$158.7 million in expenses related to the adjustment for inflation of our provision for contingency due to a 

decrease in the inflation rate;  

•               an increase of R$65.2 million in financial income mainly due to (i) the renegotiation of debts with certain municipalities, 

mainly Taubaté and Ferraz de Vasconcelos, and (ii) the adjustment for inflation of court deposits; and 

•               an increase of R$59.3 million in interest and other financial income due to the increase in cash and cash equivalents. 

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Income before Income Taxes 

As a result of the factors discussed above, income before income taxes increased by R$182.5 million, or 8.6%, to R$2,292.8 million in 

2010 from R$2,110.3 million in 2009.  As a percentage of net revenue from sales and services, our income before income taxes increased 
to 24.8% in 2010 from 24.6% in 2009. 

Income Taxes 

Income taxes increased by R$59.7 million, or 9.9%, to R$662.3 million in 2010 from R$602.6 million in 2009.  The increase was 

primarily due to the increase in our income before income taxes in 2010. 

Net Income 

As a result of the factors discussed above, net income increased by R$122.8 million, or 8.1%, to R$1,630.5 million in 2010 from 

R$1,507.7 million in 2009. 

Year Ended December 31, 2009 Compared to Year Ended December 31, 2008  

Net Revenue from Sales and Services 

Net revenue from sales and services increased by R$770.2 million, or 9.9%, to R$8,579.5 million in 2009, from R$7,809.3 million in 

2008.  This increase was principally due to: 

•               an average 2.1% increase in the total volume invoiced in 2009 (an 2.1% increase in the volume of water invoiced and a 3.2% in 

the volume of sewage services invoiced); and 

•               the effect of the 5.1% tariff increase in September 2008, and the 4.4% tariff increase in September 2009. 

The increase was partially offset by: 

•               a decrease in the volume produced in the industrial segment, due to the termination or decrease in the production of certain 

industrial units and the execution of fixed demand agreements; and 

•               a decrease in the volume invoiced to both state and municipal entities, due to the incentives created by the Rational Use of 

Water Program (Programa de Uso Racional da Água) to decrease water consumption. 

Cost of Sales and Services 

The cost of sales and services increased by R$604.4 million, or 13.5%, to R$5,087.3 million in 2009, from R$4,482.9 million in 2008.  

As a percentage of net revenue from sales and services, cost of sales and services increased to 59.3% in 2009 from 57.4% in 2008. 

The increase in costs of sales and services was principally due to the following factors:   

•               an increase of R$152.1 million, or 14.8%, in payroll expenses and related charges, due to (i) annual salary adjustments of 6.7% 
that came into effect in May 2009; and (ii) an increase in TAC (a program to dismiss employees already retired, but that are still 
working for us), that comprises prior notice amount, severance payments and related charges totaling R$67.0 million; 

•               an increase of R$108.7 million, or 24.5%, in outsourced services, mainly due to an increase of (i) R$41.2 million in sewage 
and water network and connections maintenance; (ii) R$29.6 million in preventive and corrective maintenance of water and 
sewage treatment stations; (iii) R$10.4 million in a provision for expenditures that we are committed to under our agreement with 
the city of São Paulo; (iv) R$7.0 million in technical services; (v) R$6.2 million related to the rental of vehicles, which started in 
2008, in substitution of our own fleet; and (vi) R$6.1 million in treatment and transportation of sludge;  

•               an increase of R$359.2 million, or 21.8%, in construction costs, mainly due to an increase in capital expenditures of concession 

intangible assets in 2009 compared to 2008; 

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•               an increase of R$25.9 million, or 5.7%, in energy costs, principally as a consequence of an average increase of 8.5% in energy 

tariffs which was partially offset by a decrease of 1.6% in our energy consumption; and  

•               an increase of R$8.7 million, or 23.9%, in general expenses, mainly due to the payments for the municipality of São Paulo, that 

amounted R$5.1 million in 2009, and general insurance expenses of R$0.7 million. 

The increase was partially offset by: 

•               a decrease of R$60.1 million, or 10.1%, in depreciation and amortization in 2009 when compared to 2008. 

Gross Profit 

As a result of the factors discussed above, gross profit in 2009 increased by R$165.8 million, or 5.0%, to R$3,492.2 million in 2009, 

from R$3,326.4 million in 2008.  As a percentage of net revenue from sales and services, gross profit decreased to 40.7% in 2009 from 
42.6% in 2008. 

Selling Expenses 

Selling expenses in 2009 increased by R$110.7 million, or 22.2%, to R$610.4 million in 2009, from R$499.7 million in 2008.  As a 

percentage of net revenue from sales and services, selling expenses increased to 7.1% in 2009, from 6.4% in 2008. 

The increase in selling expenses was primarily due to the following factors: 

•               an increase of R$72.3 million, or 54.8%, in outsourced services expenses, principally due to (i) R$24.5 million expenses 
related to the PURA program in municipal schools, pursuant to our agreement with the city of São Paulo, (ii) an increase of 
R$19.7 million in outsourced accounts receivable collection services, resulting from an increase in our collection claims; 
(iii) R$16.4 million in a provision for future expenses that we commit to incur pursuant to our agreement with the city of São 
Paulo; and (iv) R$8.6 million in verification and billing services, resulting from the outsourcing of these services and the adoption 
of new technologies in the verification and billing processes; and 

•               an increase of R$32.6 million, or 18.2%, in payroll expenses and related charges, due to (i) annual salary adjustments of 6.69% 
that came into effect in May 2009; (ii) a R$9.1 million increase in TAC (a program to dismiss employees already retired, but that 
are still working for us), that comprises prior notice amount, severance payments and related charges. 

Administrative Expenses 

Administrative expenses for 2009 increased by R$137.1 million, or 23.6%, to R$717.1 million in 2009, from R$580.0 million in 
2008.  As a percentage of net revenue from sales and services, administrative expenses increased to 8.4% in 2009, from 7.4% in 2008. 

The increase in administrative expenses was primarily due to: 

•               a increase of R$63.5 million, or 42.7%, in payroll expenses and related charges, due to (i) annual salary adjustments of 6.69% 
that came into effect in May 2009; and (ii) a R$6.6 million increase in TAC (a program to dismiss employees already retired, but 
that are still working for us), that comprises prior notice amount, severance payments and related charges; 

•               an increase of R$41.6 million, or 36.9% in outsourced services, mainly due to (i) R$25.9 million in advertising expenses 
related to our advertising campaigns that focus on our social and environmental actions, such as Projeto Verão, Onda Limpa, 
Soluções Ambientais, PURA, among others; (ii) R$4.7 million in consulting and other services, and (iii) R$2.2 million in 
maintenance of information technology, equipment and software licenses;  

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•               an increase of R$21.2 million, or 8.5%, in general expenses, consisting in the increase of our provisions for contingencies; and  

•               an increase of R$6.5 million, or 13.3%, in tax expenses, mainly due to (i) a R$3.1 million expense related to the Imposto sobre 
a Propriedade Predial e Territorial Urbana (IPTU), a tax on properties; and (ii) a R$3.2 million expense paid to ARSESP, the 
regulatory agency. 

Other Operating Expenses, Net 

Other operating expenses, net, for 2009 decreased by R$81.1 million, or 64.6%, to R$44.4 million in 2009 from R$125.5 million in 
2008.  The decrease is primarily due to an expense recorded in 2008 amounting to R$137.1 million related to a write-off of property, plan 
and equipment and concession intangible assets after the negotiation of the third amendment with the State Government of São Paulo.  

Finance Cost, Net 

Finance cost, net consist primarily of interest on our indebtedness, foreign exchange losses (or gains) in respect of our indebtedness, 

offset partially by interest income on cash and cash equivalents and inflation-based indexation accruals, mainly relating to agreements 
entered into with some customers to settle overdue accounts receivable. 

Finance cost, net in 2009 decreased by R$963.0 million, or 99.0%, to R$10.0 million, from R$973.0 million in 2008. 

The decrease was mainly due to: 

•               a change of R$967.3 million caused by the foreign exchange variation, from a foreign exchange expense of R$438.9 million in 
2008 to a foreign exchange income of R$528.4 million in 2009, especially due to the 25.5% depreciation of the U.S. dollar against 
the real in 2009, compared to the 31.9% appreciation of the U.S. dollar against the real in 2008; 

•               a decrease of R$126.6 million in monetary indexation expenses on loans and financing, that was primarily attributable to (i) a 

decrease of R$105.6 in monetary indexation expenses caused by the 1.71% negative variation of the IGP-M in 2009, compared to 
a 9.81% positive variation in 2008; (ii) a decrease of R$20.9 million in monetary indexation expenses caused by the decrease of 
the TR, to 0.71% in 2009 from 1.63% in 2008; 

•               a decrease of R$95.0 million in interest and other charges related to our real-denominated indebtedness, mainly due to the 

payments we made and the related decrease in the outstanding balance of our indebtedness;  

•               an increase of R$13.5 million, or 8.9%, in the remuneration of our financial investments, interest income and other financial 

revenues; and  

•               the settlement of US$98 million Eurobonds in June 2008, with a R$9.9 million variation. 

The decrease in the finance cost, net was partially offset by: 

•               a R$95.2 million decrease in the income from monetary indexation, especially due to the R$82.5 million update of the 
undisputed amount regarding the reimbursement of supplemental retirement and pension benefits in accordance with the 
agreement with the State and the DAEE made in 2008 and not recurrent in 2009; 

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•               an increase of R$87.5 million in the financial expenses related mainly to interest and monetary indexation of provision for 

contingencies; and  

•               an increase of R$64.0 million in other financial expenses, mainly due to (i) adjustment in the interest calculations regarding the 
Special Program for Payment of Federal and Social Security-Related Taxes in Installments (Programa de Parcelamento Especial 
para Impostos Federais e Previdenciários), or PAES program, as set forth by Law No. 10,684, dated May 30, 2003, totaling 
R$58.7 million in 2008; and (ii) financial expenses related to commitments made to the municipalities in order to formalize the 
concession agreements, amounting R$15.8 million. 

Income before Income Taxes 

As a result of the factors discussed above, income before income taxes in 2009 increased by R$962.1 million, or 83.8%, to 

R$2,110.3 million, from R$1,148.2 million in 2008.  As a percentage of net revenue from sales and services, our income before income 
taxes increased to 24.6% in 2009, from 14.7% in 2008. 

Income Taxes  

Income taxes in 2009 increased by R$317.3 million, or 111.2%, to R$602.6 million in 2009 from R$285.3 million in 2008.  This 

increase was primarily due to the increase of our income before income taxes in 2009. 

Net Income 

As a result of the factors discussed above, net income increased by R$644.8 million, or 74.7%, to R$1,507.7 million in 2009, from 

R$862.9 million in 2008.  Net income margin increased to 17.6% in 2009 from 11.0% in 2008. 

B.    Liquidity and Capital Resources 

Capital Sources 

In order to satisfy our liquidity and capital requirements, we have primarily relied on cash provided by operating activities, borrowings 

from Brazilian federal and state governmental financial institutions, and financing from multilateral organizations and from domestic and 
international capital markets.  As of December 31, 2010, we had R$1,989.2 million of cash and cash equivalents.  Outstanding short-term 
indebtedness was R$1,242.1 million as of December 31, 2010, of which R$130.0 million was denominated in foreign currency.  Long-term 
indebtedness was R$7,022.5 million as of December 31, 2010, of which R$2,119.0 million consisted of foreign currency-denominated 
obligations.  We believe that we have sufficient sources of liquidity and capital to meet our liquidity and capital requirements for the next 
few years, in light of our current financial position and our expected cash generated by operating activities. 

Cash Provided by Operating Activities 

Cash provided by operating activities is the single largest source of our liquidity and capital resources, and we anticipate that it will 
continue to be so in the future.  Our cash generated by operating activities was R$2,072.5 million and R$2,083.0 million in 2009 and 2010, 
respectively. 

We have overdue accounts receivable from the State and from the municipalities to which we provide water on a wholesale basis.  For 

more information, see “Item 7.B. Related Party Transactions.” 

Indebtedness Financing 

As of December 31, 2010, we had R$7,022.5 million in long-term indebtedness outstanding (excluding the current portion of long-
term indebtedness), of which R$2,119.0 million consisted of foreign currency-denominated long-term debt.  We had outstanding short-term 
indebtedness of R$1,242.1 million as of December 31, 2010, representing the current portion of our long-term indebtedness.  As of 
December 31, 2010, R$130.0 million of this short-term indebtedness was denominated in foreign currency.  As of November 29, 2010, our 
Standard & Poor’s Rating Service domestic rating was braAA- and our S&P international rating was BB.  As of January 27, 2011, our 
Fitch Ratings domestic rating was A+(bra) and our Fich Ratings international rating was BB.  We expect these ratings to remain stable 
throughout 2011.  

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Various contractual agreements we have entered into, including certain financing agreements with Caixa Econômica Federal and the 
BNDES, provide for liens over a portion of our cash flows from operations.  In addition to Caixa Econômica Federal and the BNDES, we 
have granted liens over a portion of our cash flows deriving from our operations in connection with agreements relating to securitization 
transactions, the Alto Tietê PPP and arrangements relating to the lease of certain assets.  Pursuant to these agreements, cash received from 
operations is required to pass through designated accounts.  In the event of a default under the relevant agreement, such cash and future 
cash flows that are required to be deposited in such accounts become restricted and are subject to security interests in favor of the relevant 
creditor.  As of December 31, 2010, a substantial portion of our monthly cash flows from operations was subject to these liens.  As of that 
date, the total amount of our secured debt, including indebtedness benefiting from these liens, was R$2,161.0 million. 

The following table sets forth information on our indebtedness outstanding as of December 31, 2010: 

Table of Contents

Facility 

Real-denominated loans and financings: 
Federal Government/Banco do Brasil 
Debentures Eighth Issuance 
Debentures Ninth Issuance 

Debentures Tenth Issuance 

Debentures Eleventh Issuance 

Debentures Twelfth Issuance 
Caixa Econômica Federal(2) 
Promissory notes 
FIDC – SABESP 1 
BNDES 
BNDES (South coast area) 
BNDES (PAC) 
BNDES (Clean Wave Program) 
Foz do Brasil – Mutual 
Banco Santander 
Other 
Accrued interest 

Foreign currency denominated loans and financings: 

Inter-American Development Bank 
Eurobonds US$140.0 million 
Eurobonds US$350.0 million 
JICA Yen 21.3 billion 
IADB AB Loan Financing US$250 million           
Accrued interest 

As of December 31, 2010 

Total 
Aggregate 
Principal 
Amount 

Current 

Long Term 
(in millions of reais)  

Final 
Maturity 

Interest Rate(1) 

316.5 
465.1 
33.3 

- 

- 

- 
91.0 
- 
13.9 
43.4 
- 
1.7 
- 
- 
2.4 
2.8 
142.0 
1,112.1 

818.4 
- 
198.2 

279.5 

1,134.9 
465.1 
231.6 

279.5 

1,205.5 

1,205.5 

2014  8.50% plus UPR  
2011  10.75%  plus IGP-M 
2015  CDI plus 2.75% (1st series) and 12.87% 

plus IPCA (2nd series) 

2020  TJLP plus 1.92% (1st and 3rd series) 

and 9.53% plus IPCA (2nd series) 
2015  CDI(3) plus 1.95% (1st series) and CDI 

499.7 
783.4 
599.8 
- 
40.5 
130.5 
44.3 
247.0 
52.9 
- 
3.9 
- 
4,093.6 

499.7 
874.4 
599.8 
13.9 
83.9 
130.5 
46.0 
247.0 
52.9 
2.4 
6.7 
142.0 
6,015.7 

plus 1.4% (2nd series) 

2025  TR plus 9.5% 
2010/2032  5.0% to 9.5% plus UPR 
2011  CDI plus 0.65% 
2011  CDI plus 0.70%  
2013  3% plus TJLP (limited to 6.00%) 
2019  2.5% plus TJLP (limited to 6.00%) 
2023  2.15% plus TJLP (limited to 6.00%)  
2025  1.92% plus TJLP (limited to 6.0%) 
2012  CDI plus 1.75% plus IOF 
2011  CDI 

2011/2018  12.00%, CDI and TJLP plus 6.00% 

63.2 
- 
- 
11.8 
39.9 
15.1 
130.0 
1,242.1 

511.5 
232.6 
576.1 
425.2 
373.6 
- 
2,118.9 
7,022.5 

574.7 
232.6 
576.1 
437.0 
413.5 
15.1 
2,248.9 
8,264.6 

2016/2034  3.00% to 3.52% plus currency basket 

fluctuation plus U.S. dollar 

2016  7.50% 
2020  6.30% 
2029  1.8% and 2.5% 
2023  2.4% to 2.99% 

Total Debt 
______________ 
(1)   UPR stands for Standard Reference Unit (Unidade Padrão Referência) and is equal to the TR, which was 0.14% per month as of December 31, 2010; CDI stands for 
Interbank Deposit Rate (Certificado de Depósitos Interbancários), which was 10.64% per annum as of December 31, 2010; IGP-M was 11.32% per annum as of 
December 31, 2010; TJLP stands for Long-term Interest Rate (Taxa de Juros a Longo Prazo),  published quarterly by the Central Bank, which was 6.0% per annum as of 
December 31, 2010. 

(2)   This line item represents the aggregate amount outstanding under financing agreements we have entered into with Caixa Econômica Federal, which mature on different 
dates and bear different interest rates.  The numbers above reflect the range of maturities and the weighted average interest rate under these agreements. 

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The following table shows the maturity profile of our debt, as of December 31, 2010, for the period indicated: 

Loans and financing 

2011 

2012 

2013 

2014 

2015 

2016 

After 
2017 

Total 

1,242.1

1,533.0

1,229.5

699.5

601.3

520.6

2,438.6

8,264.6

Substantially all of our foreign currency-denominated indebtedness of R$1,809.9 million as of December 31, 2010 was denominated in 

U.S. dollars or in baskets of foreign currencies.  This indebtedness consisted principally of: 

•               R$579.2 million (US$344.9 million) in U.S. dollar denominated loans contracted with the Inter-American Development Bank, 
or the IADB to finance the first phase of the Tietê Project in 1992 and its second phase in 2000.  Under these loans, payments of 
principal are made in semi-annual installments with final maturity in July 2025.  The principal amount is adjusted semi-annually 
for the variation in a basket of foreign currencies U.S. dollar, and accrues interest at a rate varying from 3.00% to 3.52% plus 
LIBOR.  We have pledged as collateral part of our receivables from our sales and services up to the amount due.  For further 
information on the terms of these loan agreements, see “Item 4.A. History and Development of the Company—Capital 
Expenditure Program—Main Projects of Our Capital Expenditure Program—Metropolitan System Investment Program—Tietê 
Project”; 

•               R$416.9 million (US$250.0 million) in U.S. dollar denominated loans from the AB Loan financing contracted with the IADB 
in June 2008.  Under this loan, payments of principal are made in annual installments with final maturity in May 2023.  The 
principal amount is adjusted semi-annually for the LIBOR plus spread and accrued interest at a rate varying from 2.4% to 2.99%.  
This loan was used to repay an outstanding series of debt securities in connection with the implementation of our investment plan; 
and 

•               R$813.8 (US$490.0 million) in U.S. dollar denominated loans from Eurobonds contracted in November 2006 (US$140.0 

million) and in December 2010 (US$350.0 million).  Under this loan, payments of interest are made in semi-annual installments 
and principal will be paid in the end of the contract with final maturities in 2016 and 2020.  The principal amount is adjusted 
semi-annually for LIBOR plus spread and accrued interest at a rate varying from 6.3% to 7.5%. 

Our borrowings from multilateral institutions, such as the IADB and IBRD, have in the past been, and in the future are likely to be, 
guaranteed by the State or the federal government.  We do not pay fees for these guarantees.  Under some of the loan agreements with the 
IADB, we have granted a guarantee (contra garantia) to the federal government.  In September 2010, we executed an agreement with the 
IADB to finance the third phase of the Tietê Project.  The loan amounts to US$600 million, matures on September 3, 2035.  Amortizations 
will be made in semi-annual installments after a grace period of six years.  The principal amount accrues interest at the USD LIBOR.   

We entered into a credit agreement on August 6, 2004 with the JBIC (today JICA) for the financing of the environmental recovery 
program for the Baixada Santista metropolitan region, called the Clean Wave Program (Programa Onda Limpa), which was guaranteed by 
the federal government for an aggregate principal amount of ¥21,316.0 million.  As of December 31, 2010, the total amount outstanding 
was R$439.1 million.  Under this financing agreement, amortizations are made in semi-annual installments in August and February, with 
final maturity in 2029.  This obligation is guaranteed by the federal government.  For further information on the terms and guarantees of 
this financing agreement, see “Item 7.B. Related Party Transactions—Government Guarantees of Financing” and “Item 4.A. History and 
Development of the Company—Capital Expenditure Program—Main Projects of Our Capital Expenditure Program—Metropolitan System 
Investment Program—Clean Wave Program”.  In October 2010, we executed an agreement with JICA to finance the environmental 
improvement program in the basin of the Billings dam, part of the New Life Program (Programa Vida Nova).  The loan amounts to ¥6,208 
billion and matures on October 20, 2035.   

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Amortizations will be made in semi-annual installments after a grace period of seven years, starting on October 20, 2017.  The 

principal amount accrues interest at a rate of 1.2% per year related to civil work and 0.01% per year related to consulting.  As of the date of 
this annual report, no disbursement had been made under this agreement.  In addition, in February 2011, we entered into a credit agreement 
with JICA to obtain additional financing for the first stage of the Clean Wave Program (Programa Onda Limpa) in the amount of ¥19,169 
billion (approximately US$220 million).  These funds will be used for the provision of works and services in the Baixada Santista 
metropolitan region.  The credit agreement expires in 18 years and interest varies from 1.8% to 2.5% per year. 

Our outstanding domestic debt was R$6,015.7 million as of December 31, 2010 and consisted primarily of real-denominated loans 
from federal and state-owned banks, in particular, Banco do Brasil S.A., Caixa Econômica Federal and the BNDES, as well as debentures 
issued in June 2005, October 2008, November 2009, April 2010 and June 2010, and promissory notes issued in August 2010. 

The following summarizes our principal borrowings from federal and State-owned banks: 

•               in March 1994, we entered into a loan agreement with Banco do Brasil S.A., or Banco do Brasil, in the amount of R$2.3 

billion.  Amortizations of the principal amount are made in 240 successive monthly installments, with final maturity in 2014.  The 
principal amount accrues interest at the daily government interest rate plus 8.50% per annum and monetary adjustment; 

•               from 1996 to 2009, we have entered into several line of credit agreements with Caixa Econômica Federal, pursuant to which 
amortizations of principal are paid in 180 or 240 months in monthly installments commencing 30 days following the applicable 
grace period, which varies from 14 to 48 months from the date of signature of the line of credit agreement.  The final maturity is 
2032.  The principal amount accrues interest from 5.0% to 9.5%.  The lines of credit are collateralized by (i) collections of daily 
billings of water supply and sewage services up to the total amount of the debt, or (ii) by a monthly plan of billings corresponding 
to the minimum of three times the monthly charge, depending on the terms of the relevant line of credit agreement; 

•               in August 2002, we entered into a line of credit agreement with the BNDES.  The final maturity date is February 2013.  The 
principal amount accrues interest at the long-term rate fixed by the TJLP but limited to 6.0%, plus 3.0% per annum.  If the TJLP 
exceeds 6.0%, such excess will be added to the principal amount payable at maturity.  The line of credit agreement is 
collateralized by part of the billings from the provision of water and sewage services; 

•               in November 2007, we entered into a R$129.9 million credit agreement with the BNDES.  Amortizations of the principal 

amount will be made in 96 successive monthly installments, with final maturity in 2019.  The principal amount accrues interest at 
the TJLP, but limited to 6.0%, plus 2.50% per annum.  If the TJLP exceeds 6.0%, such excess will be added to the principal 
amount.  The credit agreement is collateralized by part of the billings from the provision of water and sewage services; 

•               in May 2008, we entered into a R$174.0 million financing agreement with the BNDES.  Amortizations of the principal amount 
will be made in 150 successive monthly installments, with final maturity in 2023.  The principal amount accrues interest at the 
TJLP, but limited to 6.0%, plus 2.15% per annum.  If the TJLP exceeds 6.0% per annum, such excess will be added to the 
principal amount.  The financing agreement is collateralized by part of the billings from the provision of water and sewage 
services; and 

•               in March 2010, we entered into a R$294.3 million financing agreement with the BNDES.  Amortizations of the principal 

amount will be made in 156 successive monthly installments commencing 30 days after the 24-month grace period, with final 
maturity in 2025.  The principal amount accrues interest at the TJLP, but limited to 6.0%, plus 1.92% per annum.  If the TJLP 
exceeds 6.0%, such excess will be added to the principal amount.  The financing agreement is collateralized by part of the billings 
from the provision of water and sewage services. 

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In June 2005, we issued R$700.0 million in aggregate principal amount of debentures offered in two series.  The debentures of the first 

series matured in June 2009 and the second series will mature in June 2011. The debentures of the first series, in the aggregate principal 
amount of R$350.0 million, bore interest at the CDI plus 1.5% per year, and the debentures of the second series, in the aggregate principal 
amount of R$350.0 million, bear interest at the rate of IGP-M index plus 10.75% per year. 

As part of the shelf program with the CVM, we issued R$220.0 million in aggregate principal amount of debentures in October 2008 

(our ninth issuance), offered in two series.  The debentures of the first and second series will mature in October 2013 and 2015, 
respectively.  The debentures of the first series, in the aggregate principal amount of R$100.0 million, bear interest at the CDI plus 2.75% 
per year, and the debentures of the second series, in the aggregate principal amount of R$120.0 million, bear interest at the rate of the IPCA 
index plus 12.87% per year. 

Under the BNDES program, in the amount of R$826.1 million, we issued the first of three tranches of debentures.  In November 2009, 

we issued our tenth debentures in the aggregate principal amount of R$275.4 million.  The debentures are divided in three series: the first 
and second series will mature in November 2020 and the third in December 2020.  The debentures of the first and third series, in the 
aggregate principal amount of R$77.1 million and R$115.7 million, respectively, bear interest at 1.92% per year, plus the TJLP.  If the 
TJLP exceeds 6.0%, such excess will be capitalized the 15th day of each month that such debentures are outstanding.  The debentures of 
the second series, in the aggregate principal amount of R$82.6 million, bear interest at the rate of the IPCA index plus 9.53% per year.  Our 
tenth issuance was entirely subscribed by the BNDES.  We will use the funds raised from this tenth issuance for investments primarily in 
the Corporate Program for Water Loss Reduction and on improvements and reforms of the Rio Grande’s water treatment plant, including 
other projects for water supply and sewage collection systems in the São Paulo Northern Coast, Paraíba Valley and Mantiqueira Regions. 

In April 2010, we issued in two series our eleventh issuance of debentures in the aggregate principal amount of R$1,215.0 million.  
The first and second series will mature in March 2015 and 2013, respectively.  The debentures of the first series, in the aggregate principal 
amount of R$810.0 million, bear interest at the CDI plus 1.95% per year, and the second series, in the aggregate principal amount of 
R$405.0 million, bear interest at the CDI plus 1.45% per year.  The net proceeds from our eleventh issuance of debentures were partially 
used to redeem the promissory notes issued in December 2009.  The remaining portion was used for general corporate purposes. 

In June 2010, we issued 500,000 debentures to the Government Severance Indemnity Fund for Employees (Fundo de Garantia por 
Tempo de Serviço), or FGTS, based on the FGTS’s program to finance companies in the sanitation, transport and real estate businesses (our 
twelfth issuance).  The proceeds will be released in three tranches within a six-month period each, totaling R$500.0 million in the 
aggregate, of which R$335 million was already released to us.  The debentures will bear interest based on the TR plus 9.5% per year.  The 
debentures will mature in June 2025.  The debentures have a grace period of four years in respect of payments, and we have an option to 
redeem the debentures as from July 2014. We intend to use the proceeds from the twelfth issuance to fund a portion of our capital 
expenditure program in the water supply and sewage systems. 

In January 2011, we issued in a single series our thirteenth debentures in the aggregate principal amount of R$600.0 million.  The 
debentures will mature in August 2012 and bear interest, paid semi-annually, at the CDI rate plus 0.95% per year.  The proceeds were used 
to redeem the promissory notes issued in August 2010.  

All of our real-denominated indebtedness is indexed to take into account the effects of inflation.  Most of our real-denominated debt 

provides for inflation-based increases in their respective principal amounts; the increases are determined by reference to the TR plus an 
agreed margin. 

In March 2011, our securitization fund (Fundo de Investimentos Creditórios) created in 2006 in the amount of R$250 million expired.  

In addition, on June 1, 2011 the second series of our eighth issuance of debentures was paid in the amount of R$465.0 million. 

In December 2010, we issued US$350.0 million aggregate principal amount of 6.250% senior unsecured notes due 2020.  Interest on 

the notes will accrue from December 16, 2010 at a rate of 6.250% per year and will be payable semi-annually in arrears on June 16 and 
December 16, commencing on June 16, 2011.  The notes will mature on December 16, 2020.  The proceeds from the offering will be used 
to repay financial commitments throughout 2011. 

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Financial Covenants 

We are subject to financial covenants under the agreements evidencing or governing our outstanding indebtedness. 

Foreign currency denominated indebtedness 

With respect to our indebtedness denominated in U.S. dollars or in baskets of foreign currencies, we are subject to financial covenants, 

including but not limited to those set forth in the loan agreements entered into with the IADB.  Each of these agreements contains, among 
other provisions, limitations on our ability to incur debt.  

The indenture relating to our US$140.0 million 7.5% notes due 2016 is the most stringent of these debt agreements. The indenture 
prohibits, subject to some exceptions, the incurrence of additional debt in the event that: (i) the ratio of Adjusted Total Debt to Adjusted 
EBITDA (as defined in the related indenture) is greater than 3.65x; or (ii) the Debt Service Coverage Ratio (as defined in the indenture) is 
less than 2.35x. 

We do not believe that these covenants will impose constraints on our ability to finance our capital expenditure program or, more 

generally, to develop our business and enhance our financial performance. 

Local currency denominated indebtedness 

With respect to our outstanding indebtedness denominated in reais, we have entered into several credit agreements with the BNDES 

that requires us to maintain the following ratios: 

Our credit agreements with the BNDES dated August 2002 and November 2007 require us to maintain: (i) an EBITDA/net operational 

income ratio equal to or higher than 38%; (ii) an asset/short-term liability (excluding the short-term portion of long-term liabilities) ratio 
higher than 1.0x; (iii) total connections (water and sewage)/employees ratio equal to or higher than 520; (iv) EBITDA/debt service equal to 
or higher than 1.5x; and (v) a shareholders’ equity/total debt ratio equal to or higher than 0.8x. 

Our credit agreement with the BNDES dated May 2008 requires us to maintain: (i) an EBITDA/net operational income ratio equal to 

or higher than 38%; (ii) an EBITDA/financial costs ratio equal to or higher than 2.35x; and (iii) a net bank debt/EBITDA equal to or higher 
than 3.2x. 

Our credit agreement with the BNDES dated March 2010 requires us to maintain: (i) an EBITDA/net operational income ratio equal to 

or higher than 38%; (ii) an EBITDA/financial costs ratio equal to or higher than 2.35x; and (iii) net bank debt/EBITDA equal to or higher 
than 3.65%. 

In addition, our BNDES financings have the following financial covenants: (i) EBITDA/net operational income ratio equal to or higher 

than 38%; and (ii) shareholders’ equity/total debt ratio equal to or higher than 0.8x. 

Pursuant to the terms of our credit agreements with the BNDES, the financial ratios mentioned above must be calculated based on our 

year end audited financial statements. 

Although we have been presenting our financial information in our annual reports on Form 20-F in accordance with IFRS since fiscal 

year ended December 31, 2008, our Brazilian financial information was presented under Brazilian GAAP for fiscal years through 
December 31, 2009.  Accordingly, compliance with the financial ratios mentioned above was calculated under Brazilian GAAP.  Brazilian 
Corporate Law was recently amended to facilitate the convergence of Brazilian GAAP with IFRS, and thereafter the Accounting 
Pronouncement Committee (Comitê de Pronunciamentos Contábeis) issued several new accounting standards that progressively adapted 
Brazilian GAAP to IFRS (the new Brazilian GAAP).  Beginning with the fiscal year ended December 31, 2010, all Brazilian publicly held 
companies, such as us, must report under the new Brazilian GAAP.  Due to the impact of this change, we requested a temporary waiver 
from BNDES suspending compliance with these financial covenants in order to allow us to analyze the impact of the new Brazilian GAAP 
on our ability to comply with the financial ratios.  BNDES granted the waiver on December 28, 2010, suspending compliance for 13 
months beginning with December 2010. 

In addition, all of our financing agreements with the Caixa Econômica Federal and most of our financing agreements with the BNDES 
are subject to a Performance Improvement Agreement (Acordo de Melhoria de Desempenho).  The Performance Improvement Agreement, 
dated May 28, 2007, as amended, was entered into between us and the Federal government, and the Caixa Econômica Federal and the 
BNDES as intervening parties.  Pursuant to this agreement, we must comply with eight financial and operating ratios during the next five 
years.  If we fail to comply with any of these ratios, the Caixa Econômica Federal and the BNDES may suspend our credit lines and we 
will be prevented from entering into any other financing agreements with those entities.  We have the ability, however, to renegotiate the 
ratios during the five-year period if needed.   

Our financing agreement with the federal government and Banco do Brasil S.A. and our credit agreements with Caixa Econômica 

Federal do not contain material financial covenants. 

With respect to our outstanding debentures, the eighth, ninth, eleventh and twelfth issuances require us to maintain a current debt ratio 

(current assets divided by current liabilities, excluding the current portion of long-term indebtedness) higher than 1.0x and an 
EBITDA/financial expenditures ratio equal to or higher than 1.5x. 

The tenth issuance requires us to maintain (i) an EBITDA/net operational revenue ratio equal to or higher than 38 percent; (ii) an 
EBITDA/financial expenditures ratio equal to or higher than 2.35x; and (iii) a net bank debt/EBITDA ratio equal to or higher than 3.65x. 

The thirteenth issuance requires us to maintain (i) an EBITDA/financial expenditures ratio equal to or higher than 1.5% and (ii) a net 

  
debt/EBITDA ratio equal to or higher than 3.65%. 

As of the date of this annual report we were in compliance with all the financial ratios that are currently applicable to us. 

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Capital Requirements 

We have, and expect to continue to have, substantial liquidity and capital resource requirements.  These requirements include debt-
service obligations, capital expenditures to maintain, improve and expand our water and sewage systems, and dividend payments and other 
distributions to our shareholders, including the State. 

Capital Expenditures 

Historically, we have funded and plan to continue funding our capital expenditures with funds generated by operations and with long-

term financing from international and national multilateral agencies and development banks.  We generally include in our capital 
expenditure program for the following year the amount of investment that was not realized in the previous year.  In 2010, we recorded 
R$2.2 billion under our capital expenditure program.  We have budgeted investments in the amount of approximately R$5 billion from 
2011 through 2013. 

Dividend Distributions 

We are required by our bylaws to make dividend distributions, which can be made as payments of interest on shareholders’ equity to 
our shareholders in an amount equal to or higher than 25% of the amounts available for distribution.  We made aggregate distributions of 
R$296.2 million, R$394.2 million and R$456.0 million in 2008, 2009 and 2010, respectively. 

On June 25, 2010, we paid R$198.1 million as dividends to the State.  We are currently unable to determine the amount, if any, of the 
remaining portion of these declared dividends that the State will apply to the current and future accounts receivable owed to us by the State 
or its controlled entities.  See “Item 7.B. Related Party Transactions—Dividends.” 

Market Risk 

We are exposed to various market risks, in particular, foreign currency risk and interest rate risk.  We are exposed to foreign currency 

risk because a substantial portion of our financial indebtedness is denominated in foreign currencies, primarily the U.S. dollar, while we 
generate all of our net operating revenues in reais.  Similarly we are subject to interest rate risk based upon changes in interest rates, which 
affect our net financial expenses.  For further information on our market risks, see Note 3.1 to our consolidated financial statements as of 
and for the years ended December 31, 2010 and 2009 included elsewhere in this annual report. 

Exchange Rate Risk 

As of December 31, 2008, 2009 and 2010, R$2,280.1 million, R$1,745.6 million and R$2,248.9 million, or 33.2%, 26.6% and 27.2%, 
respectively, of our debt obligations were denominated in foreign currencies (including debt pegged to baskets of foreign currencies).  The 
basket of foreign currency-pegged debt consists primarily of our debt with the IADB.  As a result, we are exposed to exchange rate risks 
that may adversely affect our financial condition and results of operations, as well as our ability to meet debt service obligations. 

Exchange Rate Sensitivity 

We estimate that the potential loss to us in connection with U.S. dollar-denominated debt that would have resulted as of December 31, 
2008, 2009 and 2010 from each hypothetical instantaneous and unfavorable 1% change in the U.S. dollar against the real  would have been 
approximately R$22.8 million, R$17.5 million and R$22.5 million, respectively.  Consistent with these estimates, a hypothetical 
instantaneous and unfavorable 10% change in this exchange rate would have resulted in losses of approximately R$228.1 million, R$174.6 
million and R$224.9 million as of December 31, 2008, 2009 and 2010, respectively.  These estimates do not take into account that the 
changes in exchange rates comprising the baskets of foreign currencies often present variations different from the devaluation of the real in 
relation to the U.S. dollar.  

83 

  
  
The fluctuation of the real  in relation to the U.S. dollar and with the IADB and IBRD basket of currencies, for the years ended 

December 31, 2008, 2009 and 2010 were as follows: 

Table of Contents

Devaluation (appreciation) of the real in relation to the U.S. dollar 

IADB basket of currencies 

We have not utilized derivative financial instruments. 

2008 

Year ended December 31, 
2009 
(in percentages) 

2010 

31.9 

6.1 

(25.49) 

0.032 

(4.3) 

4.3 

As of December 31, 2008, 2009 and 2010, we had no short-term indebtedness outstanding, other than the current portion of long-term 

debt. 

Interest Rate Risk 

As of December 31, 2008, 2009 and 2010, R$2,320.0 million, or 33.8%, R$2,193.1 million, or 33.4%, and R$2,529.4 million, or 
30.6%, respectively, of our total debt outstanding balance denominated in reais was based on variable rates of interest based on the UPR, 
which is equivalent to the TR.  In addition, as of December 31, 2008, 2009 and 2010, R$864.0 million, or 12.6%, R$1,132.4 million, or 
17.3%, and R$2,064.7 million, or 25.0%, respectively, of our total debt denominated in reais  was subject to interest rates based on the 
CDI.  As of December 31, 2008, 2009 and 2010, R$973.6 million, R$659.4 million and R$579.2 million, respectively, of our foreign-
currency denominated debt was based on the IADB and the IBRD variable rates of interest, which are determined based on the cost of 
funding of these multilateral organizations in each period. 

As of December 31, 2008, 2009 and 2010, we did not have any derivative contracts outstanding which limited exposure to changes in 

the UPR or the CDI or in the IADB or IBRD variable rates.  However, we are obliged by law to invest our excess cash with financial 
institutions controlled by the Brazilian government.  We invest these excess funds, which totaled R$544.0 million, R$671.1 million and 
R$1,852.6 million as of December 31, 2008, 2009 and 2010, respectively, mainly in short-term instruments.  As a result, our exposure to 
Brazilian interest rate risk is partially limited by our real-denominated floating interest time deposits investments, which generally earn 
interest based on the CDI.  In addition to our exposure with respect to existing indebtedness, we may become exposed to interest rate 
volatility with respect to indebtedness incurred in the future. 

We estimate that we would have suffered a loss over periods of one year, respectively, of up to R$68.7 million, R$65.6 million and 

R$82.6 million if a hypothetical instantaneous and unfavorable change of 100 basis points in the interest rates applicable to financial 
liabilities as of December 31, 2008, 2009 and 2010, respectively, had occurred.  Consistent with these estimates, a hypothetical 
instantaneous and unfavorable 100 basis points change in these interest rates would have resulted in losses of approximately R$686.1 
million, R$655.8 million and R$826.5 million as of December 31, 2008, 2009 and 2010, respectively.  This sensitivity analysis is based on 
the assumption of an unfavorable 100 basis point movement of the interest rates applicable to each homogeneous category of financial 
liabilities and sustained over a period of one year or nine months, as applicable, and that such movement may or may not affect interest 
rates applicable to any other homogenous category of financial liabilities. 

A homogeneous category is defined according to the currency in which financial liabilities are denominated and assumes the same 
interest rate movement within each homogeneous category (i.e., U.S. dollars).  As a result, our interest rate risk sensitivity model may 
overstate the effect of interest rate fluctuation on these financial instruments, as consistently unfavorable movements of all interest rates are 
unlikely. 

The tables below provide information about our interest rate-sensitive instruments.  For variable interest rate debt, the rate presented is 
the weighted average rate calculated as of December 31, 2010.  For the foreign currency denominated obligations, these amounts have been 
converted at the selling rates as of December 31, 2010 and do not represent amounts which may actually be payable with respect to such 
obligations on the dates indicated. 

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Assets 
Cash equivalents denominated in reais  

Total assets 

Liabilities 
Long-term debt 
Floating rate, denominated in reais 
indexed by TR or UPR 
Floating rate, denominated in reais 
indexed by TJLP 
Floating rate, denominated in reais 
indexed by IGP-M 
Floating rate, denominated in reais 
indexed by IPCA 
Floating rate, denominated in reais 
indexed by CDI 
Floating rate, denominated in U.S. 
dollars 
Fixed rate, denominated in Yen 
Fixed rate, denominated in U.S. dollars 
Total long-term debt 

2011 

1,853.2 
1,853.2 

424.2 

49.4 

493.4 

3.9 

140.9 

106.4 
16.2 
7.4 
1,242.1 

As of December 31, 2010 

Expected maturity date 

2012 

2013 
(in millions, except percentages) 

After 2014 

Table of Contents

Total 

Average 
annual 
interest rate 

- 
- 

- 
- 

- 
- 

1,853.2 
1,853.2 

447.1 

73.0 

- 

- 

886.5 

98.1 
23.6 
4.6 
1,533.0 

479.0 

67.3 

- 

55.1 

501.7 

98.1 
23.6 
4.6 
1,229.5 

1,179.1 

514.0 

- 

165.0 

535.6 

665.7 
378.0 
822.6 
4,260.0 

2,529.4 

703.7 

493.4 

224.0 

2,064.7 

968.3 
441.4 
839.2 
8,264.6 

9.0% 

2.4% 

12.5% 

18.1% 

12.3% 

3.1% 
0.9% 
1.4% 
7.9% 

The percentage of our indebtedness subject to fixed and floating interest rate is as follows: 

Floating rate debt: 
Denominated in U.S. dollars 
Denominated in reais 

Fixed rate debt: 
Denominated in Yen 
Denominated in U.S. dollars 
Total 

2008 

As of December 31, 
2009 

2010 

21.9% 
66.8% 

5.7% 
5.6% 
100.0% 

16.1% 
73.4% 

6.2% 
4.3% 
100.0% 

11.7% 
72.8% 

5.3% 
10.2% 
100.0% 

C.    Research and Development, Patents and Licenses, Etc. 

Our policy is to invest continually in the modernization of equipment and in the technology needed to identify, evaluate and improve 
our provision of basic sanitation services while promoting environmental protection and maintaining our competitiveness and profitability.  
Our research and development activity is divided into committees according to strategy and complexity.  In 2008, 2009 and 2010, we 
invested R$3.5 million, R$3.8 million and R$3.8 million, respectively, in research and development.   

In order to further develop our expansion plans, we created a new division for research, technology development and innovation in 
May 2010.  Among other initiatives, the new division is responsible for:  monitoring technological trends, defining our research projects 
portfolio, obtaining funding from development agencies, developing an intellectual property protection policy and establishing cooperation 
agreements for the development of researches that are of our interest.  The new division will also enable us to increase the quality of our 
procedural processes and technology portfolio. 

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With respect to our partnership with the State of São Paulo Research Foundation (Fundação de Amparo à Pesquisa do Estado de São 
Paulo), or the FAPESP, to develop and support research projects involving researchers from graduate schools, the State of São Paulo and 
our employees, in 2010 we approved 12 projects related to:  (i) the development of technology related to the use of filtering membranes in 
water and sewage treatment, (ii) alternatives for the treatment, mud disposal and use in water and sewage treatment stations, (iii) new 
technologies for the implementation, operation and maintenance of water distribution and sewage collection systems, (iv) new technologies 
for improvements in unitary operations processes, (v) water quality monitoring, (vi) energetics efficiency and (vii) sanitary economy. 

Table of Contents

Intellectual Property 

Trademarks  

We have secured registration of our logo and composite trademark at the Brazilian Institute of Industrial Property (Instituto Nacional 
da Propriedade Industrial), or the INPI.  We have registered with the INPI the following trademarks:  “PROJETO TIETÊ,” “ÁGUA DE 
REUSO SABESP,” “REVISTA DAE,” “PURA-PROGRAMA DE USO RACIONAL DA ÁGUA,” “USO RACIONAL DA ÁGUA,” 
“GOTUCHO,” “GOTA BORRALHEIRA,” “DR. GASTÃO” and “RATANTAN.”  Gotucho, Gota Borralheira, Dr. Gastão  and Ratantan  
are some of the characters of our children’s club (Clubinho SABESP), which is a tool for environmental education directed to children 
through our website).   

We have also filed applications with the INPI for registration of the following trademarks:  “LICACÃO,” “PARQUE DA 

INTEGRAÇÃO,” “PROGRAMA DE RECUPERAÇÃO AMBIENTAL,” “PROGRAMA CÓRREGO LIMPO,” “SIGNOS” (Sistema de 
Informação Geográfica no Saneamento), “SIGNOS NET (Sistemas de Informações Geográficas no Saneamento), “SCORPION,” 
“PROGRAMA ONDA LIMPA,” “PROL PROGRAMA DE RECICLAGEM DO ÓLEO DE FRITURA,” “SABESP SOLUÇÕES 
AMBIENTAIS,” “AGENTE DA GENTE – SABESP NA COMUNIDADE,” “SABESP INTELIGÊNCIA AMBIENTAL,” “AQUALOG – 
TECNOLOGIA SABESP,” “EFICAZ,” “ÁGUA DE REÚSO SABESP,” “ÁGUA SABESP AQUÍFERO GUARANI,” “ÁGUA SABESP 
ESTAÇÃO CANTAREIRA,” “CONTRATO DE FIDELIZAÇÃO SABESP,” “ESGOTOS NÃO DOMÉSTICOS SABESP,” “CLUBINHO 
SABESP,” and the following characters of the Clubinho SABESP:  “SUPER H2O,” “CAUÃ,” “IARA,” “SAYURI,” “CADU,” “DENIS,” 
and “GABI”. 

Patents 

We have the following patents granted by the INPI: 

•               water consumption measurement unit; 

•               equipment for alignment of motor-pump sets;  

•               a constructive device in a building hydraulic simulator for didactic purposes; 

•               biofilter odor control unit; 

•               device for the removal of supernatants in the treatment of sewage; and 

•               mobile device for the calibration of hydrometers. 

Software  

We have adopted an internal policy that provides for an active and effective audit and prevention of unauthorized software.  We have 

acquired the software licenses for all our workstations. 

We have also developed certain computer programs for management and control of water and sewage treatment facilities, as well as 

for third-party services management, called “AQUALOG,” “SGL (Bid Management System),” “Electronic Price Quotation” (Cotação 
Eletrônica de Preços), “SCORPION,” “SISDOC – Sistema de Controle de Documentos”, “Sistema de análise do comportamento 
metrológico de hidrômetros”, “Modelo padronizado de Laudo técnico-MPLT,” “PREGÃO SABESP ONLINE” and “SACE – Sistema de 
Atendimento Comercial Externo.”  We have also secured registration of these programs at the INPI.   

86 

  
  
  
  
  
  
AQUALOG is a Brazilian software designed to monitor water treatment through the employment of artificial intelligence.  In 2001, we 

completed the first rendering of services based on the AQUALOG software to a third party with the automatization of a water treatment 
plant in the city of Jaguará do Sul, State of Santa Catarina.  We have entered into an agreement to license the software to Sanesul, in the 
state of Mato Grosso do Sul and to Teuto’s drugs factory, in the city of Anapólis, state of Goiás.  We currently have a temporary license for 
the AQUALOG software and are awaiting its final registration with the INPI. 

SGL is an electronic price quotation system that allows us to view and control all bid and acquisition proceedings in real time. 

Domain Names 

We own the domain names described below which have been registered with the relevant entity in Brazil, Regristro.br: 

Table of Contents

•               www.sabesp.com.br;  
•               www.corregolimpo.com.br;   
•               www.projetotiete.com.br;   
•               www.revistadae.com.br;   
•               blogdasabesp.com.br;   
•               blogsabesp.com.br;   
•               sustentabilidadesabesp.com.br;   
•               clubinhosabesp.com.br; and   
•               superh2o.com.br.   

D.    Trend Information 

Several factors may affect our future results of operations, liquidity and capital resources, including: 

•               the interests of our controlling shareholder; 

•               regulations issued by the ARSESP regarding several aspects of our business, including with respect to our ability to adjust our 

tariffs; 

•               Brazilian economic conditions; 

•               meteorological conditions; 

•               the effects of any continued international financial turmoil that may affect liquidity in the Brazilian capital and lending 

markets; 

•               the effects that further changes in the Basic Sanitation Law and its interpretation may have on the basic sanitation industry in 

Brazil and on us; 

•               the effects of inflation in our results of operations; 

•               the effects of fluctuations in the value of the Brazilian real and in interest rates on our net interest income; 

•               the effects from the increase in tariff that occurred on September 11, 2010; 

•               the renewal of our concession agreements; and 

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•               the formalization of agreements with certain of the municipalities we serve. 

Each of these factors is described in more detail under “5.A. Operating and Financial Review and Prospects.” 

In addition, you should read “3.D. Risk Factors” for a discussion of the risks we face in our business operations, which could affect our 

business, results of operations or financial condition. 

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E.    Off----Balance Sheet Arrangements 

We had no off-balance sheet arrangements as of December 31, 2010. 

F.    Tabular Disclosure of Contractual Obligations 

Our debt obligations and other contractual obligations as of December 31, 2010 were as follows: 

Loans and financing 
Estimated interest payments(1) 
Operating and capital lease obligations(2) 
Alto Tietê PPP 
Pension plan contributions(3) 
PAES program(4) 
Purchase obligations 
Total 
___________ 

Less than 1 year 

1-3 years 

3-5 years 

(in millions of reais)  

More than 5 
years 

Total 

1,242.1 
661.7 
48.6 
73.6 
70.9 
34.7 
43.4 
2,175.0 

2,762.5 
1,094.1 
96.7 
164.4 
157.5 
53.7 
43.8 
4,372.7 

1,300.8 
801.3 
180.0 
86.6 
181.5 
- 
9.2 
2,559.4 

2,959.2 
1,920.8 
2,418.2 
950.5 
1,251.2 
- 
- 
9,499.9 

8,264.6 
4,477.9 
2,743.5 
1,275.1 
1,661.1 
88.4 
96.4 
18,607.0 

(1)   Estimated interest payments on loans and financing were determined considering the interest rates as of December 31, 2010.  However, our loans and financing are 

subject to variable interest indexation and foreign exchange fluctuations, and these estimated interest payments may differ significantly from payments actually made. 

(2)   Includes capital lease obligations which are collateralized by part of the billings from the provision of water and sewage services. 
(3)   Consists of pension plan contributions estimated for the following year. 
(4)   The PAES program, as set forth by Law No. 10,684, dated May 30, 2003. 

We believe that we can meet the maturity schedule through a combination of funds generated by operations, the net proceeds of new 
issuances of debt securities in the Brazilian and international capital markets and additional borrowings from domestic and foreign lenders.  
Our borrowings are not affected by seasonality.  For information concerning the interest rates on our indebtedness outstanding as of 
December 31, 2010, see Note 12 to our consolidated financial statements included elsewhere in this annual report. 
ITEM 6.        DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES 
A.    Directors and Senior Management 

Under our bylaws and Brazilian Corporate Law, we are managed by our board of directors (Conselho de Administração), which 
currently consists of ten directors, and a board of executive officers (Diretoria), which currently consists of six executive officers.   

As our controlling shareholder, the State has the ability to control the election of our board of directors and, therefore, our direction 
and future operations.  Upon the election of a new State governor and any resulting change in the administration of the State, all or some of 
the members of our board of directors, including our chairman, have historically been replaced by designees of the new administration.  
Our board of directors may in turn replace some or all of the executive officers.  See “Item 3.D. Risk Factors—Risks Relating to Our 
Control by the State of São Paulo—We are controlled by the State of São Paulo, whose interests may differ from ours or from minority 
shareholders’ interests, and which could have a material adverse effect on us.” 

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Board of Directors 

Our bylaws provide for a minimum of five and a maximum of 15 directors.  The members of our board of directors are elected at a 
general shareholders’ meeting to serve renewable two-year terms.  Each member of our board of directors must be our shareholder under 
Brazilian Corporate Law.  Pursuant to our bylaws, our employees have the option to elect one member of our board of directors.  Currently, 
our employees have not elected a director.  In addition, pursuant to Brazilian Corporate Law, at least one member of the board of directors 
of mixed capital companies, such as us, must be appointed by the minority shareholders.  Finally, according to the Novo Mercado rules, at 
least 20.0% of the board of directors must be comprised of independent members. 

The current members of our board of directors were elected in the general shareholders’ meeting held on April 28, 2011.  The tenure of 

the directors will end upon the election of the new members at the general shareholders’ meeting to be held in April 2012.  Currently, we 
have three directors considered independent under the Novo Mercado rules.  

Our board of directors ordinarily meets once a month or when called by a majority of the directors or the chairman.  Its responsibilities 
include the establishment of policy and general orientation of our business, and the appointment and supervision of our executive officers. 

The following are the names, ages, positions, dates of election and brief biographical descriptions of the current members of our board 

of directors:   

Age 

Position 

Director 
Edson de Oliveira Giriboni 
Sidney Estanislau Beraldo 
Dilma Seli Pena  
Walter Tesch 
Alberto Goldman 
Heraldo Gilberto de Oliveira 
Jerônimo Antunes 
Reinaldo Guerreiro 
Andrea Sandro Calabi 
Alexander Bialer 
______________________ 
* These directors comply with the independence requirements established by the Novo Mercado rules. 

Chairman 
Director 
Director 
Director 
Director 
Director 
Independent Director* 
Independent Director* 
Director 
Independent Director* 

58 
60 
61 
67 
73 
47 
55 
58 
65 
64 

Date Elected 

April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 

Edson Giriboni.  Mr. Giriboni has been the chairman of our board of directors since April 2011.  Mr. Giriboni holds a degree in civil 
engineering  from  the  Escola  Politécnica  of  the  Universidade  de  São  Paulo,  a  degree  in  business  administration  from  the  Associação 
Educacional  de  Itapetininga,  and  post-graduate  degrees  from  the  Universidade  de  Campinas  and  the  Universidade  Federal  de  Minas 
Gerais.  Mr. Giriboni has been the Secretary of Sanitation and Water Resources of the State of São Paulo since January 2011.  He is also a 
State Deputy in São Paulo.  Mr. Giriboni was the general superintendent of Fepasa and the vice-mayor of the city of Itapetininga where he 
also worked at the Municipal Department of Works and Public Utilities, and subsequently, in the Municipal Department of Industry and 
Development. 

Sidney de Oliveira Beraldo.  Mr. Beraldo has been a member of our board of directors since April 2011.  Mr. Beraldo holds a degree in 
biological sciences and a degree in business administration and post-graduate degrees in business administration.  He has been the Chief of 
Staff of the São Paulo State Government Office since January 2011.  Mr. Beraldo started his career in politics as city councilman in 1977 
and was the mayor of the city São João da Boa Vista between 1983 and 1988.  In 1994, Mr. Beraldo was elected State Deputy, position he 
held until March 2011 after several re-elections.  He was the president of the Legislative Assembly from 2003 to 2005, president of the 
State Council of the political party PSDB from 2005 to 2006, head of the Public Management Department until April 2010 and the general 
coordinator of Governor Geraldo Alckmin’s campaign. 

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Dilma Seli Pena.  Ms. Pena has been a member of our board of directors since January 2007 and our Chief Executive Officer since 

January 2011.  She holds a master’s degree in public administration from FGV and a degree in geography from the Universidade de 
Brasília.  In 1976, she began her career as a public servant working for the Research Institute of Applied Economics (Instituto de Pesquisa 
Econômica Aplicada), or IPEA.  She was director of the sanitation division of the Urban Policy Secretariat of the Ministry of Planning 
Office (Secretaria de Política de Saneamento Urbano), director of the strategic investments division of the Ministry of Planning 
(Investimentos Estratégicos do Ministério de Planejamento) and director of the Brazilian National Water Agency (Agência Nacional de 
Águas).  She was a deputy secretary of the Economics and Planning Secretariat of the São Paulo state government (Adjunta da Secretaria 
de Economia e Planejamento do Estado de São Paulo) and an effective member of the Environmental Board of the Industry Federation of 
the State of São Paulo (Conselho Ambiental da Federação das Indústrias do Estado de São Paulo).  From 2007 to 2010, she was 
responsible for the State Secretariat of Sanitation and Water Resources (formerly known as the State Secretariat of Sanitation and Energy) 
and has been the chairperson of the board of directors of EMAE and CESP, companies owned by the State of São Paulo.  She has authored 
a number of articles, texts and books in the areas of sanitation, water resources and planning. 

Walter  Tesch.   Mr. Tesch  has  been  a  member  of  our  board  of  directors  since  April 2011.   He  holds  a  degree  in  sociology  from  the 
University of Uruguay and a master’s degree in social sciences from the Pontifical Catholic University of Peru.  Mr. Tesch has been the 
coordinator  of  the  Water  Resources  Coordination  Department  of  the  State  of  São  Paulo  since  January 2011,  and  has  worked  in  Peru, 
Venezuela  and  several  Latin  American  countries.   Between  2005  and  2008,  Mr. Tesch  was  the  head  of  the  administrative  district  of 
Parelheiros,  a  water  source  region  in  the  city  of  São  Paulo,  and  until  2010  he  was  the  deputy  Executive  Secretary  of  the  “Water 
Defense” (“Defesa das Águas”) operation, an agreement between the São Paulo Municipal and State governments.  Mr. Tesch is also the 
author of books on cooperativism and water sources in the city of São Paulo.  

Alberto Goldman.  Mr. Goldman has been a member of our board of directors since April 2011.  Mr. Goldman holds a degree in civil 
engineering  from  the  Escola  Politécnica  of  the  Universidade  de  São  Paulo.   Mr. Goldman  was  vice-governor  of  São  Paulo  from 
January 2007 to March 2010 and governor of São Paulo from April to December 2010.  He was a member of our board of directors from 
April  2009  to  March  2010.   He  was  also  the  State  Secretary  of  Development  (currently,  Development,  Science  and  Technology  State 
Department) from January 2007 to February 2009, State Deputy for two terms and Federal Deputy for six terms.  Mr. Goldman was the 
president of the Budget Mixed Committee in 2000 and speaker of the General Telecommunications Law.  He was the Special Secretary of 
State  of  the  Program  Coordination  in  1987  and  of  the  Administration  Coordination  between  1988  and  1990.   Mr. Goldman  was  the 
Minister of Transportation from 1992 to 1994. 

Heraldo Gilberto de Oliveira.  Mr. Oliveira has been a member of our board of directors since November 2009.  He holds a degree in 
accounting and a degree in business administration.  He also holds a master’s degree in controllership and accounting from the Faculdade 
de Economia, Administração e Contabilidade of the Universidade de São Paulo, or FEA-USP.  Mr. de Oliveira is a professor of Capital 
Markets and Investor Relations in the post-graduation and MBA courses at the Fundação Instituto de Pesquisas Contábeis, Atuariais e 
Financeiras, or FIPECAFI.  Mr. Oliveira is a partner at FCO Consultores Associados and works as an accounting and financial expert 
consultant.  He worked for ten years as an independent accountant.  Mr. Oliveira was a member of the board of directors and the 
coordinator of the audit committee of Banco Nossa Caixa S.A. from 2007 to August 2009 and since September 2009 has been the 
coordinator of the audit committee of Banco Industrial e Comercial S.A. – BICBANCO.  He has been a director of the Instituto de 
Executivos em Finanças of São Paulo since September 2009. 

Jerônimo Antunes.  Mr. Antunes has been a member of our board of directors since April 2008.  He holds a master’s and Ph.D. degree 

in controllership and accounting from the Universidade de São Paulo and holds a degree in business administration and accounting.  He 
has been a certified independent accountant and consultant in accountability and corporate finance since 1977.  He has been a professor at 
FEA-USP since 1999, a professor of several MBA courses, at FIPECAFI since 2000, at FEA-USP, since 2000, and at FIA – Fundação 
Instituto de Administração since 2006.  He was a professor at the Universidade Federal do Ceará from 2000 to 2005 and in several other 
institutions.  He was a director of FIPECAFI, from 2000 to 2007.  He was a board member and director of IBRACON from 1998 to 2006 
and a director of Associação Nacional dos Executivos de Finanças, Administração e Contabilidade, or ANEFAC, from 1994 to 2000.  

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Reinaldo Guerreiro.  Mr. Guerreiro has been a member of our board of directors since January 2007.  He holds a Ph.D. in accounting 

and controllership, a master’s degree in accounting and controllership and a bachelor’s degree in accounting sciences, all of them from 
FEA-USP, where he is the vice-director of the Economy, Business and Accounting College.  Mr. Guerreiro also headed the Department of 
Accounting and Actuarial Sciences at FEA-USP for many years.  He was a corporate consultant for several international consultancy firms 
such as Roberto Dreyfuss Consultores, Klynveld Main Goerdeler Auditores S/C, Sérgio Bio, Splendore & Associados S/C Ltda. 
Consultores em Administração, Artur Young Consultores, Biedermann, Bordasch, Ernest & Whinney, Directa and BDO Consultores.  He 
is also a consultant specialized in economic management.  He has worked in many projects in the areas of economic management, costs, 
budgeting and information systems in several companies such as Grupo Zillo Lorenzetti, Grupo Feital, Construtora Mendes Junior, Starret 
Indústria e Comunicação, Companhia Municipal de Transporte Coletivo de Araucária, Ferrovia Paulista S.A., Companhia Siderúrgica 
Paulista, Mafersa S.A., Usina Santa Elisa, Gillete do Brasil, Hansen Máquinas e Equipamentos, Cipla Indústria do Lar, Metalúrgica 
Matarazzo, Elebra Informática, NEC do Brasil, Caixa Econômica Federal and Banco do Brasil.   

Andrea  Sandro  Calabi.   Mr.  Calabi  has  been  a  member  of  our  board  of  directors  since  April  2011.   Mr.  Calabi  holds  a  degree  in 
economics from FEA-USP, a master’s degree in economics from the Instituto de Economia e Pesquisa of the Universidade de São Paulo
(IPE-USP), a master’s of arts and Ph.D. in economics from the University of California, Berkeley.  Mr. Calabi has been the State Secretary 
of the São Paulo State Treasury since January 2011.  He was the São Paulo State Secretary of Economics and Planning from January 2003 
to February 2005.  Mr. Calabi was the president of the BNDES, FINAME (the Special Agency of Industrial Financing), BNDESPAR (the 
holding  company  of  BNDES)  from  July  1999  to  February  2000  and  also  of  Banco  do  Brasil,  from  January  to  July  to  1999.   He  was 
Executive Secretary of the Ministry of Planning and president of the Institute of Applied Economics Research of Ministry of Planning, or 
IPEA,  from  1995  to  1996,  Secretary  of  the  National  Treasury  of  the  Ministry  of  Finance  from  1986  to  1988,  General  Secretary  of  the 
Department  of  Planning  of  Presidency  and  Chief  Executive  Officer  of  the  IPEA  from  1985  to  1986.   Mr.  Calabi  was  a  member  and 
chairman of several boards of directors and currently is a member of the board of directors of CESP, Higher Economics Council of FIESP, 
Institute of Cancer, Centro Cultural, FFM – Faculty of Medicine Foundation – USP, Albert Einstein Hospital and of the IBGC – Brazilian 
Institute of Corporate Governance. 

Alexander Bialer.  Mr. Bialer has been a member of our board of directors since April 2003.  He holds a degree in mechanical 
engineering from Instituto Tecnológico da Aeronáutica—ITA and a specialization degree in systems administration from the FGV.  He is 
the chairman of the board of directors of GE Hydro Inepar.  In addition, Mr. Bialer is a member of the advisory councils of GE Brasil 
Previdência, GE Celma, Synergy Group and Associação Brasileira de Infraestrutura e Indústrias de Base.  He has previously worked in 
Avon, Máquinas Piratininga and ASEA.  Mr. Bialer was a member of the board of directors of COPLEN S/A, CELMA Motores Elétricos 
S/A, GEVISA S/A, Inepar Eletrônica S/A, GE CELMA S/A, GE Dako S/A, GE VARIG S/A and GE Hydro Inepar S/A. 

Board of Executive Officers 

Our board of executive officers is composed of six executive officers appointed by our board of directors for renewable two year 
terms.  Our executive officers are responsible for all matters concerning our day-to-day management and operations.  Members of our 
board of executive officers have individual responsibilities established by our board of directors and our bylaws.   

The following are the names, ages, positions, dates of election and brief biographical descriptions of our board of executive officers:   

Executive Officer 
Dilma Seli Pena 
Manuelito Pereira Magalhães Junior 
Rui de Britto Álvares Affonso 

Paulo Massato Yoshimoto 
Luiz Paulo de Almeida Neto 
Marcelo Salles Holanda de Freitas 

Age 
61 
43 
53 

58 
55 
55 

Position 
Chief Executive Officer 
Corporate Management Officer 
Chief Financial Officer and Investor 
Relations Officer 
Metropolitan Region Officer 
Regional Systems Officer 
Technology, Enterprises and 
Environment Officer 

Date Elected 

June 2, 2011 
June 2, 2011 
June 2, 2011 

June 2, 2011 
June 2, 2011 
June 2, 2011 

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Dilma Seli Pena.  See above “—Board of Directors.”   

Manuelito Pereira Magalhães Júnior.  Mr. Magalhães has been our Corporate Management Officer since January 2011.  Mr. 
Magalhães was a member of our board of directors from January 2007 to Febryary 2011.  He holds a degree in economic sciences and a 
master’s degree in economic sciences from the Instituto de Economia, Universidade Estadual de Campinas.  He was a member of the 
board of directors of the Companhia de Engenharia de Tráfego de São Paulo, of the COHAB and, of the Empresa de Tecnologia de 
Informação e Comunicação de São Paulo.  He was a parliamentary advisor in the Federal Senate.  From 1998 to 2002, he was the special 
advisor of the Minister of Health.  From 2005 to 2006 he was the ombudsman of the National Supplementary Health Agency, or ANS.  
From 2005 to 2006, he was the deputy secretary of the Planning Secretariat and the secretary of Planning of the Municipality of São Paulo.  
He was also the technical advisor, the secretary of finance and the director of the Department of Advisory, Planning and Management in 
the municipality of Campinas, State of São Paulo.  

Rui de Britto Álvares Affonso.  Mr. Affonso has been our Chief Financial Officer and Investor Relations Officer since July 2003.  
Mr. Affonso holds a Ph.D. and a master’s degree in economics from the Universidade Estadual de Campinas, or UNICAMP, and a degree 
in economics from the Universidade de São Paulo.  He has been a professor at UNICAMP since 1986, a professor at FEA-USP from 1983 
to 1999, and a director of public economy at Fundação do Desenvolvimento Administrativo from 1994 to 2003.  He also represented Brazil 
on the board of the Forum of Federations (a non-governmental entity based in Canada) from 2000 to 2006.  Mr. Affonso has also held 
several positions at the State government.  

Paulo Massato Yoshimoto.  Mr. Yoshimoto has been our metropolitan officer since February 2004.  He holds a degree in civil 

engineering from the Escola de Engenharia de Lins.  Mr. Yoshimoto joined us in 1983, and has held the positions of executive assistant to 
the operations office and head of the water production and maintenance and metropolitan planning and development departments.  Mr. 
Yoshimoto has also held a number of different positions at the Empresa Metropolitana de Planejamento, from 1975 to 1983.   

Luiz Paulo de Almeida Neto.  Mr. Almeida Neto has been our regional systems officer since January 2011.  He holds a degree in civil 
engineering from the Escola Politécnica of the Universidade de São Paulo, a business administration degree from Fundação Educacional 
Votuporanga/SP and a post-graduate degree in sanitary engineering from Faculdade de Saúde Pública of the Universidade de São Paulo.  
Mr. Almeida joined us in 1979 and has worked with us as head of the Baixo Tietê Business Unit responsible for the management of areas 
located in the hydrographic basins of Baixo Tietê, Tietê-Batalha, São José dos Dourados and Turvo Grande.  

Marcelo Salles Holanda de Freitas.  Mr. Freitas has been our Technology, Enterprises and Environment Officer since January 2007.  

He holds a degree in civil engineering and a post-graduate degree in sanitation from the Escola Politécnica at the Univeridade de São 
Paulo.  He also has a specialization degree in business administration from the Instituto Brasileiro do Mercado de Capitais.  He is a regular 
member of some of the most important institutions and associations of the sanitation and environment market.  He was our vice-chairman 
for the interior and for the metropolitan region.  He was the executive officer of projects of the Ondeo Services do Brasil, executive officer 
of sanitation of Suez Ambiental, chief executive officer of Águas do Amazonas and executive officer of the sanitation services of Etep 
Consultoria, Gerenciamento e Serviços. 

B.    Compensation  

Pursuant to Brazilian Corporate Law, our shareholders are responsible for establishing the aggregate amount of compensation we pay 

to the members of our board of directors, members of our fiscal committee and our executive officers.  According to Instruction No. 480 
issued by CVM, we have to periodically disclose certain information on the aggregate compensation such as averages and fringe benefits. 

For the year ended December 31, 2010, the aggregate compensation, including benefits in kind granted that we paid to members of our 

board of directors, board of executive officers and fiscal committee for services in all capacities was R$3.7 million.  

The tables below sets forth the break down of the total compensation received by our directors and members of our board of executive 

officers and fiscal committee and other data related to their compensation for the periods indicated: 

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Total compensation per administrative body (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Total amount of compensation (in thousands of R$) 

Number of members: 
Board of directors 
Board of executive officers 
Fiscal committee 

Fixed annual compensation 
Salary (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Direct and indirect benefits (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Variable compensation 

Bonus (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Maximum amount of compensation (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Minimum amount of compensation (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Average amount compensation (in thousands of R$): 

Board of directors 
Board of executive officers 
Fiscal committee 

Profit Sharing and Pension Plans   

Table of Contents

2008 

Year ended December 31, 
2009 

2010 

1,272 
2,105 
228 
3,605 

11 
6 
5 

848 
1,212 
228 

- 
384 
- 

424 
509 
- 

84 
312 
38 

38 
297 
38 

116 
351 
46 

1,226 
2,199 
231 
3,656 

13 
6 
5 

918 
1,283 
231 

- 
406 
- 

307 
511 
- 

84 
311 
38 

41 
303 
38 

94 
367 
46 

1,215 
2,231 
229 
3,675 

10 
6 
6 

903 
1,304 
229 

- 
394 
- 

312 
533 
- 

152 
365 
38 

31 
304 
9 

121 
372 
38 

We have established a pension and benefits fund (Fundação SABESP de Seguridade Social), or SABESPREV, to provide our 
employees with retirement and pension benefits.  This pension plan provides defined-benefit payments to former employees and their 
families.  Both we and our employees make contributions to the pension plan.  We are also required to pay supplemental pension payments 
relating to the employment contract of certain employees prior to the creation of SABESPREV.  Our total contributions to the pension plan 
totaled R$12.9 million and R$13.8 million in 2009 and 2010, respectively.  Based on independent actuarial reports, as of December 31, 
2010, our obligation under these plans totaled R$1,572.9 million.  For further information on our pension plans see Note 16 to our 
consolidated financial statements. 

Beginning in 2008, payments under the profit-sharing plan were based both on general goals that evaluate us as a whole and on other 

goals that evaluate the performance our different business units.  Payments are proportionally reduced annually if the goals are not 
completely achieved. 

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We recorded profit-sharing expenses of R$53.4 million and R$52.6 million in 2009 and 2010, respectively.  We do not have a stock-

option plan for our employees. 

C.    Board Practices 

The members of our board of directors are elected at a general shareholders’ meeting to serve renewable two-year terms.  Our board of 
directors ordinarily meets once a month or when called by a majority of the directors or the chairman.  See “Item 6.A. Directors and Senior 
Management—Board of Directors.”   

Our board of executive officers is composed of six executive officers appointed by our board of directors for renewable two-year 
terms.  Meetings of our board of executive officers are held weekly in the case of ordinary meetings or when called by the chief executive 
officer in the case of special or extraordinary meetings.  See “Item 6.A. Directors and Senior Management—Board of Executive Officers.” 

None of our directors and/or executive officers is a party to an employment contract providing for benefits upon termination of 
employment.  Those directors and officers who are also our employees will remain as our employees after their tenure as directors and/or 
officers, in this case, maintaining all benefits granted to our employees.  

Fiscal Committee (Conselho Fiscal)  

Our fiscal committee, which is established on a permanent basis and generally meets once a month consists of four members and four 

alternates.  The current members of our fiscal committee were elected in the shareholders’ meeting held on April 28, 2011.  Their tenure 
will end in 2012.  The primary responsibility of the fiscal committee, which is independent from management and from the external 
auditors appointed by our board of directors, is to review our consolidated financial statements and report on them to our shareholders. 

The following are the names, ages, position, date of election and brief biographical descriptions of the current and alternate members 

of our fiscal committee:   

Fiscal Committee Members 

Age 

Position 

Date Elected 

José Antonio Xavier 
Humberto Macedo Puccinelli 
Deraldo de Souza Mesquita Junior 
Alexandre Luiz Oliveira de Toledo 
Tomás Bruginski de Paula 
Antônio Cláudio Zeituni 
José Rubens Gozzo Pereira   
Joaldir Reynaldo Machado 

50 
53 
51 
51 
50 
40 
63 
62 

Member 
Member 
Member 
Member 
Alternate 
Alternate 
Alternate 
Alternate 

April 28, 2011 
April 28, 2011 
April 28, 2010 
April 28, 2010 
April 28, 2011 
April 28, 2011 
April 28, 2011 
April 28, 2011 

José Antonio Xavier.  Mr. Xavier has been a member of our fiscal committee since April 2011.  He holds a degree in economy and 
governmental controllership from the Pontifícia Universidade Católica de São Paulo (PUC-SP).  Mr. Xavier was an auditor of the State 
Treasury from 1993 to 1998 and the Technical Director of the State Treasury since 1998. 

Humberto  Macedo  Puccinelli.   Mr. Puccinelli  has  been  a  member  of  our  fiscal  committee  since  April 2011.   Mr. Puccinelli  holds  a 
degree in economics from the Pontifícia Universidade Católica de São Paulo (PUC-SP).  He worked at the Department of Planning from 
1985 to 1995, at the Health State Department as secretary assistant from 1995 to1996, at the State Treasury from 1996 to 2002, and at the 
Planning Department as secretary assistant in 2003.  Since January 2004 he has been the Technical Assistant of the State Treasury.  

Deraldo de Souza Mesquita Junior.  Mr. Mesquita Junior has been a member of our fiscal committee since April 2010.  He holds a 
degree and a master’s degree in economics from UNICAMP.  Mr. Mesquita Junior has worked in the Economy and Planning Secretariat of 
the São Paulo State Government – Public-Private Partnership Unit since 2004, and is currently an analyst within that unit.  He has also 
worked in several other government departments, such as the Secretary’s Office of Economy and Planning Secretariat, the São Paulo State 
Government Finance Affairs Secretariat, and the Economics Advisory Board. 

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Alexandre Luiz de Oliveira Toledo.  Mr. Toledo has been a member of our fiscal committee since April 2010.  He holds a degree in 

law from the Universidade de São Paulo.  Mr. Toledo has worked with financial institutions for 20 years, especially in capital markets 
transactions, defending minority shareholders.  He has worked in the legal departments of Bradesco de Investimentos and Schahin Cury 
S.A.  Mr. Toledo is and has been a member of various fiscal committees and board of directors including CELG, CST, Usiminas and 
Plascar. 

Tomás Bruginski de Paula.  Mr. de Paula has been an alternate member of our fiscal committee since April 2006. He holds a degree 
and a master’s degree in economics from UNICAMP.  He has been a Professor at the Economics Department of Pontifícia Universidade 
Católica – PUC since 1986. He is also a member of the fiscal committee of the São Paulo Company of Electric Power Transmission. 
Mr. de Paula has worked as a consultant for several entities, including the Economic Committee for Latin America (CEPAL), the United 
Nations Development Program (PNUD), the Brazilian Institute of Municipal Administration (IBAM), the Brazilian School of Public and 
Business Administration of FGV (EBAPE/FGV), the State System Data Analysis Foundation (SEADE), and the Brazilian Electricity 
Agency in the infrastructure and public policy financing areas. 

Antônio Cláudio Zeituni.  Mr. Zeituni has been an alternate member of our fiscal committee since April 2011.  He holds a degree in 

law from the Pontifícia Universidade Católica de São Paulo.  Mr. Zeituni has worked with banking, civil and administrative law.  He has 
also worked in several law firms, including Oliveira de Toledo & Advogados Associados where he is currently a partner. 

José Rubens Gozzo Pereira.  Mr. Pereira has been an alternate member of our fiscal committee since April 2010. He holds a degree in 

economics from Universidade Mackenzie, a graduate degree from FGV and attended international studies extension programs at the 
Universities of London and Paris. He has been responsible for the Funding department of the Finance Secretariat since 1989. Mr. Pereira 
held positions in the public sector in the DAEE, where he was responsible for the Budget and Financing area; he was an executive officer 
at Companhia de Engenharia de Tráfego – CET, and in the International Cooperation department of Companhia Energetica de Silo Paulo 
– CESP. Mr. Pereira has been the coordinator for the Funding Department of the Silo Paulo State Government in the Finance Secretariat 
since 1991. 

Joaldir Reinaldo Machado.  Mr. Machado has been an alternate member of our fiscal committee since April 2010. He holds a degree 

in economics from Universidade de São Paulo with a major in regional planning. Mr. Machado has been an employee of SEADE since 
1979. He has also held several other management positions, including management advisor to Empresa Metropolitana de Planejamento – 
EMPLASA, financial executive of the Finance Department of our Company, chief of staff of the Environment Secretariat and chief of staff 
and head of department of the SEADE Foundation. Mr. Machado is currently the chief of staff of the Economy and Planning Secretariat of 
the São Paulo State Government. 

Audit Committee 

Our bylaws provide for an audit committee to be comprised of three board members, who will cumulatively comply with the 
requirements of (i) independence, (ii) technical expertise, and (iii) identifying and complying with applicable exemptions in accordance 
with the United States Securities and Exchange Commission, or the SEC, and New York Stock Exchange, or NYSE, rules.  The members 
are appointed by the board of directors.   

The audit committee is responsible for assisting and advising the board of directors in its responsibilities to ensure the quality, 

transparency and integrity of our published financial information.  To this end, the audit committee supervises all matters relating to 
accounting, internal controls and the internal and independent audit functions.  The audit committee and its members have no decision 
making powers or executive functions. 

The minimum availability required from each member of the audit committee is thirty hours per month.  Under our bylaws, the 
members shall exercise their roles for the same period as their corresponding term of office, or until otherwise resolved by the general 
shareholders’ meeting or by resolution of the board of directors.   

The following are the names, positions and dates of election of the members of our audit committee: 

Director 

Jerônimo Antunes 
Reinaldo Guerreiro  
Heraldo Gilberto de Oliveira  

Position 

Coordinator and Financial Expert 
Member 
Member 

Date Elected 

April 28, 2011 
April 28, 2011 
April 28, 2011 

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Corporate Governance Practices 

The significant differences between our corporate governance practices and NYSE standards can be found on our website, 
www.sabesp.com.br, at the following location:  Investors Relations – Corporate Governance – SABESP and NYSE Standards.  The 
information found at this website is not incorporated by reference into this document. 

D.    Employees  

As of December 31, 2010, we had 15,330 full-time employees.  In 2010, we had an average of 1,056 trainees and 548 apprentices 

(aprendizes), as defined by federal Law No. 10,097, dated December 19, 2000.  

The following table sets forth the number of our full-time employees by main category of activity and geographic location as of the 

dates indicated: 

Number of employees by category of activity: 

Projects and operations 
Administration 
Finance 
Marketing 

Number of employees by corporate division: 

Head office 
São Paulo metropolitan region 
Regional Systems 

Total number of employees 

2008 

As of December 31, 
2009 

2010 

10,932 
2,819 
522 
2,376 

1,623 
7,884 
7,142 
16,649  

9,763 
2,574 
490 
2,276 

1,541 
7,055 
6,507 
15,103 

10,092 
2.527 
477 
2,234 

1,496 
7,135 
6,699 
15,330 

The average tenure of our employees is approximately 17 years.  We also outsource certain services such as maintenance, delivery of 
water and sewage bills, meter reading, catering and security.  We believe that our relations with our employees are generally satisfactory. 

Approximately 70% of all our employees are members of unions.  The five main unions that represent our employees are the Sindicato 

dos Trabalhadores em Água, Esgoto e Meio Ambiente de São Paulo - SINTAEMA, Sindicato dos Trabalhadores da Região Urbana de 
Santos, São Vicente, Santos, Região Metropolitana de Santos, Litoral Sul e Vale Ribeira - SINTIUS, the Sindicato dos Engenheiros do 
Estado de São Paulo - SEESP, the Sindicato dos Advogados de São Paulo - SASP and the Sindicato dos Técnicos Industriais de Nível 
Médio(2ºGrau) no Estado de São Paulo - SINTEC.  As a result of the 2010 collective bargaining discussions, wages were temporarily 
increased by 5.05%.  The unions filed a claim with the Labor Court seeking to, among other requests, increase wages by 1.5%, increase the 
salary base over which the annual profit distribution is calculated, increase payment of overtime in 100% and increase additional payment 
of working night hours from 20% to 50%.  The Labor Court decided in favor of the unions and we appealed from the decision.  We are still 
awaiting for the decision on our appeal.  Any unfavorable decision by the Labor Court will result in an increase in expenses with 
personnel.  Our most recent collective bargaining agreement, entered into in 2011: (i) increased wages by 6.39% (which corresponds to the 
adjustment for inflation for the period) plus a real gain of 1.51%, (ii) established an employment guarantee for 98% of our employees, (iii) 
increased the number of days permitted under maternity leave from 120 to 180 days and (iv) increased meal vouchers by 10.07%, among 
other provisions. 

We have experienced the following strikes in the last seven years, none of which interrupted the essential services that we provide:  a 

two-day strike in June 2005, a one-day strike in May 2006, a four-day strike in June 2008, a three-day strike in May 2009, an eight-day 
strike in May 2010 and a one day strike in 2011.  Under Brazilian law, our non-administrative employees are considered “essential 
employees” and, therefore, are limited in their right to strike. 

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E.    Share Ownership 

As of June 20, 2011, the members of the board of directors and the executive officers owned an aggregate of 2,611 common shares.  
The members of our board of directors and our executive officers, on an individual basis and as a group, beneficially own less than 0.1% of 
our common shares.  See “Item 7.A. Major Shareholder” for more information.  As of the same date, none of our directors and executive 
officers owned any stock option plans. 
ITEM 7.        MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS 
A.    Major Shareholder 

Our outstanding capital stock as of December 31, 2010, consisted of 227,836,623 common shares, without par value.  Under our 

bylaws and the State laws, the State is required to own at least one-half plus one of our outstanding common shares.  All of our 
shareholders, including the State, have the same voting rights. 

The following table sets forth ownership information for each of our shareholders that beneficially owned 5.0% or more of our 

common shares and for our officers and directors, individually and as a group, as of June 20, 2011.  

Common shares 

State of São Paulo 
Directors and executive officers of SABESP(1) 
Others 
Total(2) 
_____________ 
(1)   Our directors and executive officers collectively own less than 0.1% of our outstanding common shares. 
(2)   As of December 31, 2010, 22.78% of our outstanding common shares were held by 2,651 registered shareholders in Brazil. 

Shares 

114,508,084 
2,611 
113,325,928 
227,836,623 

% 

50.3% 
− 
49.7% 
100.0%  

As of June 20, 2011, 27.2% of our outstanding common shares were held in the United States, in the form of ADSs.  According to the 

ADS depositary’s records, which contains information regarding the ownership of our ADSs, there were, on May 31, 2011, 35 record 
holders of ADSs in the United States. 

B.    Related Party Transactions 

Transactions with the State of São Paulo 

We have entered into extensive transactions with the State, which is our controlling shareholder, and we expect to continue to do so.  

The State is our largest customer.  It owns some of the facilities that we use in our business, it is one of the governmental entities that 
regulate our business, and it has assisted us in obtaining financing on favorable terms. 

Many of our transactions with the State reflect policies of the State that depend on decisions of elected officials or public servants, and 

are accordingly subject to change.  Among the practices that could change are those described below concerning the provision of State 
guarantees, and the terms on which we use State-owned reservoirs.  

Provision of Services 

We provide water and sewage services to the federal government, state and municipal governments and government entities in the 
ordinary course of our business.  Sales of water and sewage services to the State, including State entities, totaled R$358.3 million in 2009 
and R$383.5 million in 2010.  Our accounts receivable from the State for water supply and sewage services totaled R$169.5 million and 
R$157.2 million, as of December 31, 2009 and 2010, respectively.  In addition, as required by law, we invest our cash and cash equivalents 
with government financial institutions in short-term securities. 

Payment of Pensions 

Pursuant to a law enacted by the State, certain former employees of some State-owned companies that provided services to us in the 

past and later merged to form our Company acquired a legal right to receive supplemental pension benefit payments.  These rights are 
referred to as “Plan G0.”  These amounts are paid by us, on behalf of the State, and are claimed by us as reimbursements from the State, as 
primary obligor.  In 2009 and 2010, we made payments to former employees of R$108.0 million and R$118.4 million, respectively, in 
respect of Plan G0.  The State made reimbursements in 2009 and 2010 in the amount of R$83.7 million and R$59.0 million, respectively.  

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Agreements with the State 

In September 1997, we and the State entered into a memorandum of understanding providing that we would, in effect, apply dividends 

we declared that were otherwise payable to the State to offset accounts receivable in connection with the provision of water and sewage 
services to the State and its controlled entities.   

On December 11, 2001, we entered into an agreement with the State and the DAEE.  Pursuant to this agreement, the State 

acknowledged and agreed, subject to an audit by a State-appointed auditor, to pay us amounts it owed to us in respect of: 

•               water and sewage services we provided to governmental agencies, State-owned autonomous entities and foundations through 
December 1, 2001, and that was not offset in accordance with the September 1997 memorandum of understanding, in the total 
amount of R$358.2 million.  This amount was renegotiated and included in the second amendment to this agreement discussed 
below; and  

•               supplemental retirement and pension benefits we paid from March 1986 to November 2001 on behalf of the State to former 

employees of the State-owned companies which merged to form our Company; as we did not reach an agreement regarding these 
amounts, a joint inquiry has commenced in order to ensure agreement between us and the State, in the total amount of 
R$320.6 million.  This amount was renegotiated and included in the third amendment to this agreement discussed below. 

The agreement provided that the DAEE would transfer to us ownership of the Taiaçupeba, Jundiaí, Biritiba, Paraitinga and Ponte Nova 

reservoirs (herein after referred to as “the reservoirs”), which form the Alto Tietê system, and that the fair value of these assets would 
reduce the amounts owed to us by the State. 

Under the December 2001 agreement, in 2002, a State-owned construction company (Companhia Paulista de Obras e Serviços), or the 

CPOS, on behalf of the State, and an independent appraisal firm (Engenharia de Avaliações), or the ENGEVAL, on our behalf, presented 
their valuation reports relating to the reservoirs.  Under the agreement, the arithmetic average of these appraisals is deemed the fair value of 
the reservoirs.  The appraisals contained in these reports were in the amounts of R$335.8 million and R$341.2 million, respectively.  
Because we had already made investments in these reservoirs by then, the arithmetic average of the appraisals submitted to our board of 
directors by August 2002, R$300.9 million, was net of a percentage corresponding to these investments.  Our board of directors approved 
the valuation reports. 

Under the December 2001 agreement, for amounts due in excess of the fair value of the reservoirs, the State is to make payments in 
114 consecutive monthly installments.  The nominal amount owed by the State would not be indexed to inflation or earn interest if there 
was a delay in concluding the appraisal of fair value.  The installments will be indexed on a monthly basis by the IGP-M index, plus 6.0% 
per year, starting on the date the first installment becomes due. 

On October 29, 2003, the Public Prosecution Office of the State of São Paulo (Ministério Público do Estado de São Paulo), on behalf 
of the people of the State, brought a civil public action in a Trial Court of the State of São Paulo (12a Vara da Fazenda Pública do Estado 
de São Paulo) alleging that a transfer to us of ownership of the Alto Tietê system reservoirs from the DAEE would be illegal.  An 
injunction against the transfer of ownership of such reservoirs was granted but was later reversed.  However, in October 2004, the court of 
first instance handed down its judgment on the civil public action and declared the agreement between us, DAEE and State of São Paulo 
null and void.  This decision was suspended by us, and the State treasury and DAEE appealed the decision.  On August 23, 2010, the 
appeal was denied.  We have petitioned for clarification of the appeal court’s decision and will seek to take the case to the Supreme Court.  
The effects of the appeal court’s decision will be suspended until the end of the legal process.  Our legal counsel has assessed the risk of 
loss as probable, which would prohibit the transfer of the reservoirs in payment of the accounts receivable due from the State. 

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The December 2001 agreement also provided that the legal advisors of the State would carry out specific analyses, which have 
commenced, to ensure agreement among the parties as to the methodology employed in determining the amount of reimbursement for 
pension benefits owed to us by the State.  The commencement of payments with respect to pension amounts owed to us by the State has 
been postponed until these analyses are completed, the appraisal report is approved and the credit assignments relating to the transfer of the 
reservoirs are formalized.  As discussed above, the transfer of these reservoirs is currently being disputed and we are not certain whether 
the transfer will be legally permitted.  Under the December 2001 agreement, the first payment was to be made in July 2002.   

On March 22, 2004, we and the State entered into a first amendment to the December 2001 agreement.  Under this amendment, the 

State acknowledged that it owed R$581.8 million to us relating to unpaid accounts receivable from the State until February 29, 2004, and 
we acknowledged that we owed an aggregate amount of R$518.7 million to the State as dividends, in the form of interest on shareholders’ 
equity.  Accordingly, we and the State agreed to offset each other’s credit up to the limit of R$404.9 million, which was an amount 
adjusted up to February 2004.  The outstanding balance of R$176.9 million (as of February 29, 2004) of the State’s consolidated debt 
would be paid in consecutive monthly installments from May 2005 until April 2009.  These installments would be indexed according to the 
IPCA index, plus an interest rate of 0.5% per month.  Upon the execution of the first amendment, part of the debt that the State owed to us 
for the use of water and sewage services through February 2004 was offset by the debt that we owed to the State as dividends, in the form 
of interest on shareholders’ equity.  The outstanding balance of R$113.8 million as dividends in the form of interest on shareholders’ equity 
that we owed to the State was netted against accounts overdue after February 2004.  The first amendment did not amend the provisions of 
the December 2001 agreement regarding the supplemental retirement and pension benefits we paid from March 1986 to November 2001 on 
behalf of the State to former employees of the State-owned companies. 

On December 28, 2007, we and the State entered into a second amendment to the December 2001 agreement, pursuant to which the 
State agreed to pay (i) the outstanding balance under the first amendment, in the amount of R$133.7 million (as of November 30, 2007), in 
60 consecutive monthly installments, beginning on January 2, 2008, and (ii) the amount of R$236.1 million relating to part of the accounts 
overdue and unpaid from March 2004 through October 2007 regarding the provision of water supply and sewage collection services.  As 
part of this amendment, we agreed to pay during the period from January through March 2008 the outstanding balance of dividends in the 
amount of R$400.8 million, in the form of interest on shareholders’ equity, due from March 2004 through December 2006.  We paid these 
amounts as agreed.  Under the second amendment, dividends payable by us are no longer required to be applied to offset accounts 
receivable from the State, and as a result, we are currently unable to determine the amount, if any, of the declared dividends that the State 
will apply to current and future accounts receivable owed to us by the State or its entities.  In addition, pursuant to the second amendment, 
we and the State agreed on complying with certain mutual obligations relating (i) to the improvement of payment processes and budget 
management procedures; (ii) the rationalization of the use of water and the amount of water and sewage bills under the responsibility of the 
State; (iii) the recording of government entities with accounts overdue in a delinquency system or reference file; and (iv) the possibility of 
interrupting water supply to these entities in case of non-payment of water and sewage bills.  Finally, this second amendment did not 
amend the provisions of the December 2001 agreement regarding the supplemental retirement and pension benefits we paid from 
March 1986 through November 2001 on behalf of the State to former employees of the State-owned companies that merged to form our 
Company. 

In 2007, we received payment installments from the State in the amount of R$326.0 million.  As of December 31, 2007, our dividends 

payable to the State, due from 2004 through 2007, were in the amount of R$552.0 million.  We are currently unable to determine the 
amount, if any, of the declared dividends that the State will apply to current and future accounts receivable owed to us by the State or its 
entities.  The second amendment no longer requires that dividends be applied to offset accounts receivable from the State.  

On March 26, 2008, we entered into a commitment agreement (termo de compromisso) with the State with the purpose of finding an 
alternate solution to the deadlock related to the amount owed by the State to us in connection with the supplemental retirement and pension 
benefits we paid from March 1986 to November 2001 on behalf of the State to former employees of the State-owned companies which 
merged to form our Company.  In this agreement, we and State committed to hiring specialized companies to carry out new valuations of 
the amounts owed to us by the State and of the reservoirs.  An independent consulting firm, FIPECAFI, has been retained to resolve the 
disagreement and validate the amount we paid from March 1986 through November 2001 on behalf of the State to former employees of the 
State-owned companies that merged to form our Company, which the State has not yet agreed to reimburse us hereinafter referred to as the 
“Disputed Reimbursement Amount”.  In addition, FIPECAFI is performing, together with another independent consulting firm, a new 
evaluation of the reservoirs that might be transferred to us as amortization of the reimbursement payable by the State to us.  

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On November 17, 2008, we, the State and DAEE entered into a third amendment to the December 2001 agreement, pursuant to which 

the State recognized a debt balance payable to us totaling R$915.3 million, hereinafter referred to as the “Undisputed Reimbursement 
Amount,” as adjusted based on the IPCA.  We accepted on a provisional basis the reservoirs as part of the payment of the Undisputed 
Reimbursement Amount and offered to the State a provisional settlement, recognizing a credit totaling R$696.3 million, corresponding to 
the value of the reservoirs located in the Alto Tietê region.  We and the State have agreed that the final offset will only be recorded when 
the effective transfer of the reservoirs is recorded at the Real Estate Registry.  The outstanding balance of Undisputed Reimbursement 
Amount, amounting to R$219.0 million, is being paid by the State in 114 consecutive monthly installments, as adjusted by the annual 
IPCA variation, plus interest accruing at the annual rate of 6.0%.  The first installment was paid in November 2008. 

In addition to the Undisputed Reimbursement Amount, there is an outstanding balance relating to the Disputed Reimbursement 

Amount.  As of December 31, 2010, the Disputed Reimbursement Amount amounted to R$1,230.1 million, but due to the uncertainty 
regarding the recovery of the amount our management decided not to recognize the reimbursements.  See Note 8 to our consolidated 
financial statements as of and for the year ended December 31, 2010 regarding the Disputed Reimbursement Amount.  We and the State 
have agreed that the dispute relating to the Disputed Reimbursement Amount will not prevent us from carrying out the commitments made 
in the December 2001 agreement.  We are working with the State government to obtain legislative authorization to transfer the reservoirs to 
us. 

In addition, the third amendment to the December 2001 agreement provides for the regularization of the monthly flow of benefits.  

While we are liable for the monthly flow of benefits to the former employees of the state-owned companies that merged to form our 
Company, the State shall reimburse us based on criteria identical to those applied when determining the Undisputed Reimbursement 
Amount.  Should there be no preventive court decision, the State will assume the flow of monthly payment of benefits portion deemed as 
undisputed. 

Finally, the third amendment to the December 2001 agreement established that the Public Attorney’s Office of the State of São Paulo, 

or the Public Attorney’s Office, would issue a revised interpretation of the calculation and eligibility criteria applicable to the Disputed 
Reimbursement Amount.  At that time, we believed that the Public Attorney’s Office would issue a revised interpretation which would 
have helped us bring the negotiations with the State to a conclusion.  However, contrary to our expectations, the Public Attorney’s Office 
recent interpretation of the calculation and eligibility criteria applicable to the Disputed Reimbursement Amount refuted the reimbursement 
of the largest portion of this amount.  As of December 31, 2010, we had made a provision of R$1,316.7 million in our pension obligations 
accounts in respect of the Disputed Reimbursement Amount. 

Even though the negotiations with the State are still progressing, we cannot assure you that we will recover the receivables related to 

the Disputed Reimbursement Amount. 

We will not waive the receivables from the State to which we consider ourselves to be legally entitled. Accordingly, we will take all 
possible actions to resolve the issue at all administrative and court levels. Should this conflict persist, we will take all the necessary actions 
to protect our interests.  On March 24, 2010, we sent to the controlling shareholder the official letter approved by our executive committee, 
proposing that the matter be discussed at the BM&FBOVESPA Arbitration Chamber.  In June 2010, we sent a settlement proposal to the 
Secretary of Treasury, which was denied, and (iii) on November 9, 2010, we filed a civil lawsuit against the State of São Paulo seeking full 
reimbursement of the amounts paid as benefits granted by Law No. 4,819/58.  Regardless of the civil lawsuit, we will continue to actively 
seek a settlement with the State government. 

Agreement with the State and the city of São Paulo 

On June 23, 2010 the State and the city of São Paulo entered into a convention (convênio) with the intermediation and consent of our 

Company and of the ARSESP pursuant to which they agreed to jointly manage the planning of and investment in the basic sanitation 
system of the city of São Paulo, among other things.  This agreement established that the State and the city of São Paulo would enter into 
an agreement with us, granting us exclusive rights in the provision of water and sewage services in the city of São Paulo.  In addition, the 
agreement established the role of the ARSESP in regulating and overseeing our activities, and established a management committee that 
will be responsible for planning the water and sewage services and for reviewing our investment plans.  The management committee is 
composed of six members appointed for renewable two-year terms.  The State and the city of São Paulo have the right to appoint three 
members each.  We are permitted to participate in the meetings of the management committee, but we are not afforded any voting rights.  

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On June 23, 2010, we entered into a formal agreement with the State and the city of São Paulo to regulate the provision of water and 
sewage services in the city of São Paulo for a 30-year period, which may be extended for an additional 30-year period.  Municipal Law No. 
14,934/2009 authorized the city of São Paulo to enter into an agreement with us.  The agreement establishes, among other things, how 
specific amounts of gross revenues from the services we render should be allocated (after deduction of COFINS and PASEP).  Pursuant to 
the agreement, we are required to (i) invest at least 13.0% of the gross revenues we obtain from this agreement in the improvement of water 
and sewage infrastructure in the city of São Paulo; and (ii) contribute 7.5% of the gross revenues we obtain from this agreement to the São 
Paulo Municipal Sanitation Fund.  In addition, the agreement provides that the ARSESP, the State agency responsible for regulating the 
basic sanitation industry, will ensure that the tariffs charged (a) will adequately compensate us for the services we provide and (b) can be 
adjusted to restore the original balance between each party’s obligation and economic gain (equilíbrio econômico-financeiro).  See “Item 
4.B. Business Overview—Our Operation—Operations in the City of São Paulo and Certain Metropolitan Regions.” 

Dividends 

We regularly pay dividends to our shareholders, including the State of São Paulo.  In the past, we have withheld part of the dividends 

to which the State was entitled in order to offset it against our pending receivables from the State. 

In accordance with our agreements with the State, we do not anticipate that we will withhold dividends to which the State was entitled 

in order to offset it against our pending receivables from the State in the near future. 

Cash and Cash Equivalents 

Our cash and cash equivalents invested with State financial institutions in short-term securities amounted to R$722.2 million and 
R$1,945.7 million, as of December 31, 2009 and 2010, respectively.  Interest income from these investments totaled R$74.2 million in 
2009 and R$137.7 million in 2010. 

Government Guarantees of Financing 

In some situations, the federal government, the State or government agencies guarantee our performance under debt- and project-

related agreements. 

The State has also guaranteed a portion of our repayment obligations under loan agreements that we entered into with the federal 

government in 1994 through its financial agent, Banco do Brasil S.A. which totaled R$1,134.9 million as of December 31, 2010.  
Furthermore, the federal government has guaranteed, and the State has provided a counter-guarantee, in respect of the financial agreement 
we entered into with the IADB in 1992 and 2000 for the total original aggregate amount of US$650.0 million related to the financing of the 
Tietê River recovery project to reduce pollution.  See “Item 5.B. Liquidity and Capital Resources—Capital Sources—Indebtedness 
Financing.” 

On August 6, 2004, we entered into a credit agreement with the JICA for the financing of the Clean Wave Program for the Baixada 
Santista metropolitan region, which was guaranteed by the federal government, with counter-guarantee from the State of São Paulo, for an 
aggregate principal amount of R$337.7 million.  

In addition, we are currently negotiating with Caixa for additional loans to finance portions of our capital expenditure program. 

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Use of State-Owned Reservoirs 

We currently use the Guarapiranga and Billings reservoirs which are owned by another company controlled by the State, based on a 

grant issued by the DAEE.  We do not pay any fees with respect to the use of these reservoirs.  We are, however, responsible for 
maintaining them and funding their operating costs.  The State incurs no operating costs on our behalf.  If these facilities were not available 
for our use, we would have to obtain water from more distant sources, which would be more costly. 

Agreements with Lower Tariffs 

We have entered into agreements with public entities, including State entities and municipalities, which manage approximately 6,400 

properties.  Under these agreements, these public entities pay a different tariff which is approximately 25.0% lower than the tariff that 
applies for the public entities that have not entered into these agreements, provided such entities implement our PURA program for the 
rational use of water, which includes a reduction of at least 10.0% in water consumption.  These agreements are valid for a 12-month term 
with automatic renewal for equal periods.  Pursuant to the terms of these agreements, if these entities fail to make any payment on a timely 
basis to us, we have the right to cancel the agreement, thereby revoking the 25.0% tariff reduction. 

Personnel Assignment Agreement among Entities Related to the State Government 

We have personnel assignment agreements with entities related to the State Government, under which the expenses are fully passed on 

and monetarily reimbursed.  The expenses related to personnel assigned by us to other state government entities in 2009 and 2010 
amounted to R$5.4 million and R$5.6 million, respectively. 

The expenses related to personnel assigned by other entities to us totaled R$0.3 million in 2009 and 2010. 

Services Obtained from State Government Entities 

As of December 31, 2010, we had an outstanding amount payable of R$11.4 million for services rendered by São Paulo State 

government entities, including the supply of electric power by CESP. 

Non-operating Assets 

We lend land, free of charge, to associations, support entities, non-governmental organizations and to DAEE, among others.  Such 
non-operating assets totaled R$25.4 million and R$26.5 million as of December 31, 2010 and 2009, of which R$2.3 million was lent to 
DAEE, as of December 31, 2008 and 2009, respectively. 

Banco do Brasil 

We filed a lawsuit against the Department of Finance of the State São Paulo seeking financial compensation related to the transfer of 
our exclusive rights in bank services.  On March 27, 2007, the State of São Paulo transferred our exclusive rights related to bank services to 
Banco Nossa Caixa.  The exclusive rights were granted to companies that are directly or indirectly managed by the state.  On May 27, 
2010, the State once more transferred these exclusive rights to Banco do Brasil.  Through this lawsuit we are seeking to obtain a percentage 
of the amounts the financial institutions paid to the State. 

Transactions with SABESPREV Pension Fund 

SABESPREV is the funded pension plan that we established to provide our employees with retirement and pension benefits.  The 

assets of SABESPREV are independently held, but we nominate 50.0% of the directors of SABESPREV, including the chairman of the 
board, who has the deciding vote pursuant to the applicable legislation.  Both we and our employees make contributions to the pension 
plan.  We contributed R$12.9 million and R$13.8 million in 2009 and 2010, respectively.  On May 29, 2001, a federal law was enacted 
which, among other provisions, limits the amount mixed capital companies, like us, may contribute to their pension plans.  Specifically, the 
ordinary contributions made by us to our pension plans may not exceed the contributions made by the beneficiaries of these plans.  Studies 
have been undertaken in order to cure the deficit with respect to the current plan and transform it into a defined contribution plan. 

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Compensation of Management 

The compensation paid by us to the members of our board of directors, board of executive officers and fiscal committee amounted to 
R$2.9 million in 2009 and 2010.  An additional amount of R$0.8 million, related to the bonus program, was accrued in 2009 and 2010.   

For further information on management compensation, see “Item 6.B. Compensation.” 

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C.    Interests of Experts and Counse 

Not applicable. 

ITEM 8.        FINANCIAL INFORMATION 
A.    Consolidated Statements and Other Financial Information 

See “Item 3.A. Selected Financial Data” and “Item 18. Financial Statements.” 

Legal Proceedings 

In the ordinary course of our business, we are a party to judicial and administrative proceedings relating to civil, environmental, labor 
and tax matters.  As of December 31, 2010, we estimated that these legal proceedings totaled approximately R$23,960.1 million (excluding 
the amount of R$131.8 million related to court deposits).  This amount was based on probable, possible and remote losses and on the value 
attributed to the lawsuit by the plaintiffs in some cases and on the economic value of the lawsuits in others.  Out of the total amount of 
contingencies as of December 31, 2010, approximately R$2,164.9 million relate to tariff-related legal proceedings and consumers claims, 
approximately  R$1,000.2  million  relate  to  contractors’  claims,  approximately  R$924.2  million  relate  to  tax  proceedings,  approximately 
R$406.2  million  relate  to  labor  proceedings,  approximately  R$18,805.6  million  relate  to  civil  public  actions  related  to  environmental 
matters and approximately R$659.0 million relate to other civil matters.  As of December 31, 2010, the provision for legal contingencies 
totaled R$1,459.8 million (excluding the amount of R$120.2 million related to court deposits), of which R$770.2 million relate to tariff-
related legal proceedings and consumers claims, R$372.9 million relate to contractors’ claims, R$58.7 million relate to tax proceedings, 
R$137.2  million  relate  to  labor  proceedings,  R$65.1  million  relate  to  civil  public  actions  related  to  environmental  matters  and  R$175.9 
million relate to other civil matters.  

The table below sets forth, as of December 31, 2010, our estimated contingencies with respect to legal proceedings, categorized by 

potential risk of loss: 

Expected probable loss 
Expected possible loss 
Expected remote loss 
Total 

Total Value 
(in thousands of reais)  
1,459.8 
2,297.9 
20,202.4 
23,960.1 

The  difference  between  the  provisioned  amount  and  the  total  amount  of  the  contingencies  derives  from  the  methodology  for 
establishing our provisions.  This methodology takes into account:  (i) the probability of loss of each lawsuit, based on the alleged facts, the 
claim based on the factual circumstances vis-à-vis the law, as well as prevailing precedents in similar cases; and (ii) the calculation of the 
provisioned  amounts,  which  requires  significant  judgment  and  in  certain  circumstances,  given  the nature of  the  claim,  we  are  unable  to 
estimate with accuracy our liability exposure.  In these cases, we have taken into account the value attributed to the lawsuits by the plaintiff 
and legal opinions of counsel in charge of each lawsuit.  Once the methodology is applied, as a general rule, we make the provisions only 
for the lawsuits that are considered as probable losses. 

We  cannot  give  any  assurances  either  as  to  the  sufficiency  of  the  provisioned  amount  to  cover  the  contingencies  or  as  to  the  total 
amount  of  potential  liabilities  that  we  may  incur  or  penalties  that  may  be  imposed.   We  may  not  obtain  a  favorable  outcome  in  the 
administrative  or  court  proceedings  to  which  we  are  a  party.   In  addition,  the  total  amount  of  the  contingencies,  based  on  the  value 
attributed to the lawsuit by the plaintiff, may not correspond to the economic value of the lawsuits, which may be substantially higher than 
the total estimated amount of contingencies. If the economic outcome of these lawsuits is higher than the amount attributed to the lawsuit 
by the plaintiff or, in the event the total amount of our provisions are not sufficient to pay the contingencies due, we could incur greater 
costs  than  those  that  were  originally  estimated.  If  these  costs  are  significant,  our  results  of  operations  and  financial  condition  could  be 
negatively affected. See “Item 3.D. Risk Factors—Risks Relating to Our Business—Any substantial monetary judgment against us in legal 
proceedings may have a material adverse effect on us.” 

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Civil Public Actions Related to Environmental Matters 

We have been sued by the Public Prosecution Office of the State of São Paulo (Ministério Público do Estado de São Paulo), by some 
municipalities and by some non-governmental organizations in a number of environmental civil public actions:  (i) seeking that we cease 
releasing raw sewage into certain local water courses; (ii) in some cases seeking remedies for environmental damages, which have not yet 
been  specified  and  evaluated  by  the  court’s  technical  experts;  and  (iii)  seeking  to  require  us  to  install  and  operate  sewage  treatment 
facilities  in  the  locations  referred  to  in  the  civil  public  actions.  In  each  case,  we  are  subject  to  daily  fines  for  non-compliance.   In  our 
response to these lawsuits we emphasize that the installation and operation of sewage treatment facilities in the locations referred to in the 
civil public actions is included in our investment plan and that the immediate cessation of the release of raw sewage into the relevant local 
water  courses  would  hinder  us  from  collecting  sewage,  a  primary  necessity,  in  those  locations,  causing  even  more  damage  to  the 
environment and public health.  There have already been unfavorable judicial decisions against us. The effects may include:  (i) investment 
in works or services not considered by the long-term investment plan; (ii) early execution of works or services that were considered for 
execution  in  future  years  in  the  long-term  investment  plan;  (iii)  payments  related  to  environmental  indemnification;  and  (iv)  a  negative 
impact on our image in national and international markets and in public bodies. 

Although we are not able to predict the final outcome of these lawsuits, we believe that the outcome, if unfavorable to us, may have a 

material adverse effect on us. 

The civil public lawsuits related to environmental matters to which we are party include the following: 

•                The  Public  Prosecution  Office  of  the  State  of  São  Paulo  has  brought  a  civil  public  action  requesting  remedies  due  to 
environmental damage caused by the release of sludge from the Rio Grande water treatment facilities into certain receiving waters 
and  the  Billings  reservoir  and  seeking  the  immediate  cessation  of  this  activity  and  the  implementation  of  an  environmental 
recovery project.  The Trial Court ruled in our favor, and there was a subsequent appeal against this decision.  In May 2006, the 
appellate court ruled against us and ordered us to cease the release of sludge within a year from the final ruling.  The court also 
determined that the environmental recovery must be carried out within two years of the date of the ruling, under the penalty of a 
daily fine of R$10,000 to compensate for environmental damage.  We appealed from this decision and the court decided against 
us.  Because we are trying to reach a settlement on this civil public action, the action is currently suspended.  As of December 31, 
2010, we had provisioned R$1.2 million for this lawsuit. 

•               A public civil action filed by the Public Prosecution Office of the State of São Paulo against us and the Cotia Mayor’s Office 
seeking individual and joint adverse judgments against the defendants and requesting:  (i) the permanent cessation of the release 
of untreated water effluents into the Cotia River or its tributaries, subject to a daily fine in the case of non-compliance; (ii) the 
treatment of sewage prior to its release into the Cotia River, under the penalty of a daily fine in the event of non-compliance; (iii) 
the full restoration of soil, of surface and underground water bodies and of vegetation to their original condition, under the penalty 
of a daily fine in the event of non-compliance; (iv) the payment of compensation for environmental damage caused to soil, water 
sources and underground and surface water bodies that cannot be recovered. The appellate court rendered decisions favorable to 
us  with  respect  to  items (i),  (iii) and  (iv)  mentioned  above.   According  to  evaluations  by  the  court’s  technical  expert,  as  of 
October 17,  2006,  compensation  for  environmental  damages  was  R$826,800  or  R$5.8  million  if  damage  caused  to  the 
neighboring Cotia River is included.  This amount is under discussion, and its approval is subject to a final decision by the court 
of  first  instance.   Our  legal  counsel  assessed  the  risk  of  loss  as  probable.   In  December 2010,  the  court’s  technical  expert’s 
evaluation for the compensation was adjusted to R$10.7 million.  The lawsuit is currently being enforced against us. We are in 
negotiation with the Public Prosecution Office of the State of São Paulo to settle this lawsuit. 

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•               In 2003, the Piracicaba Civil Entities Coordination Board filed a public civil action against us, the ANA and the Government 
of the State of São Paulo, seeking remedy for damage caused by the use of the Piracicaba, Jundiaí and Capivari river basins to 
supply the São Paulo metropolitan region through the Cantareira Water System for nearly 30 years.  The value attributed to the 
claim was R$11.4 billion on December 10, 2003, and later adjusted to R$17.8 billion as of December 31, 2010.  This lawsuit is in 
its initial stage and is pending judgment from the trial court.  So far no value has been set for the damages alleged.  Our legal 
counsel assessed the risk of loss as remote.  No provision has been made for this lawsuit. 

•               The Public Prosecution Office of the State of São Paulo has filed a public civil action against us, AES Eletropaulo, DAEE, 
CETESB and the State Secretariat of Treasury seeking a joint condemnation for alleged environmental damage caused by the 
reversal of the Pinheiros River into the Billings Dam.  A Trial Court found the defendants guilty and, based on an expert’s report 
which estimated the amount of damages, ruled that the defendants jointly pay R$284.5 million in damages.  As of December 31, 
2010, the amount of damages totaled R$582.4 million, after monetary adjustment.  We, DAEE, AES Eletropaulo, CETESB and 
the State Treasury Department have filed an appeal against the ruling at the appellate court.  The appellate court ruled in our favor, 
and the plaintiff appealed from this decision.  We are currently awaiting the decision on the plaintiff’s appeal.  Our legal counsel 
assessed the risk of loss as remote.  No provision has been made for this lawsuit. 

•               The Public Prosecution Office of the State of São Paulo has filed a civil public action against us seeking (i) that we cease 

releasing untreated sewage into receiving waters and into the soil; (ii) that we implement a sewage system in the municipality of 
Vargem Grande Paulista and the necessary infrastructure for the sewage treatment; and (iii) indemnification for irreversible 
damages caused to the environment and public health, subject to daily fines.  The trial court ruled partially against us, and we 
appealed unsuccessfully.  We filed another appeal which was decided against us and we are currently awaiting the decision on our 
appeal from this decision.  Our legal counsel assessed the risk of loss as probable.  The value attributed to the lawsuit was R$3.0 
million as of November 20, 2007, and later adjusted to R$3.6 million as of December 31, 2010. 

•               The Public Prosecution Office of the State of São Paulo filed a civil public action against us and the Piracaia Mayor’s Office 
seeking that we cease to release untreated residential sewage in the Atibaia River or be subject to specific performance or a daily 
fine.  The value attributed to the lawsuit was R$3.5 million as of July 11, 1996, and later adjusted to R$9.6 million as of 
December 31, 2010. This lawsuit is in its initial stage, pending judgment from the trial court.  Our legal counsel assessed the risk 
of loss as possible. No provision has been made for this lawsuit. 

•               The Public Prosecution Office of the State of São Paulo filed a civil public action against us seeking that we (i) cease to release 
untreated sewage effluents into the Capivari river in the municipality of Campos do Jordão within 540 days from the filing of the 
lawsuit, subject to a daily fine of R$100,000; and (ii) fully restore the environmental damage or indemnify the State for such 
damages if restoration is not viable.  The court of first instance ruled against us, and we appealed. The appellate court also ruled 
against us, but reduced the daily fine to R$10,000. We have appealed the appellate court’s ruling and are currently waiting for a 
ruling on our appeal.  Our legal counsel assessed the risk of loss as probable.  As of December 31, 2010, the fine due was R$10.9 
million, and we have provisioned this amount. 

•               On April 12, 2005, the Federal Public Prosecution Office and the Federal Government sued us and the Santos Mayor’s Office 
requesting (i) the full restoration of the area where the outlet pipes were built to its original condition, with appropriate technical 
safeguards, and the conservation of the remaining trees; (ii) the maintenance of the area in a condition that is adequate for its use 
for the population; (iii) that an environmental license be obtained before any modification to the sewage outlet pipes, with the 
requirement that the license and an obligatory environmental impact study and report (Estudo Prévio de Impacto Ambiental e 
Relatório de Impacto Ambiental, or EIA-RIMA, be submitted for approval to the appropriate federal authorities; and (iv) the 
restoration of the area to the condition it was in prior to the construction of the sewage outlet pipe platform, provided this is 
determined to be feasible pursuant to the EIA-RIMA. The trial court ruled in our favor, but the Federal Public Prosecution Office 
and the Federal Government appealed the decision.  We have submitted additional evidence for consideration, and we are waiting 
for the decision of the Regional Federal Court.  Our legal counsel has assessed the risk of loss as possible. The value attributed to 
the lawsuit was R$1.9 million as of December 31, 2010. No provision has been made for this lawsuit. 

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•               On October 19, 2009, the Public Prosecution Office of the State of São Paulo filed a civil public action against us and the 

municipality of Itatiba seeking that we (i) cease releasing untreated sewage in Itatiba or be subject to a daily fine of R$10,000; (ii) 
fully restore within one year the soil, the surface and underground water bodies and vegetation to their original condition, or be 
subject to a daily fine of R$10,000 in the event of non compliance; (iii) indemnify the State for damages when restoration is not 
viable; and (iv) indemnify the State in an amount not less than R$2.0 million for moral damages.  This lawsuit is in its initial stage 
and is pending judgment from the trial court.  As of December 31, 2010, the value attributed to this lawsuit was R$29,598.  Our 
legal counsel assessed the risk of loss as possible.  No provision has been made for this lawsuit. 

•               On August 8, 2008, the Public Prosecution Office of the State of São Paulo won a civil public action against us requiring us, 

within a maximum of three years, to treat all domestic sewage in Águas de Santa Bárbara before releasing it into any waterway, or 
be subject to a daily fine of R$1,000, as from August 8, 2008 for a maximum period of 18 months.  We appealed and are waiting 
the appeal court’s judgment.  The lawsuit is currently suspended due to settlement discussions.  The decision remains in effect 
pending our appeal. In April 2010, the Public Prosecution Office began provisional enforcement of the fine.  Our legal counsel has 
assessed the risk of loss as probable.  As of December 31, 2010, the fine due was R$1.1 million and we had provisioned the same 
amount in respect of this lawsuit. 

•               A civil public action was brought against us by the Public Prosecution Office of the State of São Paulo.  We appealed an 
unfavorable decision of the trial court, and the appeal court ruled against us, requiring us (i) to cease to release any untreated 
sewage into the river system in the Guareí region, or be subject to a fine of R$150,000 for each violation; (ii) to invest as 
necessary in the municipality of Guareí’s water treatment and sewage system so as to complete within 180 days all works 
necessary for sewage treatment, or be subject to a daily fine of R$100,000; (iii) to pay an indemnity in respect of all damage 
caused to the environment and to clean up any such damage in settlement of the judgment. The judgment was not clear as to the 
fines imposed and this led to an appeal, which the court refused in May 2010.  After the appeal court ruled against us, we applied 
to have this lawsuit heard by the State of São Paulo Court of Special and Extraordinary Measures (Recursos Especial e 
Extraordinário pelo Tribunal de Justiça do Estado de São Paulo), and that court is currently considering whether to hear the 
case.  Our legal counsel assessed the risk of loss as probable.  As of December 31, 2010, the value attributed to this lawsuit was 
R$4.4 million, based on the settlement offered by the State Public Prosecution Office in July 2010, and we have provisioned 
R$4.4 million in respect of this lawsuit. 

•               The Public Prosecution Office of the State of São Paulo filed a civil public action against us, requiring us (i) to cease to release 
any untreated sewage from the Araça pre-treatment plant (Estação de Pré Condicionamento), or EPC, into the São Sebastião canal 
without obtaining the necessary environmental licenses, or be subject to a daily fine of R$100,000; (ii) to obtain and maintain the 
necessary environmental license to operate the Araça EPC, or be subject to a daily fine of R$100,000; (iii) to release into the São 
Sebastião canal only domestic sewage that complies with legal guidelines; (iv) to comply with all of the technical requirements set 
out in the environmental license, as well as the requirements specified following inspections by the CETESB; and (v) to pay an 
indemnity of R$50.0 million for environmental damage. The preliminary judgment was deferred, and SABESP was required (i) to 
present to the court within six months the environmental license for the Araça EPC, or be subject to a daily fine of R$100,000, and 
(ii) to present to the court within 30 days a contract with a company to carry out an independent technical study with monthly 
reporting to monitor and collect samples from the areas of São Sebastião canal where there are underwater outlets from the Araça 
EPC, as well as from the beaches and mangroves within 8 km to the north of south of the Araça EPC. The sediment samples from 
the mangroves were required to be analyzed for the existence of faecal coliforms as well as water quality.  This lawsuit is in its 
initial stage and is pending judgment from the court of first instance. Our legal counsel has assessed the risk of loss as possible.  
The value attributed to the lawsuit as of December 31, 2010 was R$78.1 million.  No provision has been made for this lawsuit.  

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•               The municipality of Águas de São Pedro filed a civil public action against us on September 14, 2004, with a request for 

summary judgment or the imposition of a daily fine.  This lawsuit aims to require us to undertake works and services necessary to 
remove the direct discharge of sewage beside the green areas and the Pantanal source and lake that are located close to Rua dos 
Pinheiros, in the Bairro Jardim Iporanga district of the municipality of Águas de São Pedro.  It also aims to require us to pay 
indemnities for alleged damage caused to the environment, to health and to citizen’s property.  On June 26, 2006, the court of first 
instance ruled that the claim was without merit.  However, on September 22, 2009, the appeals court ruled that the claim was 
proven and granted an injunction, ordering us to comply with the requirement to clean up the environmental damage within 180 
days in satisfaction of the judgment, and imposing a daily fine of R$5,000.  We appealed from this decision, and the court decided 
against us.  We filed another appeal from this decision and are currently awaiting its decision.  Our legal counsel has assessed the 
risk of loss as probable.  The value attributed to this lawsuit as of December 31, 2010 was R$14.0 million, and we have recorded 
provisions in this amount as of that date.  Currently, we are awaiting the response from the State of São Paulo Court of Special 
and Extraordinary Measures (Recursos Especial e Extraordinário pelo Tribunal de Justiça do Estado de São Paulo) in relation to 
this lawsuit. 

We are currently involved in other environmental lawsuits and administrative proceedings against the release of untreated sewage in 

the municipalities, which have been evaluated as probable and possible losses.  The amounts provisioned may not always represent the 
final amount to be paid as compensation for the alleged damages, in view of the current status of the lawsuits and since our management 
cannot reasonably estimate the amounts of future disbursements.  As of December 31, 2010, the total amount provisioned was R$65.1 
million. 

Labor Proceedings 

We are party to labor proceedings, mainly regarding unpaid overtime, health and safety conditions in the workplace, among others.  
We make provisions for part or the entire amounts involved in the proceedings.  For those cases in which the probability of loss is assessed 
as probable, we provision the full amounts being discussed. 

As of December 31, 2010, we were party to approximately 4,990 labor proceedings and one public civil action filed by some of our 
current and former employees.  Some of these lawsuits seek to negotiate certain benefits granted by Law No. 4,819 of August 26, 1958.  
Approximately 40 plaintiffs are claiming the same benefits in the civil court and in these cases.  Our position in these lawsuits is that the 
State government, and not us, should be responsible for the payments due to the plaintiffs.  In the public civil action filed against us and the 
State Treasury, a temporary injunction was granted in the trial court requiring us to pay the benefits set forth in Law No. 4,819/58 to all the 
plaintiffs.  A trial court ruled on April 5, 2005, granting the relief sought under this proceeding and confirming the temporary injunction 
requiring us to continue to pay the benefits.  We have appealed this decision.  There are currently other pending individual lawsuits 
discussing the same claims, and up to the date of this report neither we nor the State government had reached an agreement as to the 
indemnification amounts related to these proceedings. 

In order to continue to seek reimbursement of the amounts related to the payment of retirement benefits and pensions paid by us that 
our management understands is in fact owed by the State government, we have taken the following measures:  (i) on March 24, 2010, we 
sent a letter to our controlling shareholder in an attempt to start an arbitration proceeding before the BM&FBOVESPA arbitration chamber, 
(ii) In June 2010, we sent a settlement proposal to the Secretary of Treasury, which was denied, and (iii) on November 9, 2010, we filed a 
civil lawsuit against the State of São Paulo seeking full reimbursement of the amounts paid as benefits granted by Law No. 4,819/58.  
Regardless of the civil lawsuit, we will continue to actively seek a settlement with the State government. 

As of December 31, 2010, the total amount in controversy in the labor proceedings was R$265.0 million for risks considered as 
probable and possible losses.  We have established a provision of R$137.2 million as of December 31, 2010 for these contingencies, 
including the lawsuits described in the preceding paragraphs, based on calculations made by our legal and human resources departments. 

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Tax Proceedings 

Our tax proceedings and our contingency reserves for tax proceedings refer mainly to tax collection suits resulting from different 
interpretations by us and the competent government authority with respect to the applicable law.  The tax proceedings to which we are 
party include the following: 

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•               We are challenging the city of São Paulo’s taxation of the use of public areas for the installation of water and sewage mains for 
the provision of public sanitation services.  The tax was originally established by municipal decree No. 38,139/99 and later 
replaced by municipal decree No. 40,532/2001 and finally by the municipal Law No. 13,614/2003.  On February 22, 2000, we 
filed a writ of mandamus requesting an injunction to challenge this tax.  This first lawsuit covers the taxation before the enactment 
of municipal Law No. 13,614/2003.  The trial court ruled partially in our favor, by prohibiting the requirement to pay the tax 
provided for in this law, and the appellate court confirmed that the tax was not due.  The city of São Paulo appealed this decision, 
and a final decision is pending.  On April 20, 2004, we filed a writ of mandamus challenging Law No. 13,614/2003.  We 
requested a temporary injunction against the collection of this tax, which was granted by the trial court.  The São Paulo city 
government appealed this decision, and an appellate court decision is still pending.  We cannot estimate the potential increase in 
our expenses should we have to pay this tax for the use of public areas for the installation of water and sewage mains for the 
provision of public sanitation services should we be required to pay such tax since 1999.  We have not provisioned for any type of 
potential expense deriving from this municipal tax. 

•               We filed a writ of mandamus challenging municipal law 13,476/2002.  Before the enactment of this law, we were exempted 
from the payment of the Brazilian Service Tax (Imposto Sobre Serviço), or ISS.  The trial court originally granted a preliminary 
injunction in our favor, suspending the levy of the tax, but later ruled against us.  In July 2005, we filed an appeal to maintain the 
injunction previously granted.  The final ruling has not yet been issued, but we believe that the outcome will be favorable to us. 

•               With respect to the ISS, the Secretariat of Treasury of the city of São Paulo drew up collection assessment notices on 

September 18, 2006, against which we filed a challenge and a subsequent administrative objection. Our challenge was partially 
accepted, but our administrative objection was not recognized.  As a result of irregularities in the administrative order that did not 
recognize our administrative objection, we filed a lawsuit requesting an injunction to suspend and ultimately annul the assessment 
notices.  The amount involved was estimated at R$70.0 million, and later adjusted to R$178.6 million, as of December 31, 2010.  
Based on the opinion of our legal counsel, our risk of loss is possible. 

•               We proposed to carry-over losses from previous years to offset an income tax liability of approximately R$56.1 million and a 

social contribution tax liability of approximately R$8.7 million.  These amounts refer to the period between January and 
April 2003.  In 2005, the Federal Revenue Service denied the set-off of approximately R$11.2 million related to income tax 
liability and R$0.7 million related to social contribution tax liability, totaling R$11.9 million, and allowed us to compensate the 
remaining portion.  We appealed this decision, and our request was partially granted.  As of December 31, 2010, we recorded a 
provision of R$1.1 million as a probable loss and R$6.2 million as a possible loss. 

•               In 2006, the Federal Revenue Service concluded that, for the year 2001, we had an income tax liability and social contribution 

tax liability totaling R$277.0 million (R$357.7 million, as adjusted as of December 31, 2010) and initiated administrative 
collection proceedings against us.  We filed an administrative objection to this collection proceeding.  Based on the opinion of our 
legal counsel, the risk of loss is remote with respect to approximately 90.0% of this amount and a possible risk of loss with respect 
to the remaining 10.0%. 

•               In 2008, the Federal Revenue Service denied six requests for compensation to offset income tax and social contribution tax 
liabilities.  We proposed to offset income tax and social contribution tax paid in excess against our tax liability.  The amount 
involved in these proceedings was R$40.9 million as of December 31, 2010.  Based on the opinion of our internal legal counsel, 
the risk of loss is possible.  

•               In November 2004, we filed a writ of mandamus against the municipality of Bragança Paulista regarding the imposition of a 
new tax for the use of public areas for the installation of water and sewage mains for the provision of public sanitation services.  
On February 16, 2005, we were granted a temporary injunction suspending the imposition of this tax and preventing the 
municipality from collecting any current or future amounts due in respect of this tax until a ruling is rendered by the trial court.  In 
June 2005, the trial court ruled in our favor by confirming the injunction.  In July 2005, the municipality of Bragança Paulista 
filed an appeal to the São Paulo appellate court, and the appellate court decision is still pending.  We have not made any 
provisions for this proceeding.  

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We cannot predict the outcome of any of these lawsuits, nor can we assure you that, in the event of an adverse decision, we will be 

able to pass on to our customers any increase in our deductions from gross revenue, operating expenses or other expenses.  See Item 3.D. 
Risk Factors—Risks Relating to Our Business—Any substantial monetary judgment against us in legal proceedings may have a material 
adverse effect on us.” 

Condemnation Proceedings 

We are party to a significant number of condemnation proceedings arising from the partial or total expropriation or use of private 
property for water mains, sewer lines and facilities.  Under Brazilian law, the State or the relevant municipality is entitled to condemn 
private property to the extent required for the construction, development or improvement of water and sewage systems operated by us.  
However, we are required to provide compensation to affected property owners based upon appraised fair market values.  Although we 
generally provide compensation to property owners on the basis of negotiated settlements, we are a party to many lawsuits related to 
compensation awards. 

As of December 31, 2010, the future disbursement was estimated at R$482.2 million, as to all proceedings regarding expropriation and 

easements.  These payments are made over the years, according to each court order or settlement.  After making each payment, we will 
obtain the title to the respective real property which will be recorded as an asset belonging to us after being expropriated.  We have not 
provisioned any amounts with regard to these proceedings. 

Concession-Related Legal Proceedings 

In December 1997, the municipality of Santos enacted a statute expropriating our water and sewage systems located in Santos. We 
filed a writ of mandamus requesting a temporary injunction against the expropriation, which was denied by the trial court. This decision 
was subsequently reversed by the appellate court, which then issued a temporary injunction suspending the effectiveness of the statute. By 
August 2, 2002, both the trial and appellate courts had ruled in our favor, but we are currently waiting for a final decision. 

On December 20, 2000, we brought an action against the municipality of Santos for payments due under the concession agreement.  
Both parties appealed the decision of the courts of first and second instance, and we are currently awaiting the decision of the higher appeal 
court. We continue to render water and sewage collection services in the municipality of Santos. 

On March 25, 2005, the municipality of Itapira approved a decree revoking our concession contract. In addition, a municipal law was 
enacted revoking an earlier law authorizing the municipality to enter into the contract with us. The municipality of Itapira has further filed 
a repossession lawsuit seeking to repossess all of the reversible assets, rights, and privileges transferred to us in connection with water and 
sewage collection services, and has obtained an injunction which was later confirmed by an appellate court decision.  We appealed this 
decision but we later decided to waive this appeal and filed a compensation lawsuit against the municipality of Itapira.  

The municipality of Tuiuti has filed a lawsuit seeking to recognize the inexistence of any judicial or legal grounds for us to provide 
water and sewage collection services in the municipality of Tuiuti, and to confirm the legality of the expropriation of these services by the 
municipality.  We filed an answer to the lawsuit requesting that the trial court (i) confirm the existence of a legal relationship between us 
and the municipality of Tuiuti; and (ii) award damages for the expropriation of our assets.  The trial court ruled against us but awarded us 
an indemnity of R$541,000, to be updated since March 2006.  Both parties appealed this decision, and the court decided partially in our 
favor increasing the amount related to damages to R$1.1 million.  We are not currently operating in the municipality of Tuiuti. 

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The municipality of Cajobi has filed a repossession lawsuit. This lawsuit requests the repossession of water and sewage collection 
services due to the termination of the concession agreement on November 13, 2006, and an indemnity for all amounts paid to us for water 
and sewage collection services after November 2006, as well as payments for the use of all the reversible assets, rights and privileges 
transferred to us in the concession agreement.  The municipality has been rendering the water and sewage collection services since May 29, 
2007, based on a judgment by the court of first instance. The amounts involved in this lawsuit are still being evaluated in the judicial 
proceedings. 

The municipality of Araçoiaba da Serra has filed a repossession lawsuit requesting the repossession of water and sewage collection 
services due to the termination of the concession agreement entered into with us and an indemnity for all amounts paid to us for water and 
sewage collection services after the termination on September 23, 2006, as well as payment for the use of all the reversible assets, rights 
and privileges transferred to us in the concession agreement.  A temporary injunction was granted by the appellate court in favor of the 
municipality of Araçoiaba da Serra and confirmed by the superior courts.  

We have filed a lawsuit to collect indemnities from the municipalities of Diadema e Mauá. These  indemnities result from the 

unilateral termination by these municipalities of the concession contracts entered with us in 1995. We have invested in the construction of 
water and sewage collection systems in these municipalities to render the contracted services. As a result of the termination of these 
concession agreements, the municipalities started to directly render water and sewage collection services. 

With respect to the collection suit against the municipality of Diadema, in December 2007, the trial court ruled in our favor. The 

municipality appealed from the decision to the appellate court, and the appellate court decision is still pending. In December 2008, we 
entered into an agreement with the municipality of Diadema to negotiate the repossession of the water and sewage collection services by us 
and to also negotiate the indemnity being disputed before the courts.  

With respect to the collection suit against the municipality of Mauá, the trial court ruled in our favor, ordering the municipality to pay 
us R$153.2 million as compensation for our losses.  The municipality appealed this decision to the appellate court, which upheld the trial 
court’s decision in August 2008.  This decision is not yet final as the municipality has the right to appeal.  

We have recorded the indemnities to be received from the municipalities of Diadema and Mauá as non-current assets representing 

long-term receivables.  As of December 31, 2010, this amount totaled R$146.2 million. 

Following the expiry of our concession contract with the municipality of Iperó, the municipality filed a repossession lawsuit requesting 

the repossession of assets relating to water and sewage services.  In response, we filed a lawsuit on December 30, 2009 to maintain 
possession or to collect indemnities.  A temporary injunction was granted in our favor on January 5, 2010, but it was thereafter annulled by 
the court of first instance on January 6, 2010.  We filed an interlocutory appeal, but it was not accepted. Currently, this lawsuit is at the 
appeals stage with respect to the submissions by both parties. We also filed a precautionary early evidence order in the jurisdiction of the 
Secretariat of Treasury, which resulted in a summary judgment requiring the early presentation of evidence to establish what assets are 
related to the provision of the services rendered by SABESP in the municipality of Iperó. 

The municipality of Tarumã filed a lawsuit against us in July 2010 requesting an interim injunction requiring (i) the repossession of 

existing assets necessary for providing water and sewage collection, distribution and treatment services, and (ii) the presentation of 
documentation demonstrating current income and expenses in the municipality and invoices for services and goods purchased by us to 
provide services, in order to calculate the indemnity due under article 35, paragraph 4, of the Federal Concessions Law 8,987/95. The 
lawsuit requested (i) a search warrant if we did not provide the income and expenses information and invoices, (ii) the imposition of a daily 
fine against us and (iii) that the interim injunction be converted into a permanent order, with the declared assets remaining under the 
control of the municipality until the payment of the indemnity provided for under article 36 of the Federal Concessions Law. This lawsuit 
is in the discovery stage, and no definitive judgment has been rendered.  As a result of the interim injunction, we are not operating in the 
municipality of Tarumã. 

We filed an ordinary action against the municipality of President Prudente on January 12, 2001, seeking (i) a declaration in respect of 

its contractual right to continue to render the services under its concession agreement in the municipality until the formal legal rescission of 
the concession agreement and (ii) the payment of indemnities. The action also sought a declaration that the acts and threats of the 
municipality in connection with its planned expropriation were illegal and abusive.  A judgment has been handed down confirming our 
right to continue to render the services. The decision was appealed, and the decision of the appeal court is still pending. We continue to 
render services in the municipality of Presidente Prudente pursuant to State Decree No. 21,228/2010, which extended the term of the 
concession agreement with the municipality until November 29, 2011. 

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Tariff-Related Legal Proceedings and Consumer Claims 

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As of December 31, 2010, approximately 1,440 lawsuits had been brought by our commercial customers that claim that their tariff 

rates should be equal to those of another category of customers and, consequently, seek the reimbursement of the difference between the 
amounts we collected and those tariffs. We have obtained final decisions both in favor and against us in many of these lawsuits, and have 
provisioned R$659.2 million as of December 31, 2010 for those lawsuits for which we have determined that the risk of loss is probable. 

The Association of Distinguished Bars and Restaurants (Associação de Bares e Restaurantes Diferenciados) has initiated several 
lawsuits to challenge the 10.0% penalty fee we charge on late water and sewage payments. In several of these cases, trial courts have 
dismissed the lawsuits based on the plaintiffs’ lack of standing to initiate such a lawsuit. In other cases, the lawsuits were dismissed 
because a civil public action with respect to the same matter was already being heard in the civil courts of the State of São Paulo. In this 
civil public action, the civil courts ruled against us, and we have appealed the decision and a decision from the appellate court is still 
pending. Notwithstanding these legal proceedings, we have reduced to 2.0% the penalty fee we charge all of our customers on late bill 
payments. 

Contractors’ Claims 

Certain contractors have filed claims against us alleging damages and underpayment of inflation indexation adjustments, monetary 
losses incurred in connection with introduction of the real and economic instability of the contract, among other claims. These suits are 
being handled by different courts, and we have established provisions for them when the expectation of loss is considered probable.  As of 
December 31, 2010, we had recorded a provision of R$372.9 million for claims whose likelihood of loss is considered probable.  

Other Legal Proceedings 

We are a party to several civil lawsuits related to indemnities for property damage, pain and suffering, and loss of profits allegedly 

caused to third parties.  In the year ended December 31, 2010, there was an increase both in the number of lawsuits with probable and 
possible risk of loss, arising from the increase in lawsuits and the review of the expected outcomes, comprising monetary adjustment, 
interest and fees.  As of December 31, 2010, we had recorded a provision of R$175.9 million, for claims whose likelihood of loss is 
considered probable. 

The São Paulo State Public Attorney’s Office has filed a public civil action against us seeking (i) to ensure water supply in the 

municipality of Guarujá is within accepted levels of potability and in accordance with current legislation; (ii) to require us to start building 
a water treatment station; (iii) to require us to reimburse fees charged to consumers; and (iv) to require us to pay compensation for physical 
harm and pain and suffering caused by allegedly improper water consumption.  A temporary injunction was granted to the São Paulo State 
Public Attorney’s Office, and we appealed the decision.  Our appeal was rejected by the appellate court.  We have presented an answer to 
the complaint, and the lawsuit is currently in the discovery phase.  We have not yet estimated our potential liability with respect to this 
lawsuit because we currently do not have sufficient information to accurately do so.  We evaluated this proceeding as a possible loss.  

On October 29, 2003, the São Paulo State Public Attorney’s Office, on behalf of the people of the State of São Paulo, filed a civil 
public action in a trial court of the State of São Paulo alleging that a transfer to us of ownership of the Alto Tietê System reservoirs from 
the DAEE would be illegal.  In October 2004, the court of first instance handed down its judgment on the civil public action and declared 
the agreement between us, DAEE and the State of São Paulo null and void.  This decision was suspended and we, the State Treasury and 
DAEE appealed the decision. On August 23, 2010, the appeal was denied.  We have petitioned for clarification of the appeal court’s 
decision and will seek to take the case to the Supreme Court.  The effects of the appeal court’s decision will be suspended until the end of 
the legal process.  Our legal counsel has assessed the risk of loss as probable, which would prohibit the transfer of the reservoirs in 
payment of the accounts receivable due from the State. 

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We are a party to a substantial number of other legal proceedings, in addition to the lawsuits and administrative proceedings discussed 
above, in the ordinary course of our business.  These legal proceedings include personal injury and property damage cases, environmental 
proceedings, challenges to our ability to cease rendering water and sewage services upon default by our customers and a range of other 
matters.  We have not established provisions with respect to these other legal proceedings. 

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Dividends and Dividend Policy 

Amounts Available for Distribution 

At each annual shareholders’ meeting, the board of directors is required to recommend the allocation of net profits for the preceding 

fiscal year.  For purposes of Brazilian Corporate Law, net profits are defined as net income after income tax and social contribution tax for 
such fiscal year, net of any accumulated losses from prior fiscal years and any amounts allocated to employees’ and management’s 
participation in our profits.  In accordance with Brazilian Corporate Law, the amounts available for dividend distribution are the amounts 
equal to our net profits less any amounts allocated from such net profits to: 

•               the legal reserve; and 

•               retained earnings for investment reserve. 

We are required to maintain a legal reserve, to which we must allocate 5.0% of net profits for each fiscal year until the amount for such 

reserve equals 20.0% of our paid-in capital.  However, we are not required to make any allocations to our legal reserve in respect of any 
fiscal year in which the aggregate amount of the legal reserve plus our other established capital reserves exceeds 30.0% of our capital.  Net 
losses, if any, may be offset against the legal reserve.  As of December 31, 2010, the balance of our legal reserve was R$460.0 million, 
which was equal to 7.5% of our capital. 

Brazilian Corporate Law also provides for two discretionary allocations of net profits that are subject to approval by the shareholders 

at each annual shareholders’ meeting.  First, a percentage of net profits may be allocated to a contingency reserve for anticipated losses that 
are deemed probable in future years.  Any amount so allocated in a prior year must be either reversed in the fiscal year in which the loss 
was anticipated if such loss does not in fact occur, or written off in the event that the anticipated loss occurs.  Second, if the mandatory 
distributable amount exceeds the sum of realized net profits in any given year, such excess may be allocated to an unrealized revenue 
reserve.  Under Brazilian Corporate Law, realized net profits is defined as the amount of net profits that exceeds the net positive result of 
equity adjustments and profits or revenues from operations with financial results after the end of the next succeeding fiscal year. 

Under Brazilian Corporate Law, any company may authorize in its bylaws the creation of a discretionary reserve.  Bylaws which 
authorize the allocation of a percentage of a company’s net income to the discretionary reserve must also indicate the purpose, criteria for 
allocation and maximum amount of the reserve.  We may also allocate a portion of our net profits for discretionary allocations for plan 
expansion and other capital investment projects, the amount of which would be based on a capital budget previously presented by 
management and approved by our shareholders.  Under Law No. 10,313 of October 3, 2001, capital budgets for more than one year must 
be revised at each annual shareholders’ meeting.  After completion of the relevant capital projects, we may retain the allocation until the 
shareholders vote to transfer all or a portion of the reserve to capital or retained earnings.  As of December 31, 2010, we had an investment 
reserve of R$2,825.0 million.  

The amounts available for distribution may be further increased by a reversion of the contingency reserve for anticipated losses 
constituted in prior years but not realized.  The amounts available for distribution are determined on the basis of financial statements 
prepared in accordance with Brazilian GAAP. 

The legal reserve is subject to approval by the shareholder vote at our annual shareholders’ meeting and may be transferred to capital 

but is not available for the payment of dividends in subsequent years.  Our calculation of net profits and allocations to reserves for any 
fiscal year are determined on the basis of financial statements prepared in accordance with Brazilian GAAP. 

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Mandatory Distribution 

Brazilian Corporate Law generally requires that the bylaws of each Brazilian corporation specify a minimum percentage of the 

amounts available for distribution by such corporation for each fiscal year that must be distributed to shareholders as dividends, also known 
as the mandatory distributable amount.  Under our bylaws, the mandatory distributable amount has been fixed at an amount equal to not 
less than 25.0% of the amounts available for distribution, to the extent amounts are available for distribution at the end of each given fiscal 
year. 

The mandatory distribution is based on a percentage of adjusted net income, not lower than 25.0%, rather than a fixed monetary 
amount per share.  Brazilian Corporate Law, however, permits a publicly held company, such as us, to suspend the mandatory distribution 
if the board of directors and the fiscal committee report to the shareholders’ meeting that the distribution would be inadvisable in view of 
the company’s financial condition.  The suspension is subject to the approval of holders of common shares.  In this case, the board of 
directors must file a justification for such suspension with the CVM.  Profits not distributed by virtue of the suspension mentioned above 
shall be attributed to a special reserve and, if not absorbed by subsequent losses, must be paid as dividends as soon as the financial 
condition of such company permits such payments. 

Payment of Dividends 

We are required by Brazilian Corporate Law and by our bylaws to hold an annual shareholders’ meeting by the fourth month after the 

end of each fiscal year at which, among other things, the shareholders have to decide on the payment of an annual dividend when profits 
were accrued.  The payment of annual dividends is based on the financial statements prepared for the relevant fiscal year.  Under Brazilian 
Corporate Law, dividends generally are required to be paid within 60 days following the date the dividend was declared, unless a 
shareholders’ equity resolution sets forth another date for payment, which, in either case, must occur prior to the end of the fiscal year in 
which the dividend was declared.  A shareholder has a three year period from the dividend payment date to claim dividends (or interest 
payments on shareholders’ equity as described under “—Record of Dividend Payments and Interest on Shareholders’ Equity”) distributed 
on his or her shares, after which the amount of the unclaimed dividends reverts to us.  The depositary will set the currency exchange date to 
be used for payments to ADS holders as soon as practicable upon receipt of those payments from SABESP. 

Our bylaws allow us to pay interim dividends from preexisting and accumulated profits related to the current or preceding fiscal year. 

In general, shareholders who are not residents of Brazil must register with the Central Bank to have dividends, sales proceeds or other 
amounts with respect to their shares eligible to be remitted outside of Brazil.  The common shares underlying our ADSs are held in Brazil 
by Banco Itaú Unibanco S.A., as the custodian and agent for the depositary, which is the registered owner of the common shares 
underlying the ADSs.  Our current registrar is Banco Itaú Unibanco S.A.  The depositary electronically registers the common shares 
underlying the ADSs with the Central Bank and, therefore, is able to have dividends, sales proceeds or other amounts with respect to these 
shares eligible to be remitted outside Brazil.  See “Item 10.D. Exchange Controls.” 

Payments of cash dividends and distributions, if any, will be made in Brazilian reais to the custodian on behalf of the depositary, which 

will then convert such proceeds into U.S. dollars and will cause such U.S. dollars to be delivered to the depositary for distribution to 
holders of ADSs.  See “Item 10.D. Additional Information—Exchange Controls.”  Under current Brazilian law, dividends generally paid to 
shareholders who are not Brazilian residents, including holders of ADSs, will not be subject to Brazilian withholding income tax, except 
for dividends declared based on profits generated prior to December 31, 1995.  See “Item 10.E. Taxation.” 

Record of Dividend Payments and Interest on Shareholders’ Equity 

Brazilian corporations are permitted to distribute dividends in the form of a tax-deductible notional interest expense on shareholders’ 

equity in accordance with Law No. 9,249 of December 26, 1995, as amended.  The rate at which tax-deductible interest may be paid is 
limited to the product of the average TJLP and shareholders’ equity during the relevant period and cannot exceed the greater of: 

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•               50.0% of net income (before taking into account such distribution and any deductions for income taxes and after taking into 
account any deductions for social contributions on net profits) for the period in respect of which the payment is made; and 

•               50.0% of earnings reserves and retained earnings. 

Any payment of interest on shareholders’ equity to holders of ADSs or common shares, whether or not they are Brazilian residents, is 

subject to Brazilian withholding income tax at the rate of 15.0% or 25.0% if the beneficiary is resident in a tax haven.  See “Item 10.E. 
Taxation.”  The amount paid to shareholders as interest on shareholders’ equity, net of any withholding tax, may be included as part of any 
mandatory distributable amount.   

Dividends and interest on shareholders’ equity over the minimum established in a company’s bylaws are recognized when approved 
by the shareholders in the general meeting.  Consequently, the amounts recognized as of December 31, 2010, correspond to the minimum 
established by law of 25.0% of the net profit and the difference was recorded in April 2011 totalling R$456.0 million. 

Distributions of dividends 

The following table sets forth the distributions of dividends that we made to our shareholders in respect of our 2008, 2009 and 2010 

earnings.  All these amounts distributed or to be distributed were or will be in the form of interest on shareholders’ equity. 

Year ended December 31, 

Aggregate amount 
distributed 
(in millions of reais) 

Payment Dates 

Payment per share  Payment per ADS 

1.30 
2008 
1.73 
2009 
2.00 
2010 
___________ 
(*) We recorded dividends in the amount of R$387.2 million, which pursuant to our bylaws is our minimum dividend amount. 

June 26, 2009 
June 28, 2010 
June 28, 2011 

296.2 
394.2 
456.0(*) 

(in reais) 

2.60 
3.46 
4.00 

Dividend Policy 

We intend to declare and pay dividends and/or interest on shareholders’ equity, as required by Brazilian Corporate Law and our 
bylaws.  Our board of directors may approve the distribution of interest on shareholders’ equity, calculated based on our semiannual or 
quarterly financial statements.  The declaration of dividends is annual, including dividends in excess of the mandatory distribution, and 
requires approval by the vote of the majority of the holders of our common shares.  The amount of any distributions will depend on many 
factors, such as our results of operations, financial condition, cash requirements, prospects and other factors deemed relevant by our board 
of directors and shareholders.  Within the context of our tax planning, we may in the future continue to determine that it is in our best 
interest to distribute interest on shareholders’ equity. 

B.    Significant Changes 

We are not aware of any significant changes bearing upon our financial condition since the date of the consolidated financial 

statements included in this annual report. 
ITEM 9.        THE OFFER AND LISTING 
A.    Offer and Listing Details 

Market Price of Common Shares  

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Our common shares have been listed on the BM&FBOVESPA under the symbol “SBSP3” since June 4, 1997 and, starting on 
April 24, 2002, have been included in the Novo Mercado segment of that exchange.  As of December 31, 2010, we had 2,649 registered 
holders of common shares. 

On April 30, 2007, our shareholders approved a reverse stock split of 125 common shares into one common share.  IFRS requires the 

retroactive restatement of earnings-per-share computations for stock dividends, stock splits, and reverse splits. 

The table below sets forth, for the periods indicated, the reported high and low closing sale prices in reais for common shares on the 
BM&FBOVESPA.  The table also sets forth prices per ADS assuming that ADSs had been outstanding on all such dates and translated into 
U.S. dollars at the commercial market rate for the sale of U.S. dollars for each of the respective dates of such quotations.  In addition, the 
table sets forth the average daily trading volume for our common shares. 

Reais per 1,000 common shares 

U.S. dollar equivalent per ADS 
(1) 

Low 

High 

Low 

High 

2006 
2007 
2007(2) 
______________________ 
(1)  In 2006, each ADS corresponded to 250 common shares 
(2) After the reverse stock split of 125 common shares into one common share. 

154.80 
258.99 
37.21 

308.49 
327.00 
49.10 

17.10 
30.04 
38.32 

35.94 
41.99 
53.10 

Average daily 
trading volume (in 
lots of 1,000 
common shares) 
52,408 
45,680 
17,008 

2008 
2009 

2010 

First quarter 
Second quarter 
Third quarter 
Fourth quarter 

First quarter 
Second quarter 
Third quarter 
Fourth quarter 

2011 

January 
February 
March 
April 
May 
June (through June 20, 2011) 

___________________ 
(2)  Each ADS is equal 2 common shares 

Reais per common share 
High 
Low 

U.S. dollar equivalent per ADS (2)  Average daily 
High 

trading 
volume 

Low 

18.11 
21.87 
21.87 
25.10 
27.50 
31.15 
30.27 
30.27 
32.36 
33.41 
37.59 

40.26 
40.10 
41.13 
45.01 
45.80 
45.00 

46.50 
37.19 
28.86 
32.25 
35.38 
37.19 
44.47 
34.26 
37.50 
37.90 
44.47 

45.35 
42.71 
47.00 
47.34 
49.50 
49.10 

16.08 
18.39 
18.39 
22.56 
29.07 
35.79 
32.70 
32.70 
35.28 
38.05 
44.53 

47.98 
47.91 
49.47 
56.72 
56.23 
56.39 

56.02 
43.66 
24.77 
32.02 
39.18 
43.66 
52.56 
39.55 
41.63 
44.74 
52.56 

53.85 
51.20 
58.35 
58.47 
60.75 
62.37 

384,463 
351,874 
360,725 
334,721 
397,366 
306,677 
311,996 
323,739 
416,256 
265,725 
242,943 

355,129 
228,385 
266,578 
259,358 
254,973 
300,725 

Market Price of ADSs 

Our ADSs, each of which represent two of our common shares, as of the date of this annual report, are listed on the NYSE under the 

symbol “SBS.”  Prior to June 8, 2007, each ADS represented 250 of our common shares.  Our ADSs began trading on the NYSE on 
May 10, 2002 in connection with the initial offering of our equity securities in the United States. 

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The table below sets forth, for the periods indicated, the reported high and low closing prices for our ADSs on the NYSE.  

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Price in U.S. dollars per ADS 

Low 

High 

Average daily 
trading volume 

17.21 
29.15 
16.76 
18.03 
18.03 
22.74 
27.74 
36.58 
33.09 
33.09 
35.33 
37.97 
45.15 

48.60 
48.93 
50.46 
57.06 
56.91 
57.11 

35.35 
53.57 
56.35 
43.40 
25.12 
32.27 
39.51 
43.40 
53.18 
40.16 
41.54 
45.51 
53.18 

53.88 
51.87 
58.74 
59.95 
61.54 
62.63 

321,105 
323,404 
414,961 
331,673 
382,314 
358,534 
296,588 
292,049 
275,432 
262.525 
337,808 
266,393 
234,667 

327,767 
279,104 
287,049 
267,412 
291,459 
340,863 

2006 
2007 
2008 
2009 

2010 

First quarter 
Second quarter 
Third quarter 
Fourth quarter 

First quarter 
Second quarter 
Third quarter 
Fourth quarter 

2011 

January 
February 
March 
April 
May 
June (through June 20, 2011) 

B.    Plan of Distribution 

Not applicable.  

C.    Markets 

Trading on the Brazilian Stock Exchanges  

The BM&FBOVESPA stock and futures exchange is a corporation where all stock and futures trades in Brazil are carried out, with the 

exception of public-debt bonds, which are traded electronically, and the privatization auctions, which are run by the Rio de Janeiro Stock 
Exchange. 

Trading on the BM&FBOVESPA is limited to brokerage firms and is conducted between 10:00 a.m. and 5:00 p.m., or between 
11:00 a.m. and 6:00 p.m. during daylight savings time in Brazil.  The BM&FBOVESPA also permits trading from 5:45 p.m. to 7:00 p.m., 
or between 6:45 p.m. to 7:30 p.m. during daylight savings time in Brazil, during a different trading period of time, called the “after 
market.”  Trading on the after market is subject to regulatory limits on price volatility and on the volume of shares transacted through 
Internet brokers. 

In order to maintain better quality control over the fluctuation of its index, BM&FBOVESPA has adopted a “circuit breaker” system 
pursuant to which trading sessions are suspended for a period of 30 minutes or an hour whenever the BM&FBOVESPA index falls below 
the limits of 10.0% or 15.0%, respectively, in relation to the index at the closing of the previous trading session. 

BM&FBOVESPA settles the sale of shares three business days after they have taken place, without monetary adjustment of the 

purchase price.  The shares are paid for and delivered through a settlement agent affiliated with the BM&FBOVESPA.  The 
BM&FBOVESPA performs multilateral compensation for both the financial obligations and the delivery of shares.  According to the 
BM&FBOVESPA’s regulations, financial settlement is carried out by the Central Bank’s reserve transfer system.  The securities are 
transferred by the BM&FBOVESPA’s custody system.  Both delivery and payment are final and irrevocable. 

Trading on the BM&FBOVESPA is significantly less liquid than trading on the NYSE or other major exchanges in the world.  

Although any of the outstanding shares of a listed company may trade on the BM&FBOVESPA, in most cases fewer than half of the listed 
shares are actually available for trading by the public, the remainder being held by a controlling group or by government entities.  As of the 
end of 2010, the BM&FBOVESPA had a total market capitalization of approximately US$1.5 billion (R$2.6 billion) and an average daily 
trading volume of US$3.7 billion (R$6.5 billion).  The top ten stocks in terms of 2010 trading volume accounted for approximately 49% of 
all shares traded on the BM&FBOVESPA as of December 31, 2010.  As of December 31, 2010, we accounted for approximately 0.4% of 
the market capitalization of all listed companies on BM&FBOVESPA. 

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Trading on the BM&FBOVESPA by a holder not deemed to be domiciled in Brazil for Brazilian tax and regulatory purposes, or a 

“non-Brazilian holder,” is subject to certain limitations under Brazilian foreign investment regulations.  With limited exceptions, non-
Brazilian holders may trade on Brazilian stock exchanges in accordance with the requirements of CMN Resolution No. 2,689, which 
requires that securities held by non-Brazilian holders be maintained in the custody of financial institutions authorized by the Central Bank 
and by the CVM or in deposit accounts with financial institutions.  In addition, Resolution No. 2,689 requires non-Brazilian holders to 
restrict their securities trading to transactions on the BM&FBOVESPA or qualified over-the-counter markets.  With limited exceptions, 
non-Brazilian holders may not transfer the ownership of investments made under Resolution No. 2,689 to other non-Brazilian holders 
through a private transaction.  See “Item 10.E. Taxation—Brazilian Tax Considerations—Taxation of Gains” for a description of certain 
tax benefits extended to non-Brazilian holders who qualify under Resolution No. 2,689. 

The Novo Mercado Segment 

Since April 24, 2002, our common shares have been listed on the Novo Mercado segment of the BM&FBOVESPA.  The Novo 

Mercado is a listing segment designed for the trading of shares issued by companies that voluntarily undertake to abide by some additional 
corporate governance practices and disclosure requirements in addition to those already required under Brazilian law.  A company in the 
Novo Mercado must follow good practices of corporate governance.  These rules generally increase shareholders’ rights and enhance the 
quality of information provided to shareholders.  On April 18, 2002 and on June 19, 2006, our shareholders approved changes to our 
bylaws to comply with the Novo Mercado requirements.  In addition, the Novo Mercado provides for the creation of a Market Arbitration 
Chamber for conflict resolution between investors and companies listed in the Novo Mercado.  

In addition to the obligations imposed by current Brazilian law, a company listed on the Novo Mercado is obligated to: 

•               maintain only voting shares; 

•               hold public offerings of shares in a manner favoring diversification of the company’s shareholder base and broader access to 

retail investors; 

•               maintain a minimum free float of at least 25.0% of the outstanding capital stock of the company; 

•               grant tag along rights for all shareholders in connection with a transfer of control of the company; 

•               limit the term of all members of the board of directors to two years; 

•               ensure that at least 20.0% of the members of the board of directors are independent, as defined under the Novo Mercado 

regulation; 

•               prepare annual, including cash flow statements, in accordance with U.S. GAAP or IFRS or reconciled from Brazilian GAAP to 

U.S. GAAP or IFRS; 

•               disclose information on a quarterly basis, including share ownership of certain of our employees and directors and amount of 

free float of shares; 

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•               hold a tender offer by the company’s controlling shareholder (the minimum price of the shares to be offered will be determined 

by an appraisal process) if it elects to delist from the Novo Mercado; and 

•               make greater disclosure of related party transactions. 

On May 10, 2011, the Novo Mercado rules were revised and currently establish the following additional obligations: 

•               the chairman of the board of directors is prohibited from simultaneously holding the position of chief executive officer; 

•               the board of directors must disclose its opinion on take over proposals within 15 days from the presentation of the proposal; 

and 

•               the company must have a securities purchase policy and a code of ethics. 

Regulation of Brazilian Securities Markets 

The Brazilian securities markets are principally governed by Law No. 6,385 of December 7, 1976, and Brazilian Corporate Law, each 

as amended and supplemented, and by regulations issued by the CVM, which has regulatory authority over the stock exchanges and 
securities markets generally, by the CMN, and by the Central Bank, which has licensing authority over brokerage firms and regulates 
foreign investment and foreign exchange transactions.  These laws and regulations, among others, provide for disclosure requirements 
applicable to issuers of traded securities, protection of minority shareholders and criminal penalties for insider trading and price 
manipulation.  They also provide for licensing and oversight of brokerage firms and governance of the Brazilian stock exchanges.  
Nevertheless, the Brazilian securities markets are not as highly regulated and supervised as the U.S. securities markets. 

Under Brazilian Corporate Law, a company is either public (companhia aberta), such as we are, or closely held (companhia fechada).  
All public companies, including us, are registered with the CVM and are subject to reporting requirements.  A company registered with the 
CVM may have its securities traded on the Brazilian stock exchanges or in the Brazilian over-the-counter market.  Our common shares 
are listed and traded on the BM&FBOVESPA and may be traded privately subject to some limitations. 

To be listed on a Brazilian stock exchange a company must apply for registration with the CVM and the stock exchange where the 

head office of the company is located. 

We have the option to ask that trading in our securities on the BM&FBOVESPA be suspended in anticipation of a material 

announcement.  Trading may also be suspended on the initiative of the BM&FBOVESPA or the CVM, among other reasons, based on or 
due to a belief that a company has provided inadequate information regarding a material event or has provided inadequate responses to the 
inquiries by the CVM or the São Paulo Stock Exchange. 

The Brazilian over-the-counter market consists of direct trades between individuals in which a financial institution registered with the 
CVM serves as intermediary.  No special application, other than registration with the CVM, is necessary for securities of a public company 
to be traded in this market.  The CVM requires that it be given notice of all trades carried out in the Brazilian over-the-counter market by 
the respective intermediaries. 

Trading on the BM&FBOVESPA by non-residents of Brazil is subject to limitations under Brazilian foreign investment and tax 
legislation.  The Brazilian custodian for our common shares underlying the ADSs must, on behalf of the depositary for our ADSs, obtain 
registration from the Central Bank to remit U.S. dollars abroad for payments of dividends, any other cash distributions, or upon the 
disposition of the shares and sales proceeds thereto.  In the event that a holder of ADSs exchanges ADSs for common shares, the holder 
will be entitled to continue to rely on the custodian’s registration for five business days after the exchange.  Thereafter, the holder may not 
be able to obtain and remit U.S. dollars abroad upon the disposition of our common shares, or distributions relating to our common shares, 
unless the holder obtains a new registration.  See “Item 10.D. Exchange Controls.” 

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D.    Selling Shareholders 

Not applicable.  

E.    Dilution 

Not applicable.  

F.    Expenses of the Issue 

Not applicable.  

ITEM 10.      ADDITIONAL INFORMATION 
A.    Share Capital 

Not applicable.  

B.    Memorandum and Articles of Association 

The following is a summary of the material terms of our common shares, including related provisions of our bylaws and Brazilian 

Corporate Law.  This description is qualified by reference to our bylaws and to Brazilian law. 

Corporate Purposes 

We are a mixed capital company (sociedade de economia mista) of unlimited duration, incorporated on September 6, 1973, with 
limited liability, duly organized and operating under Brazilian Corporate Law.  As set forth in Article 2 of our bylaws, our corporate 
purpose is to render basic sanitation services, aimed at the universalization of basic sanitation in the State of São Paulo without harming 
our long-term financial sustainability.  Our activities comprise water supply, sanitary sewage services, urban rainwater management and 
drainage services, urban cleaning services solid waste management services and related activities, including the planning, operation, 
maintenance and commercialization of energy, and the commercialization of services, products, benefits and rights that directly or 
indirectly arise from its assets, operations and activities.  We are allowed to act, in a subsidiary form, in other Brazilian locations and 
abroad. 

Directors’ Powers 

Although our bylaws contain no specific provisions regarding a director or executive officer’s power to vote on a proposal, 

arrangement or contract in which that director has a material interest, under Brazilian Corporate Law, a director or an executive officer is 
prohibited from voting in any meeting or with respect to any transaction in which that director or executive officer has a conflict of interest 
with the company and must disclose the nature and extent of the conflicting interest to be recorded in the minutes of the meeting.  In any 
case, a director or an executive officer may not transact any business with the company, including any borrowing, except on reasonable or 
fair terms and conditions that are identical to the terms and conditions prevailing in the market or offered by third parties. 

Under our bylaws, our shareholders are responsible for establishing the compensation we pay to the members of our board of directors, 

members of the fiscal committee and the executive officers. 

Pursuant to Brazilian Corporate Law, each member of our board of directors must be a shareholder of our Company and, pursuant to 

our bylaws, a resident of Brazil.  Our bylaws do not establish any mandatory retirement age limit. 

See also “Item 6.A. Directors and Senior Management.” 

Description of Common Shares 

General 

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Each common share entitles the holder thereof to one vote at our annual or special shareholders’ meetings.  Brazilian Corporate Law 
requires that all our shareholders’ meetings be called by publication of a notice in the Diário Oficial do Estado de São Paulo, the official 
government publication of the State of São Paulo, and in a newspaper of general circulation in our principal place of business, currently the 
city of São Paulo, at least fifteen days prior to the meeting.  In addition, the CVM may also require the first call for a shareholders’ meeting 
to be up to 30 days before such shareholders’ meeting.  The quorum to hold shareholders’ meetings on first call requires the attendance of 
shareholders, either in person or by proxy, representing at least 25.0% of the shares entitled to vote and, on second call, the meetings can be 
held with the attendance of shareholders, also either in person or by proxy, representing any number of shares entitled to vote. 

Under Brazilian Corporate Law, our common shares are entitled to dividends or other distributions made in respect of our common 
shares in proportion to their share of the amount available for the dividend or distribution.  See “Item 8.A. Consolidated Statements and 
Other Financial Information—Dividends and Dividend Policy” for a more complete description of payment of dividends and other 
distributions on our common shares.  In addition, upon any liquidation of our Company, our common shares are entitled to our remaining 
capital after paying our creditors in proportion to their ownership interest in us. 

In principle, a change in shareholder rights, such as the reduction of the compulsory minimum dividend, is subject to a favorable vote 

of the shareholders representing at least one half of our voting shares.  Under some circumstances that may result in a change in the 
shareholder rights, such as the creation of preferred shares, Brazilian Corporate Law requires the approval of a majority of the shareholders 
who would be adversely affected by the change attending a special meeting called for such reason.  Brazilian Corporate Law specifies other 
circumstances where a dissenting shareholder may also have appraisal rights. 

According to Brazilian Corporate Law, neither a company’s bylaws nor actions taken at a general meeting of shareholders may 

deprive a shareholder of certain rights, such as: 

•               the right to participate in the distribution of profits;  

•               the right to participate equally and ratably in any remaining residual assets in the event of liquidation of the company;  

•               the right to supervise the management of the corporate business as specified in Brazilian Corporate Law;  

•               the right to preemptive rights in the event of a subscription of shares, debentures convertible into shares or subscription 

bonuses  (except in some specific circumstances under Brazilian law); and  

•               the right to withdraw from the company in the cases specified in Brazilian Corporate Law. 

Pursuant to Brazilian Corporate Law and our bylaws, each of our common shares carries the right to one vote at our shareholders’ 

meetings.  We may not restrain or deny that right without the consent of the holders of a majority of the shares affected. 

Neither Brazilian Corporate Law nor our bylaws expressly addresses: 

•               staggered terms for directors; 

•               cumulative voting, except as described below; or 

•               measures that could prevent a takeover attempt. 

However, under the laws of the State of São Paulo, the State is required to own at least a majority of our outstanding common shares. 

According to Brazilian Corporate Law and its regulations, shareholders representing at least five per cent of our capital, may request 

that a multiple voting procedure be adopted to entitle each share to as many votes as there are board members and to give each shareholder 
the right to vote cumulatively for only one candidate or to distribute their votes among several candidates.  Pursuant to Brazilian Corporate 
Law, shareholder action must be taken at a shareholders meeting, duly called for and not by written consent. 

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In addition, shareholders owning at least 15.0% of the capital may request the right to elect, separately a member of the Board of 

Directors. 

Preemptive Rights 

Each of our shareholders has a general preemptive right to subscribe for shares or securities convertible into shares in any capital 
increase, in proportion to his or her ownership interest in us, except in the event of the grant and exercise of any option to acquire shares of 
our capital stock.  The preemptive rights are valid for a 30-day period from the publication of the announcement of the capital increase.  
Shareholders are also entitled to sell this preemptive right to third parties.  Under Brazilian Corporate Law, we may amend our bylaws to 
eliminate preemptive rights or to reduce the exercise period in connection with a public offering of shares or an exchange offer made to 
acquire another company.  Currently, our bylaws provide our shareholders with preemptive rights with respect to any offering. 

In the event of a capital increase by means of the issuance of new shares, holders of ADSs, or of common shares, would, except under 

circumstances described above, have preemptive rights to subscribe for any class of our newly issued shares.  However, an ADS holder 
may not be able to exercise the preemptive rights relating to the common shares underlying his or her ADSs unless a registration statement 
under the Securities Act is effective with respect to those rights or an exemption from the registration requirements of the Securities Act is 
available.  See “Item 3.D. Risk Factors—Risks Relating to Our Common Shares and ADSs—A holder of our common shares and ADSs 
might be unable to exercise preemptive rights and tag-along rights with respect to the common shares.” 

Redemption and Rights of Withdrawal 

Brazilian Corporate Law provides that, under limited circumstances, a shareholder has the right to withdraw his or her equity interest 

from the company and to receive payment for the portion of shareholder’s equity attributable to his or her equity interest.  This right of 
withdrawal may be exercised by dissenting shareholders of SABESP in the event that at least half of all voting shares outstanding authorize 
us: 

•               to create preferred shares; 

•               to reduce the mandatory distribution of dividends; 

•               to merge into another company or to consolidate with another company, subject to the conditions set forth in Brazilian 

Corporate Law; 

•               to participate in a centralized group of companies, as defined under Brazilian Corporate Law and subject to the conditions set 

forth therein; 

•               to change our corporate purpose; 

•               to split up, subject to the conditions set forth in Brazilian Corporate Law; 

•               to transform into another type of company; 

•               to transfer all of our shares to another company or to receive shares of another company in order to make the company whose 

shares are transferred a wholly owned subsidiary of such company, known as incorporação de ações; or 

•               to acquire control of another company at a price which exceeds the limits set forth in Brazilian Corporate Law. 

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The right of withdrawal lapses 30 days after publication of the minutes of the shareholders’ meeting that approved a corporate action 

described above.  We would be entitled to reconsider any action giving rise to withdrawal rights within 10 days following the expiration of 
such rights if the withdrawal of shares of dissenting shareholders would jeopardize our financial condition.  Brazilian Corporate Law 
allows companies to redeem their shares at their economic value, subject to the provisions of their bylaws and certain other requirements.  
Our bylaws currently do not provide that our capital stock will be redeemable at its economic value and, consequently, any redemption 
pursuant to Brazilian Corporate Law would be made based on the book value per share, determined on the basis of the last balance sheet 
approved by the shareholders.  However, if a shareholders’ meeting giving rise to redemption rights occurred more than 60 days after the 
date of the last approved balance sheet, a shareholder would be entitled to demand that his or her shares be valued on the basis of a new 
balance sheet dated within 60 days of such shareholders’ meeting. 

In addition, the rights of withdrawal in the third, fourth and eighth bullet points above may not be exercised by holders of shares if 
such shares (i) are liquid, defined as being part of the BM&FBOVESPA index or other stock exchange index (as defined by the CVM), and 
(ii) are widely held, such that the controlling shareholder or companies it controls have less than 50.0% of our shares.  Our common shares 
are included on the BM&FBOVESPA index. 

This right of withdrawal may also be exercised in the event that the entity resulting from a merger, incorporação de ações, as described 

above, consolidation or spin-off of a listed company fails to become a listed company within 120 days of the shareholders’ meeting at 
which such transaction was approved. 

We may cancel the right of withdrawal if the payment amount has a material adverse effect on our finances.  

Conversion Right 

Not applicable because our capital stock is only comprised of common shares. 

Especial and General Meetings 

Unlike the laws governing corporations incorporated under the laws of the State of Delaware, the Brazilian corporation law does not 

allow shareholders to approve matters by written consent obtained as a response to a consent solicitation procedure.  All matters subject to 
approval by the shareholders must be approved in a general meeting, duly convened pursuant to the provisions of Brazilian corporation 
law.  Shareholders may be represented at a shareholders’ meeting by attorneys-in-fact who are (i) shareholders of the corporation, (ii) a 
Brazilian attorney, (iii) a member of management or (iv) a financial institution. 

General and special shareholders’ meetings may be called by publication of a notice in the Diário Oficial do Estado de São Paulo and 

in a newspaper of general circulation in our principal place of business at least 15 days prior to the meeting.  Special meetings are 
convened in the same manner as general shareholders’ meetings and may occur immediately before or after a general meeting. 

At duly called and convened meetings, our shareholders are empowered to take any action regarding our business.  Shareholders have 
the exclusive right, during our annual shareholders’ meetings required to be hold within 120 days of the end of our fiscal year, to approve 
our financial statements and to determine the allocation of our net income and the distribution of dividends related to the fiscal year 
immediately preceding the meeting.  The members of our board of directors are generally elected at annual shareholders’ meetings.  
However, according to Brazilian corporation law, they can also be elected at extraordinary shareholders’ meetings.  At the request of 
shareholders holding a sufficient number of shares, a fiscal committee can be established and its members elected at any shareholders’ 
meeting. 

A special shareholders’ meeting may be held concurrently with the annual shareholders’ meeting and at other times during the year.  

Our shareholders may take the following actions, among others, exclusively at shareholders’ meetings: 

•               election and dismissal of the members of our board of directors and our fiscal committee, if the shareholders have requested 

the set up of the latter; 

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•               approval of the aggregate compensation of the members of our board of directors and board of executive officers, as well as the 

compensation of the members of the fiscal committee, if one has been established; 

•               amendment of our bylaws; 

•               approval of our merger, consolidation or spin-off; 

•               approval of our dissolution or liquidation, as well as the election and dismissal of liquidators and the approval of their 

accounts; 

•               granting stock awards and approval of stock splits or reverse stock splits; 

•               approval of stock option plans for our management and employees, as well as for the management and employees of other 

companies directly or indirectly controlled by us; 

•               approval, in accordance with the proposal submitted by our board of directors, of the distribution of our net income and 

payment of dividends; 

•               authorization to delist from the Level 2 of Differentiated Corporate Governance Practices and to become a private company, 

except if the cancellation is due to a breach of the Level 2 regulations by management, and to retain a specialized firm to prepare a 
valuation report with respect to the value of our shares, in any such events; 

•               approval of our management accounts and our financial statements; 

•               approval of any primary public offering of our shares or securities convertible into our shares; and 

•               deliberate upon any matter submitted by the board of directors. 

Limitations on Rights to Own Securities 

There are no limitations under Brazilian law and our bylaws on the rights of non-residents or foreign shareholders to own securities, 

including the rights of such non-resident or foreign shareholders to hold or exercise voting rights. 

Anti-Takeover Provisions 

Pursuanto to article 9 of our bylaws and the Novo Mercado regulations, any party that acquires our control must extend a tender offer 

for common and preferred shares held by non-controlling shareholders at the same conditions and purchase price paid to the controlling 
shareholder.  In addition, State Law No. 119/73, which created our Company, requires the State to hold the majority of our common shares 
at all times. 

Reserves 

General 

The Brazilian Corporate Law provides that all discretionary allocations of “adjusted income” are subject to shareholder approval and 

may be added to capital or distributed as dividends in subsequent years.  In the case of our capital reserve and the legal reserve, they are 
also subject to shareholder approval; however, the use of their respective balances is restricted to being added to capital or absorbed by 
losses.  They cannot be used as a source for income distribution to shareholders.  

Capital Reserve 

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Our capital reserve is comprised of tax incentives and donations from government agencies and private entities received through 

December 31, 2007.  As of December 31, 2010, we had a capital reserve of R$124.3 million.  

Investment Reserve  

Our investment reserve is comprised specifically of internal funds for expansion of water and sewage service systems.  As of December 31, 
2010, we had an investment reserve of R$2,825.0 million. 

Legal Reserve  

Under Brazilian Corporate Law, we are required to record a legal reserve to which we must allocate 5% of the adjusted net income 

each year until the amount of the reserve equals 20.0% of paid-in capital.  Any accumulated deficit may be charged against the legal 
reserve.  As of December 31, 2010, the balance of our legal reserve was R$460.0 million. 

Arbitration 

In connection with our listing with the Novo Mercado segment of the BM&FBOVESPA, we, our shareholders, directors and officers 
have undertaken to refer to arbitration any and all disputes or controversies arising out of the Novo Mercado rules or any other corporate 
matters.  See “Item 9.C. Markets.”  Under our bylaws, any dispute among us, our shareholders and our management with respect to the 
application of Novo Mercado rules, Brazilian Corporate Law, the application of the rules and regulations regarding Brazilian capital 
markets, will be resolved by arbitration conducted pursuant to the BM&FBOVESPA Arbitration Rules in the Market Arbitration Chamber.  
Any dispute among shareholders, including holders of ADSs, and any dispute between us and shareholders, including holders of ADSs, 
will also be submitted to arbitration. 

Options 

There are currently no outstanding options to purchase any of our common shares. 

C.    Material Contracts 

For a description of the material contracts entered into by SABESP and the State, see “Item 7.B. Related Party Transactions—

Transactions with the State of São Paulo—Agreements with the State.”  

D.    Exchange Controls  

The right to convert dividend or interest payments and proceeds from the sale of shares into foreign currency and to remit such 

amounts outside Brazil is subject to restrictions under foreign investment legislation which generally requires, among other things, that the 
relevant investments have been registered with the Central Bank and the CVM.  Such restrictions on the remittance of foreign capital 
abroad may hinder or prevent the custodian for our common shares represented by our ADSs or the holders of our common shares from 
converting dividends, distributions or the proceeds from any sale of these preferred shares into U.S. dollars and remitting the U.S. dollars 
abroad.  Holders of our ADSs could be adversely affected by delays in, or refusal to grant any, required government approval to convert 
Brazilian currency payments on the common shares underlying our ADS and to remit the proceeds abroad. 

Resolution No. 1,927 of the CMN provides for the issuance of depositary receipts in foreign markets in respect of shares of Brazilian 

issuers.  The ADS program was approved under the Annex V Regulations by the Central Bank and the CVM prior to the issuance of the 
ADSs.  Accordingly, the proceeds from the sale of ADSs by ADR holders outside Brazil are not subject to Brazilian foreign investment 
controls, and holders of the ADSs are entitled to favorable tax treatment under certain circumstances.  See “Item 3.D. Risk Factors—Risks 
Relating to Our Common Shares and ADSs—Investors who exchange ADSs for common shares may lose their ability to remit foreign 
currency abroad and to obtain Brazilian tax advantages” and “Item 10.E. Taxation—Brazilian Tax Considerations.” 

E.    Taxation 

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This summary contains a description of certain Brazilian and U.S. federal income tax consequences of the purchase, ownership and 

disposition of common shares or ADSs by a holder. 

The summary is based upon the tax laws of Brazil and the federal income tax laws of the United States as in effect on the date of this 

annual report, which laws are subject to change, possibly with retroactive effect, regarding the U.S. federal income tax, and to differing 
interpretations.  Holders of common shares or ADSs should consult their own tax advisors as to the Brazilian, U.S. or other tax 
consequences of the purchase, ownership and disposition of common shares or ADSs, including, in particular, the effect of any non-
Brazilian, non-U.S., state or local tax laws. 

Although there presently is no income tax treaty between Brazil and the United States, the tax authorities of the two countries have had 
discussions in the past regarding such a treaty.  No assurance can be given, however, as to if or when a treaty will enter into force or how it 
will affect the U.S. holders of common shares or ADSs. 

Brazilian Tax Considerations 

The following discussion summarizes the principal Brazilian tax consequences of the acquisition, ownership and disposition of 
common shares or ADSs by a holder that is not domiciled in Brazil for purposes of Brazilian taxation (a “non-Brazilian holder”).  It is 
based on Brazilian laws and regulations as currently in effect, and, therefore, any change in such law may change the consequences 
described below.  Each non-Brazilian holder should consult his or her own tax adviser concerning the Brazilian tax consequences of an 
investment in common shares or ADSs. 

A non-Brazilian holder of ADSs may withdraw them in exchange for common shares in Brazil.  Pursuant to Brazilian law, the 
non-Brazilian holder may invest in the common shares under Resolution 2,689, of January 26, 2000, of the CMN (“2,689 holder”). 

Taxation of Dividends 

As a result of the tax legislation adopted on December 26, 1995, dividends based on profits generated after January 1, 1996, including 
dividends paid in kind, payable by us in respect of common shares or ADSs, are exempt from withholding income tax.  Dividends relating 
to profits generated prior to January 1, 1996 may be subject to Brazilian withholding income tax at varying rates, depending on the year the 
profits were generated.  

Taxation of Gains 

Gains realized outside Brazil by a non-Brazilian holder on the disposition of ADSs to another non-Brazilian holder are not currently 

subject to Brazilian tax.  However, according to certain interpretations of Law no. 10,833 of December 2003, or Law No. 10,833, the 
disposition of assets located in Brazil by a non-Brazilian holder, whether to other non-Brazilian holder or Brazilian holders, may become 
subject to taxation in Brazil.  Although we believe that the ADSs do not fall within the definition of assets located in Brazil for the 
purposes of Law no. 10,833, considering the general and unclear scope of it and the lack of definitive judicial court ruling to act as the 
leading case in respect thereto, we are unable to predict whether such understanding will ultimately prevail in the courts of Brazil. 

Thus, the gain on disposition of ADSs by a non-Brazilian holder to a resident in Brazil (or even to a non Brazilian resident in case the 
argument above does not prevail) may be subject to income tax in Brazil according to the rules described below for ADSs or the tax rules 
applicable to common shares, as applicable. 

The withdrawal of ADSs in exchange for common shares is not subject to Brazilian income tax provided that the regulatory rules are 
appropriately observed in respect to the registration of the investment before the Central Bank of Brazil.  The deposit of common shares in 
exchange for ADSs may be subject to Brazilian capital income tax at the rate of 15% or 25%, in case the non-Brazilian holder is located in 
a tax haven, if the acquisition cost of the common shares is lower than (1) the average price per common share on a Brazilian stock 
exchange on which the greatest number of such shares were sold on the day of deposit, or (2) if no common shares were sold on that day, 
the average price on the Brazilian stock exchange on which the greatest number of common shares were sold in the fifteen trading sessions 
immediately preceding such deposit.  In this case, the difference between the acquisition cost and the average price of the common shares, 
calculated as above, shall be considered a capital gain. 

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For Brazilian purposes, as of January 2009, tax haven is considered a regime:  (i) that does not impose income tax or when doing so at 

a rate of 20% or lower, (ii) that grants a tax benefit to a non- resident individual or entity:  (a) without substantial requirements, and/or 
(b) dependent upon the carrying out of non-substantial economic activities; (iii) that does not impose tax on foreign income or when doing 
so at a rate of 20% or lower; (iv) that does not allow access to information regarding the corporate organization or structure of the resident 
entity or the ownership of its shares or stocks or to their economic activities.  In this respect, it should be pointed out that the new concept 
of tax havens is applicable to transfer pricing rules and to laws that make express referral to this law.  However, it is possible that the 
Brazilian IRS may apply the new concept to other laws which adopted the similar concept, but are not bound to the transfer pricing rules, 
such as the rule regarding non-residents resident in tax havens which trade in the local stock exchange.  The Brazilian IRS has not yet 
issued regulations or a new black list based on this new concept. 

Gains realized on disposition of common shares, are subject to income tax in Brazil, regardless of whether the sale or the disposition is 

made by the non-Brazilian holder to a resident or person domiciled in Brazil or not, based on the fact that the common shares could be 
considered as assets located in Brazil for purposes of Law No. 10,833. 

Thus, for purposes of taxation of gains earned in a sale or disposition of common shares carried out on the Brazilian stock exchange 

(which includes the transactions carried out on the organized over-the-counter market): 

•          are exempt from income tax when assessed by a 2,689 holder and is not a tax haven based holder; and 

•          are subject to income tax at a rate of 15% in any other case, including gains assessed by a non-Brazilian holder that (1) is not a 

2,689 holder, or (2) is a 2,689 holder but is a tax haven based holder.  In these cases, a withholding income tax of 0.005% shall be 
applicable and can be offset with the eventual income tax due on the capital gain. 

Any other gains assessed on the disposition of the common shares that are not carried out on the Brazilian stock exchange are subject 
to income tax a rate of 15%, except for tax haven holder which, in this case, is subject to income tax at a rate of 25%.  In case these gains 
are related to transactions conducted on the Brazilian non-organized over-the-counter market with intermediation, the withholding 
income tax of 0.005% shall also be applicable and can be offset with the eventual income tax due on the capital gain. 

In the case of redemption of securities or capital reduction by a Brazilian corporation, such as ourselves, the positive difference 
between the amount effectively received by the non-Brazilian holder and the corresponding acquisition cost is treated, for tax purposes, as 
capital gain derived from disposition of common shares not carried out on a Brazilian stock exchange market, and is therefore subject to 
income tax at the rate of 15% or 25%, as the case may be. 

Any exercise of preemptive rights relating to the common shares will not be subject to Brazilian income tax.  Any gain on the sale or 

assignment of preemptive rights relating to the common shares by a non-Brazilian holder of common shares or ADSs will be subject to 
Brazilian taxation at the same rate applicable to the sale or disposition of common shares. 

There is no assurance that the current preferential treatment for holders of ADSs and non-Brazilian holders of common shares under 

Resolution 2,689 will continue in the future or that it will not be changed in the future.  Reductions in the rate of tax provided for by 
Brazil’s tax treaties do not apply to the tax on gains realized on sales or exchange of common shares. 

Interest Attributed to Shareholders’ Equity 

According to Brazilian laws and our bylaws, we may opt to distribute income as interest attributed to shareholders’ equity as an 

alternative to the payment of dividends.  

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Distribution of an interest on equity charge attributed to shareholders’ equity in respect of the common shares or ADSs as an 
alternative form of payment to shareholders, including non-Brazilian holders of common shares or ADSs, is subject to Brazilian 
withholding income tax at the rate of 15% or 25%, in case of a tax-haven based holder.  Such payments, subject to certain limitations and 
requirements, are deductible for Brazilian income tax purposes. 

Other Brazilian Taxes 

There are no Brazilian inheritance, gift or succession taxes applicable to the ownership, transfer or disposition of common shares or 

ADSs by a non-Brazilian holder, except for gift and inheritance taxes, which are levied by some states of Brazil on gifts made or 
inheritances bestowed by a non-Brazilian holder to individuals or entities resident or domiciled within such states in Brazil.  There is no 
Brazilian stamp, issue, registration, or similar taxes or duties payable by a non-Brazilian holder of common shares or ADSs. 

Tax on Financial Transactions (Imposto sobre Operações Financeiras, or IOF) 

The IOF is a tax on foreign exchange, securities, credit and insurance transactions.  The IOF rate may be changed by an Presidential 
Decree (rather than a law).  In addition, the IOF rate is not subject to the ex-post-facto principle, which provides that laws increasing the 
rate of or creating new taxes will only come into effect as of the latter of (i) the first day of the year following their publication, or 
(ii) ninety days after their publication, and therefore, any increase in the IOF rate has an immediate effect.  A statute increasing the IOF rate 
will as a result only take effect from its publication date. 

Regarding foreign exchange transactions, in spite of the maximum rate of IOF being 25%, the inflow and outflow of funds are 
generally subject to IOF at a rate of 0.38%; however, the inflow and outflow of funds from portfolio investors located outside Brazil are 
not taxed.  The conversion of Brazilian currency into foreign currency for purposes of paying dividends on preferred shares and ADS is 
currently not taxed. 

The IOF may also be imposed on any transactions involving bonds and securities, including those carried out on Brazilian futures and 
commodities stock exchanges.  As a general rule, the rate of this tax for transactions involving common shares or ADSs is currently zero, 
although the executive branch, also by a Presidential Decree, may increase such rate up to 1.5% per day, but only with respect to future 
transactions. 

United States Federal Income Tax Considerations 

The following discussion is a summary of certain U.S. federal income tax consequences of the acquisition, ownership and disposition 
of common shares or ADSs as of the date hereof.  This discussion applies only to a beneficial owner of common shares or ADSs that is a 
“U.S. holder”.  As used herein, the term “U.S. holder” means a beneficial owner of a common share or ADS that, for U.S. federal income 
tax purposes, is: 

•               an individual who is a citizen or resident of the United States; 

•               a corporation (or other entity treated as a corporation for U.S. federal income tax purposes) created or organized in or under the 

laws of the United States any state thereof or the District of Columbia; 

•               an estate the income of which is subject to U.S. federal income taxation regardless of its source; or 

•               a trust if it (1) is subject to the primary supervision of a court within the United States and one or more U.S. persons have the 
authority to control all substantial decisions of the trust or (2) has a valid election in effect under applicable U.S. Treasury 
Department regulations to be treated as a U.S. person. 

If a partnership (or other entity treated as a partnership for U.S. federal income tax purposes) holds common shares or ADSs, the tax 

treatment of a partner will generally depend upon the status of the partner and the activities of the partnership.  A U.S. holder that is a 
partner of a partnership holding common shares or ADSs should consult its tax advisors. 

Except where noted, this discussion deals only with common shares or ADSs held as capital assets within the meaning of Section 1221 

of the Internal Revenue Code of 1986, as amended, or the Code, and does not deal with U.S. holders that may be subject to special U.S. 
federal income tax rules, such as dealers in securities or currencies, traders in securities that elect to use a mark-to-market method of 
accounting for their securities holdings, banks or other financial institutions, tax-exempt organizations, insurance companies, real estate 
investment trusts, regulated investment companies, persons holding common shares or ADSs as part of a hedging, integrated, conversion or 
constructive sale transaction or a straddle, persons liable for alternative minimum tax, pass-through entities and investors in a pass-through 
entity, persons owning 10% or more of our voting stock, or persons whose “functional currency” is not the U.S. dollar. 

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This discussion is based upon the provisions of the Code, and existing and proposed U.S. Treasury Department regulations, 

administrative pronouncements of the Internal Revenue Service, or the IRS, and judicial decisions as of the date hereof.  Such authorities 
may be repealed, revoked or modified so as to result in U.S. federal income tax consequences different from those discussed below, 
possibly with retroactive effect.  In addition, this discussion is based, in part, upon representations made by the Depositary to us and 
assumes that the deposit agreement, and all other related agreements, will be performed in accordance with their terms. 

Except as specifically described below, this discussion assumes that we are not a passive foreign investment company, or PFIC, for 
U.S. federal income tax purposes.  Please see the discussion under “—Passive Foreign Investment Company Rules” below.  Further, this 
discussion does not address the U.S. federal estate and gift, alternative minimum tax, state, local or non-U.S. tax consequences of 
acquiring, holding or disposing of common shares or ADSs. 

ADSs 

In general, for U.S. federal income tax purposes, U.S. holders of ADSs will be treated as the owners of the underlying common shares 

that are represented by such ADSs.  Deposits or withdrawals of common shares by U.S. holders for ADSs will not be subject to U.S. 
federal income tax.  However, the U.S. Treasury Department has expressed concerns that parties involved in transactions wherein 
depositary shares are pre-released may be taking actions that are inconsistent with the claiming of foreign tax credits by the holders of 
ADSs.  Accordingly, the analysis of the creditability of Brazilian income taxes described herein could be affected by future actions that 
may be taken by the U.S. Treasury Department. 

Taxation of Dividends 

The gross amount of distributions paid to a U.S. holder (including amounts withheld by the Brazilian taxing authority, if any, and any 

payments of interest on shareholders’ equity, as described above under “—Brazilian Tax Considerations”) will be treated as dividend 
income to the extent paid out of our current or accumulated earnings and profits, as determined under U.S. federal income tax principles.  
Such income generally will be includable in a U.S. holder's gross income as ordinary income when actually or constructively received by 
the U.S. holder, in the case of common shares, or when actually or constructively received by the Depositary, in the case of ADSs.  Such 
dividends will not be eligible for the dividends received deduction allowed to corporations under the Code.  To the extent that the amount 
of any distribution exceeds our current and accumulated earnings and profits for a taxable year, the distribution will first be treated as a 
tax-free return of capital to the extent of the U.S. holder’s adjusted tax basis in the common shares or ADS, causing a reduction in such 
adjusted tax basis (and thereby increasing the amount of gain, or decreasing the amount of loss, to be recognized on a subsequent 
disposition of our common shares or ADSs), and thereafter as capital gain recognized on a sale or exchange.  Because we do not expect to 
maintain calculations of earnings and profits in accordance with U.S. federal income tax principles, U.S. holders should expect that a 
distribution will generally be treated as a dividend for U.S. federal income tax purposes.  Distributions of additional common shares or 
ADSs to U.S. holders that are part of a pro rata distribution to all of our shareholders generally will not be subject to U.S. federal income 
tax. 

The amount of any dividend paid in reais will equal the U.S. dollar value of the reais received calculated by reference to the exchange 

rate in effect on the date the dividend is received by the U.S. holder, in the case of common shares, or by the Depositary, in the case of 
ADSs, regardless of whether the reais are converted into U.S. dollars.  If the reais received as a dividend are not converted into U.S. dollars 
on the date of receipt, the U.S. holder will have a tax basis in the reais equal to their U.S. dollar value on the date of receipt.  Any gain or 
loss realized on a subsequent conversion or other disposition of the reais will be foreign currency gain or loss that is treated as U.S. source 
ordinary income or loss.  If dividends paid in reais are converted into U.S. dollars on the day they are received by the U.S. holder or the 
Depositary, as the case may be, U.S. holders generally should not be required to recognize foreign currency gain or loss in respect of the 
dividend income.  U.S. holders should consult their own tax advisors regarding the treatment of any foreign currency gain or loss if any 
reais received by the U.S. holder or the Depositary or its agent are not converted into U.S. dollars on the date of receipt. 

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Certain dividends received by certain non-corporate U.S. holders may be eligible for preferential tax rates so long as (1) specified 
holding period requirements are met, (2) the U.S. holder is not under an obligation (whether pursuant to a short sale or otherwise) to make 
related payments with respect to positions in substantially similar or related property, (3) the company paying the dividend is a “qualified 
foreign corporation” and (4) the company is not a PFIC for U.S. federal income tax purposes, in the year of distribution or the prior year.  
We do not believe that we were classified as a PFIC for our prior taxable year nor do we expect to be classified as a PFIC for the current 
taxable year.  We generally will be treated as a qualified foreign corporation with respect to our ADSs so long as the ADS remain listed on 
the NYSE.  Based on existing guidance, however, it is not entirely clear whether dividends received with respect to the common shares (to 
the extent not represented by ADSs) will be eligible for this treatment, because the common shares are not themselves listed on a U.S. 
exchange. U.S. holders should consult their own tax advisors about the application of this preferential tax rate to dividends paid directly on 
common shares. 

Subject to certain complex limitations and conditions (including a minimum holding period requirement), Brazilian income taxes 

withheld on dividends, if any, may be treated as foreign income taxes eligible for credit against a U.S. holder’s U.S. federal income tax 
liability.  Alternatively, at a U.S. holder’s election if it does not elect to claim a foreign income tax credit for any foreign taxes paid during 
the taxable year, all foreign income taxes paid may instead be deducted in computing such U.S. holder’s taxable income.  For purposes of 
calculating the foreign tax credit, dividends paid on our common shares will be treated as income from sources outside the United States.  
For the purposes of the U.S. foreign tax credit limitations, the dividends paid by us should generally constitute “passive category income” 
for most U.S. holders. The rules governing the foreign tax credit are complex. U.S. holders should consult their tax advisors regarding the 
availability of the foreign tax credit under their particular circumstances. 

Taxation of Capital Gains 

For U.S. federal income tax purposes, a U.S. holder generally will recognize taxable gain or loss on any sale, exchange or other 
taxable disposition of a common share or ADS in an amount equal to the difference between the U.S. dollar value of the amount realized 
for the common share or ADS and the U.S. holder's adjusted tax basis in the common share or ADS, determined in U.S. dollars.  Such gain 
or loss will generally be capital gain or loss.  The capital gain or loss will be long-term capital gain or loss if at the time of sale, exchange 
or other taxable disposition the U.S. holder has held our common shares or ADSs for more than one year.  Capital gains of individuals 
derived with respect to capital assets held for more than one year are eligible for reduced rates of taxation.  The deductibility of capital 
losses is subject to limitations.  Any gain or loss recognized by a U.S. holder will generally be treated as U.S. source gain or loss.  
Consequently, a U.S. holder may not be able to use the foreign tax credit arising from Brazilian income tax imposed, if any, on the 
disposition of a common share or ADS unless such credit can be applied (subject to applicable limitations) against U.S. federal income tax 
due on other income treated as derived from foreign sources.  Although we do not believe that U.S. holders will be entitled to a credit or 
deduction with respect to any IOF tax paid on our common shares (as discussed above in “—Brazilian Tax Considerations—Tax on 
Financial Transactions (Imposto sobre Operações Financeiras, or IOF)”, U.S. holders should, however, be entitled to include the amount of 
the IOF tax paid as part of their initial tax basis in such common shares. 

Passive Foreign Investment Company Rules 

Based upon our current and projected income, assets, activities and business plans, we do not expect the common shares or ADSs to be 

considered shares of a PFIC for our current fiscal year (although the determination cannot be made until the end of such fiscal year), and 
we intend to continue our operations in such a manner that we do not expect to be classified as a PFIC in the foreseeable future.  However, 
because the determination of whether the common shares or ADSs constitute shares of a PFIC will be based upon the composition of our 
income, assets and the nature of our business, as well as the income, assets and business of entities in which we hold at least a 25% interest, 
from time to time, and because there are uncertainties in the application of the relevant rules, there can be no assurance that the common 
shares or ADSs will not be considered shares of a PFIC for any fiscal year.  If the common shares or ADSs were shares of a PFIC for any 
fiscal year, U.S. holders (including certain indirect U.S. holders) may be subject to adverse tax consequences, including the possible 
imposition of an interest charge on gains or “excess distributions” allocable to prior years in the U.S. holder’s holding period during which 
we were determined to be a PFIC.  If we are deemed to be a PFIC for a taxable year, dividends on our ADSs would not be qualified 
dividend income eligible for preferential rates of U.S. federal income taxation.  In addition, a U.S. holder that owns common shares or 
ADSs during any taxable year that we are treated as a PFIC would generally be required to file IRS form 8621, as well as comply with 
additional annual filing requirements imposed under recently enacted legislation.  U.S. holders should consult their own tax advisors 
regarding the application of the PFIC rules (including any information reporting requirements in connection therewith) to the common 
shares or ADSs. 

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Information Reporting and Backup Withholding 

In general, information reporting requirements will apply to dividends in respect of our common shares or ADSs or the proceeds 
received on the sale, exchange, or redemption of our ADSs, in each case to the extent treated as being paid within the United States (and in 
certain cases, outside of the United States) to a U.S. holder unless a U.S. holder establishes its status as an exempt recipient, and backup 
withholding may apply to such amounts if the U.S. holder does not establish its status as an exempt recipient or fails to provide a correct 
taxpayer identification number and certify that such U.S. holder is not subject to backup withholding. The amount of any backup 
withholding from a payment to a U.S. holder will be allowed as a refund or credit against such U.S. holder's U.S. federal income tax 
liability provided the U.S. holder timely furnishes the required information to the IRS. 

In addition, U.S. holders should be aware that recently enacted legislation imposes new reporting requirements with respect to the 
holding of certain foreign financial assets, including stock of foreign issuers which is not held in an account maintained by a financial 
institution, if the aggregate value of all of such assets exceeds $50,000.  U.S. holders should consult their own tax advisors regarding the 
application of the information reporting rules to our common shares and ADSs and the application of the recently enacted legislation to 
their particular situation. 

F.    Dividends and Payments Agents  

Not applicable.  

G.    Statements by Experts 

Not applicable.  

H.    Documents on Display 

We are subject to the periodic reporting and other informational requirements of the U.S. Securities Exchange Act of 1934, as 
amended and supplemented, or the Exchange Act.  Accordingly, we are required to file reports and other information with the SEC.  You 
may inspect and copy reports and other information filed by us at the public reference facilities maintained by the SEC at 100 F Street, 
N.W., Washington D.C. 20549.  You may obtain copies of these materials upon written request from the Public Reference Section of the 
Commission at 450 Fifth Street, N.W., Washington D.C. 20549 for certain fees.  You may also inspect this material at the offices of the 
NYSE at 20 Broad Street, New York, New York 10005.  In addition to the public reference facilities maintained by the SEC and the 
NYSE, you may obtain a copy of the annual report, upon written request from the depositary for our ADSs at its corporate trust office 
located at 101 Barclay Street, New York, New York 10286. 

We also furnish to the depositary annual reports in English including audited annual financial statements and unaudited quarterly 
financial statements in English for each of the first three quarters of the fiscal year.  We also furnish to the depositary English translations 
or summaries of all notices of shareholders’ meetings and other reports and communications that are made generally available to holders of 
common shares.  

I.     Subsidiary Information  

Not applicable. 

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ITEM 11.      QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 

We are exposed to various market risks—in particular, foreign currency risk and interest rate risk.  We are exposed to foreign currency 

risk because a substantial portion of our financial indebtedness is denominated in foreign currencies, primarily the U.S. dollar, while we 
generate all of our net operating revenues in reais.  Similarly, we are subject to interest rate risk based upon changes in interest rates, which 
affect our net financial expenses.  For further information on our market risks, see Note 3.1 to our consolidated financial statements. 
ITEM 12.      DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES 
A.    Debt Securities 

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Not applicable.   

B.    Warrants and Rights 

Not applicable.   

C.    Other Securities 

Not applicable. 

D.    American Depositary Shares 

In the United States, our common shares trade in the form of ADS.  Each ADS represents two common shares, issued by The Bank of 

New York Mellon, as Depositary pursuant to a Deposit Agreement.  The ADSs commenced trading on the NYSE on May 10, 2002. 

Fees and Expenses 

The following table summarizes the fees and expenses payable by holders of ADRs: 

Persons depositing common shares or ADR holders must pay: 
US$5.00 (or less) per 100 ADSs (or portion of 100 ADSs) 

   For: 

Issuance of ADSs, including issuances resulting from a distribution of 
common shares or rights or other property 
Cancellation of ADSs for the purpose of withdrawal, including if the 
deposit agreement terminates 

US$0.02 (or less) per ADS (to the extent not prohibited by the rules of any 
stock exchange on which the ADSs are listed for trading) 

Any cash distribution to you 

A fee equivalent to the fee that would be payable if securities distributed to 
you had been common shares and the shares had been deposited for 
issuance of ADSs 

Distribution of securities distributed to holders of deposited securities 
which are distributed by the depositary to ADR holders 

US$0.02 (or less) per ADS per calendar year (to the extent the depositary 
has not collected a cash distribution fee of $.02 per ADS during the year) 

Depositary services 

Registration or transfer fees 

Transfer and registration of common shares on our common share register 
to or from the name of the depositary or its agent when you deposit or 
withdraw common shares 

Expenses of the depositary in converting foreign currency to U.S. dollars 

Cable, telex and facsimile transmissions (when expressly provided in the 
deposit agreement) 

Expenses of the depositary 

Taxes and other governmental charges the depositary or the custodian have 
to pay on any ADR or common share underlying an ADR, for example, 
stock transfer taxes, stamp duty or withholding taxes 

As necessary 

Any charges incurred by the depositary or its agents for servicing the 
deposited securities 

No charges of this type are currently made in the Brazilian market 

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Payment of Taxes  

The depositary may deduct the amount of any taxes owed from any payments to you.  It may also sell deposited securities, by public or 

private sale, to pay any taxes owed.  You will remain liable if the proceeds of the sale are not sufficient to pay the taxes.  If the depositary 
sells deposited securities, it will, if appropriate, reduce the number of ADSs to reflect the sale and pay to you any proceeds, or send to you 
any property, remaining after it has paid the taxes.  

Reimbursement of Fees 

The Bank of New York Mellon, as depositary, has agreed to reimburse us for expenses we incur that are related to establishment and 
maintenance expenses of the ADS program.  The depositary has agreed to reimburse us for our continuing annual stock exchange listing 
fees.  The depositary has also agreed to pay the standard out-of-pocket maintenance costs for the ADRs, which consist of the expenses of 
postage and envelopes for mailing annual and interim financial reports, printing and distributing dividend checks, electronic filing of 
United States federal tax information, mailing required tax forms, stationery, postage, facsimile, and telephone calls.  It has also agreed to 
reimburse us annually for certain investor relationship programs or special investor relations promotional activities.  In certain instances, 
the depositary has agreed to provide additional payments to us based on any applicable performance indicators relating to the ADR 
facility.  There are limits on the amount of expenses for which the depositary will reimburse us, but the amount of reimbursement available 
to the Company is not necessarily tied to the amount of fees the depositary collects from investors. 

The depositary collects its fees for delivery and surrender of ADSs directly from investors depositing shares or surrendering ADSs for 

the purpose of withdrawal or from intermediaries acting for them.  The depositary collects fees for making distributions to investors by 
deducting those fees from the amounts distributed or by selling a portion of distributable property to pay the fees.  The depositary may 
collect its annual fee for depositary services by deduction from cash distributions or by directly billing investors or by charging the book-
entry system accounts of participants acting for them.  The depositary may generally refuse to provide fee-attracting services until its fees 
for those services are paid. 

Reimbursement of Fees Incurred in 2010 

From January 1, 2010 until the date of this annual report, the Company received from the depositary US$595,443 for standard out-of-

pocket maintenance costs for the ADRs (consisting of the expenses of postage and envelopes for mailing annual and interim financial 
reports, printing and distributing dividend checks, electronic filing of U.S. Federal tax information, mailing required tax forms, stationery, 
postage, facsimile, and telephone calls), any applicable performance indicators relating to the ADR facility, underwriting fees and legal 
fees. 

PART II 

ITEM 13.      DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES 

Not applicable.   

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ITEM 14.      MATERIAL MODIFICATIONS TO THE RIGHTS OF SECURITY HOLDERS AND USE OF PROCEEDS 

Table of Contents

Not applicable.   

ITEM 15.      CONTROLS AND PROCEDURES 
a) Disclosure Controls and Procedures. 

We carried out an evaluation under the supervision of and with the participation of our management, including our Chief Executive 

Officer and Chief Financial Officer and Investor Relations Officer, of the effectiveness of the design and operation of our disclosure 
controls and procedures, including those defined in the United States Exchange Act Rule 13a-15(e), as of the year ended December 31, 
2010.   

As a result of this evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and 
procedures were both designed and effective at the reasonable assurance level as of December 31, 2010, that the information required to be 
disclosed in our filings and submissions under the Exchange Act is recorded, processed, summarized, and reported within the time periods 
specified by the SEC’s rules and forms, and that this information is accumulated and communicated to our management, including our 
Chief Executive Officer and Chief Financial Officer and Investor Relations Officer, as appropriate to allow timely decisions regarding 
required disclosure. 

b) Management’s Report on Internal Control over Financial Reporting 

Our management’s annual report on internal control over financial reporting is included in this annual report on page F-2. 

c) Attestation Report of the Registered Public Accounting Firm 

The opinion by our independent registered public accounting firm on the effectiveness of our internal control over financial reporting 

is included in the report of PricewaterhouseCoopers Auditores Independentes that is included in this annual report on page F-3. 

d) Changes in internal control over financial reporting 

There have been no changes in our internal control over financial reporting that occurred during the fiscal year ended December 31, 

2010 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 
ITEM 16       [RESERVED] 
A.    Audit Committee Financial Expert 

At our board meeting held on June 26, 2006, we established an audit committee, as defined under section 3(a)(58) of the Exchange 
Act.  Our board of directors has determined that Jerônimo Antunes qualifies as an “audit committee financial expert” as defined for the 
purposes of this Item 16A in Item 16 of Form 20-F.  Jerônimo Antunes is an “independent director” within the meaning of the SEC rules.  

B.    Code of Ethics  

We have adopted a code of business conduct and ethics, as defined in Item 16B of Form 20-F under the Exchange Act.  Our code of 
business conduct and ethics, called Code of Ethics and Conduct, applies to all of our employees, including our directors, chief executive 
officer, chief financial officer and chief accounting officer, as well as our suppliers and third-party contractors.  Our Code of Ethics and 
Conduct is available on our web site at http://www.sabesp.com.br at the following location:  Investors Relations – Corporate Governance.  
If we amend the provisions of our Code of Ethics and Conduct, or if we grant any waiver of such provisions, we will disclose the 
amendment or waiver on our web site at the same address.  You can obtain copies of our Code of Ethics and Conduct, without charge, upon 
request to sabesp.ri@sabesp.com.br. 

133 

  
C.    Principal Accountant Fees and Services 

PricewaterhouseCoopers Auditores Independentes served as our independent registered public accounting firm for the years ended 

December 31, 2008, 2009 and 2010. 

The following table presents the aggregate fees for professional services and other services rendered to us by PricewaterhouseCoopers 

Auditores Independentes in 2009 and 2010:   

Table of Contents

Audit Fees(1) 
Audit-Related Fees 
Tax Fees 
All Other Fees 
Total 
_________________ 

Year ended December 31, 
2010 
2009 

(in millions of reais)  

2.3 
- 
- 
- 
2.3 

2.6 
- 
- 
- 
2.6 

(1)   Audit Fees are the fees billed by PricewaterhouseCoopers for the audit of our annual financial statements, reviews of interim financial statements and attestation services 

that are provided in connection with statutory and regulatory filings or engagements. 

Pre-approval policies and procedures 

Pursuant to Brazilian law, our board of directors is responsible, among other matters, for the selection, dismissal and oversight of our 
independent registered public accounting firm.  Our management is required to obtain the board of directors’ approval before engaging an 
independent registered public accounting firm to provide any audit or permitted non-audit services to us.  The Brazilian Federal and State 
Public Bidding Laws also apply to us with respect to obtaining services from third parties for our business, including the services provided 
by our independent registered public accounting firm.  As part of the bidding process, the independent registered public accounting firm is 
required to submit proposals, and are then selected by us based on certain criteria including technical expertise and cost. 

During 2009 and 2010, PricewaterhouseCoopers Auditores Independentes did not provide non-audit services to us.   

D.    Exemptions from the Listing Standards for Audit Committees 

None. 

E.    Purchases of Equity Securities by Issuer and Affiliated Purchasers  

Not applicable.  

F.    Change in Registrant’s Certifying Accountant 

Not applicable. 

G.    Corporate Governance 

Significant Differences between our Corporate Governance Practices and NYSE Corporate Governance Standards 

We are subject to the NYSE corporate governance listing standards.  As a foreign private issuer, the standards applicable to us are 
considerably different than the standards applied to U.S. listed companies.  Under the NYSE rules, we are required only to:  (a) have an 
audit committee or audit board, pursuant to an applicable exemption available to foreign private issuers, that meets certain requirements, as 
discussed below, (b) provide prompt certification by our chief executive officer of any material non-compliance with any corporate 
governance rules, and (c) provide a brief description of the significant differences between our corporate governance practices and the 
NYSE corporate governance practice required to be followed by U.S. listed companies.  The discussion of the significant differences 
between our corporate governance practices and those required of U.S. listed companies follows below. 

134 

  
  
  
  
  
  
Table of Contents

Majority of Independent Directors 

The NYSE rules require that a majority of the board must consist of independent directors.  Independence is defined by various 

criteria, including the absence of a material relationship between the director and the listed company.  Brazilian law does not have a similar 
requirement.  Under Brazilian law, neither our board of directors nor our management is required to test the independence of directors 
before their election to the board.  However, both the Brazilian Corporate Law and the CVM have established rules that require directors to 
meet certain qualification requirements and that address the compensation and duties and responsibilities of, as well as the restrictions 
applicable to, a company’s executive officers and directors.  Our board of directors must have a minimum of five members and 20% of the 
board (even if the board consists of greater than five members) must be independent as defined under Novo Mercado Regulations.  
Currently, three of our ten directors are independent, pursuant to the Novo Mercado Listing Regulations.  We believe these rules provide 
adequate assurances that our directors are independent; however, they do not require that we have a majority of independent directors, as 
required under the NYSE rules. 

Executive Sessions 

NYSE rules require that the non-management directors must meet at regularly scheduled executive sessions without management 
present.  The Brazilian Corporate Law does not have a similar provision.  According to the Brazilian Corporate Law, up to one-third of the 
members of the board of directors can be elected from management.  There is no requirement that non-management directors meet 
regularly without management.  Our chairperson and Chief Executive Officer is a member of our board of directors.  All other members of 
our Board of Directors meet the NYSE’s definition of “non-management” directors.  The non-management directors on our board do not 
typically meet in executive session.  Our board of directors consists of ten non-management directors. 

Fiscal Committee 

Under the Brazilian Corporate Law, the Conselho Fiscal, or fiscal committee, is a corporate body independent of management and a 

company’s external auditors.  The fiscal committee may be either permanent or non-permanent, in which case it is appointed by the 
shareholders to act during a specific fiscal year.  A fiscal committee is not equivalent to, or comparable with, a U.S. audit committee.  The 
primary responsibility of the fiscal committee is to review management’s activities and a company’s financial statements, and to report its 
findings to a company’s shareholders.  The Brazilian Corporate Law requires fiscal committee members to receive as remuneration at least 
10% of the average annual amount paid to a company’s executive officers.  The Brazilian Corporate Law requires a fiscal committee to be 
composed of a minimum of three and a maximum of five members and their respective alternates. 

Under the Brazilian Corporate Law, the fiscal committee may not contain members that (i) are on our board of directors, (ii) are on the 

board of executive officers, (iii) are employed by us or a controlled company, or (iv) are spouses or relatives of any member of our 
management, up to the third degree. 

Our fiscal committee consists of five members and five alternates and the members meet once a month. 

Audit Committee 

NYSE rules require that listed companies have an audit committee that (i) is composed of a minimum of three independent directors 

who are all financially literate, (ii) meets the SEC rules regarding audit committees for listed companies, (iii) has at least one member who 
has accounting or financial management expertise and (iv) is governed by a written charter addressing the committee’s required purpose 
and detailing its required responsibilities.  However, as a foreign private issuer, we need only to comply with the requirement that the audit 
committee meet the SEC rules regarding audit committees for listed companies to the extent compatible with Brazilian Corporate Law.  
Our audit committee, which is not equivalent to, or comparable with, a U.S. audit committee, provides assistance to our board of directors 
on matters involving accounting, internal controls, financial reporting and compliance.  The audit committee recommends the appointment 
of our independent auditors to our board of directors and reviews the compensation of our independent auditors and helps coordinate their 
activities.  It also evaluates the effectiveness of our internal financial and legal compliance controls.  The audit committee comprises three 
members elected by the board of directors for a one-year term with the right to re-election, all three of which are independent.  The current 
members of our audit committee are Jerônimo Antunes, Reinaldo Guerreiro and Heraldo Gilberto de Oliveira.  All members meet the 
independent membership requirements of the SEC and NYSE as well as other NYSE requirements.  Jerônimo Antunes is the committee’s 
“financial expert” within the scope of the SEC rules covering the disclosure of financial experts on audit committees in periodic filings 
pursuant to the U.S. Securities Exchange Act of 1934. 

135 

  
Table of Contents

Nomination/Corporate Governance and Compensation Committees 

NYSE rules require that listed companies have a nominating/corporate governance committee and a compensation committee 

composed entirely of independent directors and governed by a written charter addressing the committee’s required purpose and detailing its 
required responsibilities.  Required responsibilities for the nominating/corporate governance committee include, among other things, 
identifying and selecting qualified board member nominees and developing a set of corporate governance principles applicable to the 
company.  Required responsibilities for the compensation committee include, among other things, reviewing corporate goals relevant to the 
chief executive officer’s compensation, evaluating the chief executive officer’s performance, approving the chief executive officer’s 
compensation levels and recommending to the board non-chief executive officer compensation, incentive-compensation and equity-based 
plans. 

We are not required under applicable Brazilian law to have a nomination/corporate governance committee or compensation 

committee.  Under the Brazilian Corporate Law, the total amount available for compensation of our directors and executive officers and for 
profit-sharing payments to our executive officers is established by our shareholders at the annual general meeting.  The board of directors is 
then responsible for determining the individual compensation and profit-sharing of each executive officer, as well as the compensation of 
our board and committee members.  In making such determinations, the board reviews the performance of the executive officers, including 
the performance of our chief executive officer, who typically excuses himself from discussions regarding his performance and 
compensation. 

Shareholder Approval of Equity Compensation Plans 

NYSE rules require that shareholders be given the opportunity to vote on all equity compensation plans and material revisions thereto, 

with limited exceptions. We do not currently have any equity compensation plan.  If such a plan were to be implemented, there is no 
requirement under Brazilian Corporate Law for the plan to be approved by our shareholders.  However, if the issuance of new shares in 
connection with any equity compensation plan exceeded the authorized capital under our bylaws, the increase in capital would require 
shareholder approval. 

Corporate Governance Guidelines 

NYSE rules require that listed companies adopt and disclose corporate governance guidelines. We are in compliance with the adoption 

of corporate governance provisions and guidelines required under the Novo Mercado Regulations.  Additionally, under the CVM’s 
guidelines, we have established (i) the Policy of Publicizing Acts or Relevant Facts and the Preservation of Confidentiality which requires 
us to publicly disclose all relevant information and (ii) the Securities Negotiation Policy which requires management to inform the CVM 
and the BM&FBOVESPA of any purchases or sales of SABESP’s securities.  We believe the corporate governance guidelines applicable 
to us under the Novo Mercado Regulations, as well as the CVM, do not conflict with the guidelines established by the NYSE. Our 
corporate governance guidelines and practices are available in our website at www.sabesp.com.br and in our annual management report. 

Code of Business Conduct and Ethics 

NYSE rules require that listed companies adopt and disclose a code of business conduct and ethics for directors, officers and 
employees, and promptly disclose any waivers of the code for directors or executive officers. Applicable Brazilian law does not have a 
similar requirement. We have decided to adopt and disclose a code of ethics and conduct applicable to all our officers, directors and 
employees.  The adoption and disclosure of a formal code is not required under the Brazilian Corporate Law.  We believe our formal code 
addresses the matters required to be addressed by the applicable NYSE and SEC rules. 

136 

  
Internal Audit Function 

NYSE rules require that listed companies maintain an internal audit function to provide management and the audit committee with 
ongoing assessments of the company’s risk management processes and system of internal control.  Our internal audit department is under 
the supervision of our Chief Executive Officer and our audit committee and is responsible for our compliance with the requirements of 
Section 404 of the U.S. Sarbanes Oxley Act of 2002 regarding internal control over financial reporting.  Our internal audit department 
reports to our chief executive officer and the audit committee. 

PART III 

Table of Contents

ITEM 17.      FINANCIAL STATEMENTS 

We have responded to Item 18 in lieu of responding to this Item. 

ITEM 18.      FINANCIAL STATEMENTS 

The following financial statements, together with the Report of Independent Registered Public Accounting Firms, are filed as part of 

this annual report.  See “Index to Consolidated Financial Statements.” 
ITEM 19.      EXHIBITS 
Item 
1.1 
4.1 

4.2 

4.3 

4.4 

4.5 

4.6 

4.7 

Description 
By-laws of the Registrant (English translation) (incorporated by reference to the Form 6-K filed on June 9, 2011). 
Agreement  between  the  Registrant  and  the  State  Department  of  Water  and  Energy  (Departamento  de  Águas  e 
Energia Elétrica—DAEE), dated April 24, 1997 (English translation) (incorporated by reference to Exhibit 10.1 to 
the Registrant’s Registration Statement on Form F-1 filed on April 8, 2002 (the “April 8, 2002 Form F-1”). 
Protocol of Understanding between the Registrant and the State of São Paulo, dated September 30, 1997 (English 
translation) (incorporated by reference to Exhibit 10.2 to the April 8, 2002 Form F-1). 
Agreement between the Registrant and the State of São Paulo, through the Secretariat of Finance, dated September 
10, 2001 (English translation) (incorporated by reference to Exhibit 10.3 to the April 8, 2002 Form F-1). 
Agreement  between  the  Registrant  and  the  State  of  São Paulo,  through  the  Secretariat  of  the  Treasury,  dated 
December 11, 2001 (English translation) (incorporated by reference to Exhibit 10.4 to the April 8, 2002 Form F-1). 
Amendment to the Agreement, dated April 24, 1997, between the Registrant and the DAEE, dated March 16, 2000 
(English translation) (incorporated by reference to Exhibit 10.5 to the April 8, 2002 Form F-1). 
Amendment to the Agreement, dated April 24, 1997, between the Registrant and the DAEE, dated November 21, 
2001 (English translation) (incorporated by reference to Exhibit 10.6 to the April 8, 2002 Form F-1). 
First Amendment to the Agreement, dated December 11, 2001, between the Registrant and the State of São Paulo, 
dated March 22, 2004.  (English Translation) (incorporated by reference to Exhibit 4.7 to the Form 20-F filed on 
June 28, 2004). 

137 

  
Item 
4.8 

4.9 

4.10 

4.11 

4.12   

4.14 

4.15 

4.16 

11.1 

12.1 

12.2 

13.1 

13.2 

Table of Contents

Description 
Second  Amendment  to  the  Agreement,  dated  December 11,  2001,  between  the  Registrant  and  the  State  of  São 
Paulo,  dated  December  28,  2007.   (English  Translation)  (incorporated  by  reference  to  the Form  6-K  filed  on 
February 25, 2008). 
Third Amendment to the Agreement, dated December 11, 2001, between the Registrant and the State of São Paulo, 
dated November 17, 2008.  (English Translation) (incorporated by reference to the Form 6-K filed on December 23, 
2008). 
Commitment  Agreement,  between  the  Registrant  and  the  State  of  São  Paulo,  dated  March  26,  2008.   (English 
Translation) (incorporated by reference to the Form 6-K filed on April 28, 2008). 
Agreement  Executed  between  the  Registrant  and  the  São  Paulo  City  Government,  dated  November  14,  2007 
(English Translation) (incorporated by reference to the Form 6-K filed on March 12, 2008). 
Amendment  to  the  Agreement  Executed  between  the  Registrant  and  the  São  Paulo  City  government,  dated 
February 10, 2008 (English Translation) (incorporated by reference to the Form 6-K filed on May 12, 2008). 
The  Audit  Committee  Charter  dated  February  11,  2010  (English  Translation)  (incorporated  by  reference  to 
the Form 6-K filed on April 20, 2010). 
Convention between the State and the city of São Paulo, dated June 23, 2010, with the intermediation and consent 
of the Registrant and of the ARSESP (English Translation) (incorporated by reference to the Form 6-K filed on July 
13, 2010). 
Contract to provide public water supply and sewage services, among the Registrant, the State and the city of São 
Paulo,  dated  June  23,  2010  (English  Translation)  (incorporated  by  reference  to  the  Form  6-K  filed  on  July  13, 
2010). 
Code of Ethics and Conduct dated January 26, 2006 (English Translation) (incorporated by reference to the Form 6-
K filed on July 7, 2008). 
Certification  of Dilma Seli Pena, Chief Executive Officer, pursuant to Section  302 of the Sarbanes Oxley Act of 
2002. 
Certification of Rui de Britto Álvares Affonso, Chief Financial Officer and Investor Relations Officer, pursuant to 
Section 302 of the Sarbanes Oxley Act of 2002. 
Certification of Dilma Seli Pena, Chief Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant 
to Section 906 of the Sarbanes Oxley Act of 2002. 
Certification of Rui de Britto Álvares Affonso, Chief Financial Officer and Investor Relations Officer, pursuant to 
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes Oxley Act of 2002. 

138 

  
The  registrant  hereby  certifies  that  it  meets  all  of  the  requirements  for  filing  on  Form  20-F  and  that  it  has  duly  caused  and 

authorized the undersigned to sign this annual report on its behalf. 

SIGNATURES 

Table of Contents

COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO 

PAULO - SABESP 

By:     /s/ Dilma Seli Pena                                                   

Name:   Dilma Seli Pena  
Title:      Chief Executive Officer 

By:     /s/ Rui de Britto Álvares Affonso                          

Name:   Rui de Britto Álvares Affonso 
Title:      Chief Financial Officer and Investor Relations Officer 

Date:      June 27, 2011 

139 

  
Companhia de Saneamento 
Básico do Estado de São Paulo - 
SABESP 
IFRS Consolidated Financial Statements  
as of and for the years ended  
December 31, 2010 and 2009 

  
  
  
Management Report on Internal Control over Financial Reporting 

The management of Companhia de Saneamento Básico do Estado de São Paulo - SABESP (the "Company") is responsible for establishing 
and maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial 
reporting as defined in Rules 13a-15(f) under the U.S. Exchange Act Rule. 

The Company's internal control over financial reporting is a process designed by, or under the supervision of, the Company's Chief Executive 
Officer and Chief Financial Officer and effected by the Company's Board of Directors, Audit Committee, management, and other personnel to 
provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external 
purposes in accordance with generally accepted accounting principles. The Company's internal control over financial reporting includes 
those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the 
transactions and dispositions of the assets of the Company; (2) provide reasonable assurance that transactions are recorded as necessary to 
permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures 
of the Company are being made only in accordance with authorizations of management and directors of the Company; and (3) provide 
reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company's assets that 
could have a material effect on the financial statements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detect material misstatements on a timely 
basis. Therefore even those systems determined to be effective can provide only reasonable assurance with respect to financial statement 
preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may 
become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. 

Management assessed the effectiveness of the Company's internal control over financial reporting as of December 31, 2010, based on the 
criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway 
Commission - COSO. Based on that assessment, management has concluded that as of December 31, 2010, the Company's internal control 
over financial reporting is effective. As a result of this evaluation, the principal executive officer and principal financial officer of the 
Company concluded that its disclosure controls and procedures were both designed and effective at the reasonable assurance level as of 
December 31, 2010. 

The effectiveness of the Company's internal control over financial reporting as of December 31, 2010 has been audited by 
PricewaterhouseCoopers Auditores Independentes, an independent registered public accounting firm, as stated in their report which appears 
herein. 

_________________________ 
/S/ Dilma Seli Pena 
Chief Executive Officer 
June 2, 2011 

_________________________ 
/s/ Rui de Britto Álvares Affonso 
Chief Financial Officer and  
Investor Relations Officer 
June 2, 2011 

F-2 

  
  
  
  
  
  
  
  
  
Report of Independent Registered  
Public Accounting Firm 

To the Board of Directors and Shareholders 
Companhia de Saneamento Básico do Estado de São Paulo - SABESP 

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income, of comprehensive income, 
of changes in equity and of cash flows present fairly, in all material respects, the financial position of Companhia de Saneamento Básico do 
Estado de São Paulo - SABESP (the "Company") as of December 31, 2010 and 2009, and the results of their operations and their cash flows 
for the three-years period ended December 31, 2010 in conformity with International Financial Reporting Standards as issued by the 
International Accounting Standards Board. Also in our opinion, the Company maintained, in all material respects, effective internal control 
over financial reporting as of December 31, 2010, based on criteria established in Internal Control - Integrated Framework issued by the 
Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for these 
financial statements, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal 
control over financial reporting, included in the accompanying "Management Report on Internal Control over Financial Reporting". Our 
responsibility is to express opinions on these financial statements and on the Company's internal control over financial reporting based on 
our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board 
(United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial 
statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material 
respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the 
financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall 
financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal 
control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating 
effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered 
necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions. 

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles. A company's internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of 
records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide 
reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally 
accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of 
management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized 
acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of 
any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in 
conditions, or that the degree of compliance with the policies or procedures may deteriorate. 

São Paulo, Brazil 
June 2, 2011 

/s/ PricewaterhouseCoopers 
Auditores Independentes 

F-3 

  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Consolidated Balance Sheets as of December 31, 2010 and 2009 
Amounts in thousands of reais 

Assets 

   December  December   

Note 

31, 2010 

31, 2009 Liabilities and equity 

   December  December 
 Note  31, 2010  31, 2009

Current assets 
     Cash and cash equivalents 
     Restricted cash 
     Customer accounts receivable, net 
     Accounts receivable from related party, net
     Inventories 
     Taxes recoverable 
     Other assets 

  Current liabilities 

771,008     Accounts payable to suppliers and contractors   
112,750     Other trade accounts payable 

5  1,989,179 
302,570 
6 
971,318  1,179,730     Current portion of long-term loans and financing 
7 
135,987     Accrued payroll and related charges 
137,772 
8 
39,877     Income taxes payable 
36,096 
3,017     Other taxes payable 
108,675 
28,754     Interest on shareholders' equity payable 
44,511 

   3,590,121  2,271,123     Other liabilities 

      Provisions 

195,765

239,494
12  1,242,143  1,009,947
239,152

144,043 
378,256 

246,467 
- 
158,050 
354,254 
766,603 
216,298 

13 

15 

88,637

130,230

365,442

643,863

168,600

Total current assets 

Noncurrent assets 
     Customer accounts receivable, net 
     Accounts receivable from related party, net
     Indemnities receivable 
     Escrow deposits 
     Deferred income taxes 
     Intangible assets, net 
     Property, plant and equipment, net 
     Other assets 

  Total current liabilities 

   3,506,114  3,081,130

7 
8 
9 

352,839 
231,076 
146,213 
43,543 
78,440 

266,543   
260,365 Noncurrent liabilities 
146,213     Loans and financing 
46,365     Other taxes payable 
43,636     Accrued taxes on revenues 

14 
10  18,546,836 16,917,417     Provisions  
11 

249,606 
111,910 

190,430     Pension obligations 
101,032     Other liabilities 

12  7,022,472  5,548,023
13 
85,029

53,045 
112,962 
693,227 

120,417

15 
824,957
16  1,804,038  1,831,753
313,231

476,926 

Total noncurrent assets 

   19,760,463 17,972,001 Total noncurrent liabilities 

  10,162,670  8,723,410

  Equity 
      Capital stock 
      Capital reserve 
      Earnings reserves and retained earnings 

  Total equity 

17 
   6,203,688  6,203,688
124,255
   3,353,857  2,110,641

124,255 

   9,681,800  8,438,584

Total assets 

  23,350, 584 20,243,124 Total equity and liabilities 

  23,350,584 20,243,124

The accompanying notes are an integral part of these financial statements. 

F-4 

  
  
  
  
  
  
  
 
  
  
  
    
 
  
  
 
  
  
 
  
  
 
  
 
  
 
  
  
 
  
  
 
  
 
  
  
  
  
 
 
  
  
  
  
    
 
  
  
 
  
  
 
 
  
  
 
 
  
  
 
 
  
 
 
  
 
 
  
 
  
  
  
  
    
 
  
  
 
 
  
  
  
    
 
  
  
 
  
  
  
 
  
 
  
  
  
 
  
  
  
 
  
  
  
  
 
  
  
  
    
 
  
  
 
  
  
  
 
  
  
  
    
 
  
  
 
  
  
  
    
 
  
  
 
 
  
  
  
    
 
  
  
 
 
 
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Consolidated Statements of Income 
Years Ended December 31, 2010, 2009 and 2008 
Amounts in thousands of reais, unless otherwise indicated 

Continuing operations: 
      Net revenue from sales and services 
      Cost of sales and services 

Gross profit 

      Selling expenses 
      Administrative expenses 
      Other operating income (expenses), net 

Operating profit 

      Financial expenses 
      Financial income 
      Inflation adjustment and foreign exchange result, net 

Financing cost, net 

Profit before income tax and social contribution 
      Income tax and social contribution 
             Current 
             Deferred 

Net income for the year  

attributable to the Company's shareholders 

Note  

2010  

2009  

2008

20  
21  

21  
21  
23  

22  
22  
22  

9,231,027  
(5,194,548)  

8,579,519  
(5,087,254)  

7,809,294
(4,482,853)

4,036,479  

3,492,265  

3,326,441

(712,946)  
(653,200)  
1,830  

(610,422)  
(717,100)  
(44,425)  

(499,701)
(579,981)
(125,494)

2,672,163  

2,120,318  

2,121,265

(789,467)  
343,914  
66,146  

(765,197)  
226,782  
528,449  

(842,784)
308,612
(438,869)

(379,407)  

(9,966)  

(973,041)

2,292,756  

2,110,352  

1,148,224

14  
14  

(697,115)  
34,806  

(748,708)  
146,103  

(548,373)
263,095

(662,309)  

(602,605)  

(285,278)

1,630,447

1,507,747  

862,946

Earnings per share - basic and diluted (in reais)  

18  

7.16  

6.62  

3.79

The Company does not have cumulative comprehensive income; therefore, the statement of comprehensive income has not been presented in 
the consolidated financial statements 

The accompanying notes are an integral part of these financial statement. 

F-5 

  
  
  
  
  
  
  
  
  
  
  
   
   
   
 
   
   
   
 
  
   
   
   
 
   
  
   
   
   
 
  
   
   
   
 
   
  
   
   
   
 
  
   
   
   
 
   
  
   
   
   
 
   
   
   
   
 
  
   
   
   
 
  
   
   
 
  
  
   
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Consolidated Statements of Changes in Equity 
as of December 31, 2010, 2009 and 2008 
Amounts in thousands of reais unless otherwise indicated 

Attributable to owners of the parent 

Earnings reserves 

Note   Capital stock   

Capital 
reserve 

  Legal reserve    Investments 
reserve 

   Additional     Retained 
   earnings 
   proposed 
(losses) 
dividend 

Total 

Balances as of January 1, 2008 
Comprehensive income 

Net income for the year 

Total comprehensive income 

Transactions with owners 

Capitalization of investments reserve 
Allocation to legal reserve 
Interest on shareholders' equity (R$ 1.30 per share) 
Allocation from investments reserve to retained 

earnings (losses) 

17(a)  
17(e)  

Total transactions with owners 

Balances as of December 31, 2008 
Comprehensive income 

Net income for the year 

Total comprehensive income 

Transactions with owners 

Allocation to legal reserve 
Interest on shareholders' equity (R$ 1.73 per share) 
Allocation to investments reserve 

17(e)  
17(c)  

Total transactions with owners 

Balances as of December 31, 2009 
Comprehensive income 

Net income for the year 

Total comprehensive income 

Transactions with owners 

Allocation to legal reserves 
Interest on shareholders' equity (R$ 1.70 per share) 
Additional proposed dividends 
Allocation to investments reserve 

Total transactions with owners 

Balances as of December 31, 2010 

3,403,688  

124,255  

306,654  

3,609,580  

-  

-  

2,800,000  
-  
-  
-  

2,800,000  

-  

-  

-  
-  
-  
-  

-  

-  

-  

-  

-  

-  
3,178  
-  
-  

(2,800,000)  
-  
-  
(122,361)  

3,178  

(2,922,361)  

6,203,688  

124,255  

309,832  

687,219  

-  

-  

-  
-  
-  

-  

-  

-  

-  
-  
-  

-  

-  

-  

-  

-  

68,694  
-  
-  

-  
-  
1,044,896  

68,694  

1,044,896  

6,203,688  

124,255  

378,526  

1,732,115  

-  

-  

-  

-  

-  

-  

-  

-  
-  
-  
-  

-  

-  

-  

-  

-  
-  
-  

-  

-  

-  

-  

(685,941)  

6,758,236

862,946  

862,946

862,946  

862,946

-  
(3,178)  
(296,188)  
122,361  

-

-

(296,188)

-

(177,005)  

(296,188)

-  

7,324,994

1,507,747  

1,507,747

1,507,747  

1,507,747

(68,694)  
(394,157)  
(1,044,896 )  

-

(394,157)

-

(1,507,747)  

(394,157)

-  

8,438,584

1,630,447  

1,630,447

1,630,447  

1,630,447

17 (e)  
17 (c)  

-  

-  

-  
-  
-  
-  

-  

-  

-  

-  
-  
-  
-  

-  

81,522  
-  
-  
-  

-  
-  
-  
1,092,933  

-  
-  
68,761  
-  

(81,522)  
(387,231)  
(68,761)  
(1,092,933)  

-

(387,231)

-

-

-  

-  

-  

1,630,447  

(387,231)

6,203,688  

124,255  

460,048  

2,825,048  

68,761  

-  

9,681,800

The accompanying notes are an integral part of these financial statement. 

F-6 

  
  
  
  
  
  
  
   
  
  
  
  
  
   
  
  
  
  
  
  
  
  
  
  
  
   
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
  
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
  
   
   
   
   
   
   
   
 
   
  
   
   
   
   
   
   
   
 
   
 
 
   
   
 
   
   
   
   
   
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Consolidated Statements of Cash Flows 
Years Ended December 31, 2010, 2009 and 2008 
Amounts in thousands of reais unless otherwise indicated 

Profit before income tax and social contribution 

2,292,756  

2,110,352  

1,148,224

Note  

2010  

2009  

2008

Adjustments for: 
      Depreciation and amortization 
      Losses on disposal of property, plant and equipment and intangible assets
      Allowance for doubtful accounts expense 
      Change in provisions 
      Interest on loans and financing 
      Foreign exchange and monetary (gains) losses   
             on loans and financing  
      Interest and inflation adjustment gains 
       Provision from São Paulo agreement 
       Provision for defined contribution plan 
      Fair value margin on intangible assets arising from concession contracts 
      Other adjustments 

Adjusted net income  

Changes in assets 
      Customer accounts receivable 
      Accounts receivable from related party 
      Inventories 
      Taxes recoverable 
      Indemnities receivable 
      Escrow deposits 
      Other assets  

Changes in liabilities 
      Accounts payable to suppliers and contractors 
      Other trade accounts payable 
      Accrued payroll and related charges 
      Other taxes payable 
      Accrued taxes on revenues 
      Provisions 
      Pension obligations 
      Other liabilities 

Changes in assets and liabilities 

Cash generated from operations 

552,184  
16,385  
402,694  
352,614  
450,297  

21,139
(55,804)  
80,368  
32,587  
(49,603)  
19,331  

562,236  
23,372  
308,188  
596,543  
395,897  

(535,409)  
(14,252)  
-  
-  
(30,145)  
8,197  

618,198

176,439

336,264

461,654

502,817

564,095

(87,789)

-

-

(26,367)

7,495

4,114,948  

3,424,979  

3,701,030

(245,683)  
36,708  
3,484  
(157,916)  
-  
(14,864)  
(30,508)  

(66,087)  
138,762  
(17,525)  
(8,316)  
(7,455)  
(330,256)  
(15,881)  
35,690  

(679,847)  

(285,854)  
91,547  
6,758  
(24,491)  
2,581  
(34,009)  
3,444  

(15,249)  
48,533  
43,077  
(19,505)  
(8,792)  
(240,032)  
88,549  
190,277  

(153,166)  

(305,810)

34,247

5,463

(13,147)

-

(37,655)

(22,749)

(17,982)

(104,658)

29,278

(80,855)

(19,418)

(235,573)

88,414

130,537

(549,908)

F-7 

3,435,101  

3,271,813  

3,151,122

  
  
  
  
  
  
  
   
   
   
 
   
  
   
   
   
 
   
   
   
 
   
   
   
   
   
   
 
  
   
   
   
   
   
  
   
   
   
 
   
  
   
   
   
 
   
   
   
 
   
   
   
   
   
   
   
  
   
   
   
 
   
   
   
 
   
   
   
   
   
   
   
   
  
   
   
   
 
   
  
   
   
   
 
   
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Consolidated Statements of Cash Flows 
Years Ended December 31, 2010, 2009 and 2008 
Amounts in thousands of reais unless otherwise indicated 

Cash generated from operations 
      Interest paid 
      Income tax and social contribution paid 

Net cash generated from operating activities 

Cash flows from investing activities 
      Restricted cash 
      Purchases of property, plant and equipment 
      Purchases of intangible assets 
      Proceeds from sale of property, plant and equipment 

Net cash used in investing activities  

Cash flows from financing activities 
      Loans and financing 
             Proceeds from borrowings 
             Repayments of borrowings 
      Payment of interest on shareholders' equity 

Net cash provided by (used in) financing activities 

Increase in cash and cash equivalents  

      Cash and cash equivalents at beginning of year  
      Cash and cash equivalents at end of year 

5  
5  

      Increase in cash and cash equivalents 

The accompanying notes are an integral part of these financial statement. 

F-8 

Note  

2010  

2009  

2008

(continued)

(618,600)

(733,452)

2,083,049  

(189,820)

(87,383)

(1,814,166)

-

(2,091,369)

3,425,417  
(1,800,507)

(398,419)

1,226,491  

1,218,171  

771,008  
1,989,179  

1,218,171  

(555,573)  
(643,788)  

2,072,452  

(10,748)  
(9,347)  
(1,973,096)  
29,161  

(1,964,030)  

2,237,056  
(1,896,480)  
(303,722)  

36,854  

145,276  

625,732  
771,008  

145,276  

(516,887)

(530,372)

2,103,863

(94,345)

(18,385)

(1,527,528)

-

(1,640,258)

1,043,174

(629,529)

(708,858)

(295,213)

168,392)

457,340

625,732

168,392

  
  
                                                             
  
  
  
  
   
 
 
   
 
   
 
 
   
 
   
 
   
 
  
   
 
 
   
 
   
  
   
 
 
   
 
   
 
 
   
 
   
 
   
 
   
 
   
 
  
   
 
 
   
 
   
 
  
   
 
 
   
 
   
 
 
   
 
   
 
 
   
 
   
   
 
   
 
  
   
 
 
   
 
   
  
   
 
 
   
 
   
  
   
 
 
   
 
  
   
 
 
   
 
   
  
   
 
 
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

1   Operations 

Companhia de Saneamento Básico do Estado de São Paulo ("SABESP" or the "Company") is a mixed-capital company 
headquartered in São Paulo, controlled by the São Paulo State Government. The Company is engaged in the provision of basic 
and environmental sanitation services, supplies treated water on a wholesale basis and provides sewage treatment services to 
six other municipalities in the Greater São Paulo Metropolitan Area. 

In addition to providing basic sanitation services in the State of São Paulo, SABESP may perform these activities in other states 
and countries, and can operate in drainage, urban cleaning, solid waste handling and energy markets. The objective set in the 
new vision of SABESP is to be recognized as the company that ensured universal access to water and sewage services in its 
marketplace, focused on the customer, and in a sustainable and competitive manner, with excellence in environmental 
solutions. 

On December 31, 2010, the company operates water and sewage services in 364 of municipalities of the State of São Paulo, 
having temporarily discontinued operations in five of these municipalities, Itapira, Araçoiaba da Serra, Iperó, Cajobi and 
Tarumã, due to judicial orders under ongoing lawsuits. Most of these municipalities operations are based on 30-year 
concession agreements. As of December 31, 2010, 119 concessions had expired and are being negotiated. From 2011 to 2030, 
44 concessions will expire, and the remaining concessions operate on rollover basis. These concessions with indefinite terms 
and expired concessions under negotiation are amortized over the useful lives of the underlying assets. By December 31, 2010, 
201 concession program contracts were signed (2009 - 174 concession program contracts). In February 2011 the Company 
restarted the operation in the municipality of Tarumã by judicial order. 

Management believes that all concessions expired and not yet renewed will result in new contracts or contract extensions, 
disregarding the risk of discontinuity in the provision of municipal water supply and sewage services. As of December 31, 2010, 
the carrying amount of the underlying assets used in the 119 concessions of the municipalities under negotiation totaled 
R$ 5,465 million and the related revenue for the year then ended totaled R$ 2,591 million. 

The Company's operations are concentrated in the municipality of São Paulo, which accounted for 54.66% of the gross 
revenues in 2010. On June 23, 2010, the State of São Paulo, the Municipality of São Paulo, the Company and the regulatory 
agency “Agência Reguladora de Saneamento e Energia – ARSESP” signed an agreement to share the responsibility for water 
supply and sewage services to the Municipality of São Paulo based on a 30-year concession agreement. This agreement is 
extendable for another  30 years. This agreement sets forth SABESP as the exclusive service provider and designates ARSESP 
as regulator, establishing prices, controlling and monitoring services.  

Also, on June 23, 2010, the State of São Paulo, the city of São Paulo and SABESP signed the “Public service provision 
agreement of water supply and sewage services”, a 30-year concession agreement which is extendable for another 30 years. 
This agreement involves the following activities: 

(i)     protection of the sources of water in collaboration with other agencies of the State and the City; 
(ii)   capture, transport and treat of water; 
(iii)  collect, transport, treatment and final dispose of  sanitary sewage; and 
(iv)  adoption of other actions of basic and environmental sanitation. 

F-9 

  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

In the municipality of Santos, in the Baixada Santista region, which has a significant population, the Company operates under 
an authorization by public deed, a situation similar to other municipalities in that region and in the Ribeira valley, where the 
Company started to operate after the merger of the companies that formed it. 

On January 5, 2007, Law 11,445 was enacted, establishing the basic sanitation regulatory framework, providing for the 
nationwide guidelines and basic principles for the provision of such services, such as social control, transparency, the 
integration authority of sanitation infrastructure, water resources management, and the articulation between industry policies 
and public policies for urban and regional development, housing, suppression of poverty, promotion of health and 
environmental protection, and other related issues.  

The Company's shares have been listed in the Novo Mercado (New Market) segment of BM&FBOVESPA (the São Paulo Stock 
Exchange) since April 2002 and on the New York Stock Exchange (NYSE) as American Depositary Receipts (“ADRs”) since 
May 2002. 

These financial statements were approved by the Board of Directors on June 2, 2011. 

2             Summary of Significant Accounting Practices 

2.1          Basis of preparation 

The consolidated financial statements of the Company have been prepared in accordance with International Financial 
Reporting Standards ("IFRS"), issued by the International Accounting Standards Board ("IASB"), IFRS Interpretation 
Committee. These policies have been consistently applied to all the years presented. 

The financial statements have been prepared under the historical cost except for certain financial instruments which were 
measured at fair value according to IFRS. 

The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It 
also requires management to exercise its judgment in the process of applying the Company's accounting policies. The areas 
involving a higher degree to judgment or complexity, or areas where assumptions and estimates are significant to the 
consolidated financial statements are described in Note 4. 

2.2         Proportional consolidation 

The consolidated financial statements include the financial statements of the Company and its investees: Sesamm – Serviços 
de Saneamento de Mogi Mirim S/A, Águas de Andradina S.A., Saneaqua Mairinque S.A. e Aquapolo Ambiental S.A., which 
were proportionally consolidated according to the equity interest over its investees.  

The Company has no majority shares of its investees, but according to investees’  By-Laws approvals of any subject by 
shareholders in general meeting, except for the approval of any subject mentioned in the investees’  By-Laws, which relates to 
decisions that affect financial and operational policies, for example, approval of the business plan, will be made by a majority 
vote, and SABESP has power of veto. 

For the purposes of calculating the Company's proportional share of revenues, expenses, assets and liabilities of its investees, 
unrealized gains or transactions between the Company and its investees were eliminated in proportion to the Company's 
interest; unrealized losses are also eliminated, unless the transaction presents evidence of impairment of the transferred asset. 
The accounting policies applied by the investees are consistent with the accounting policies adopted by the Company. 

F-10 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Sesamm 

On August 15, 2008, the Company, together with the companies OHL Médio Ambiente, Inima S.A.U. Unipersonal ("Inima"), 
Técnicas y Gestión Medioambiental S.A.U. ("TGM") and Estudos Técnicos e Projetos ETEP Ltda. ("ETEP") incorporated the 
company Serviços de Saneamento de Mogi Mirim S.A. - SESAMM ("SESAMM"), for a period of 30 years from the date the 
concession agreement with the municipality of Mogi Mirim for the purpose of providing complementary services to the sewage 
diversion system and implementing and operating sewage treatment system in the municipality of Mogi Mirim, including the 
disposal of solid waste. 

SESAMM's capital as of December 31, 2010 and 2009, totaled R$ 10,669, and was represented by 10,669,549 registered shares 
without a par value. SABESP holds 36% of its equity interest and Inima holds another 36% of its equity interest. The Company 
concluded that both, SABESP and Inima, have joint control over SESAMM. Accordingly, SABESP records their interest over 
SESAMM applying the proportional consolidation method, equivalent to the 36% of SESAMM's assets and liabilities, revenues 
and expenses. 

As of December31, 2010, SESAMM´s operations had not been started yet. 

Águas de Andradina 

On  September  15,  2010,  the  Company,  together  with  the  company  Companhia  de  Águas  do  Brasil  –  Cab  Ambiental 
incorporated  the  company  Águas  de  Andradina  S.A.,  with  indefinite  term,  for  the  purpose  of  providing  water  supply  and 
sewage services to the municipality of Andradina. 

On December 31, 2010, the capital of Águas de Andradina totaled R$ 122, and was represented by 121,997 registered shares 
without a par value. SABESP holds 30%of its equity interest. 

The operations started in October 2010.  

Saneaqua Mairinque 

On June 14, 2010, the Company, together with the company Foz do Brasil S.A. incorporated the company Saneaqua Mairinque 
S.A.,  with  indefinite  term,  for  the  purpose  of  exploring  the  public  service  of  water  supply  and  sewage  services  to  the 
municipality of Mairinque. 

On  December  31,  2010,  the  capital  of  Saneaqua  Mairinque  totaled  R$  2,000,  and  was  represented  by  2,000,000  registered 
shares without a par value. SABESP holds 30%of its equity interest. 

The operations initiated in October 2010.  

F-11 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Aquapolo 

On  October  8,  2009,  the  Company,  together  with  the  company  Foz  do  Brasil  S.A.  incorporated  the  company  Aquapolo 
Ambiental S.A., for the purpose of producing, providing and commercializing of reused water. 

On  December  31,  2010,  the  capital  of  Aquapolo  totaled  R$  12,041,  and  was  represented  by  12,041,000  registered  shares 
without a par value. SABESP holds 49%of its equity interest. 

The operations are expected to initiate in April 2012.  

Águas de Castilho 

On October 29, 2010, the Company, together with the company Águas do Brasil – Cab Ambiental, incorporated the company 
Águas de Castilho, for the purpose of providing water supply and sewage services to the municipality of Castilho. 

The capital of Águas de Castilho totaled R$ 65, and was represented by 65,600 registered shares without a par value. SABESP 
holds 30%of its equity interest. 

SABESP paid-up its 30% share of capital in January 2011. 

The operations initiated in January 2011. 

Attend Ambiental 

On August 23, 2010 the Company Estre Ambiental S.A, incorporated the company Attend Ambiental S.A, for constructing and 
operating a pretreatment of non domestic effluent station, mud transportation and related services in the city of São Paulo as 
well as implement similar structures in other areasin Brazil and abroad. 

The capital totaled R$ 2,000, and it is represented by 2,000,000 registered shares without a par value. SABESP holds 45%of 
its equity interest. 

SABESP paid-up its 45% share of capital in December 2010. 

As of December31, 2010, the operations had not been started yet. 

See below a summary of financial information of the joint-controlled entities: 

F-12 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
2010 

Águas de 
Andradina 
30% 
178 
106 
119 
301 
(136) 

247 
(451) 
- 
(204) 

Saneaqua 
Mairinque 
30% 
851 
10 
177 
9 
675 

447 
(384) 
12 
75 

Aguapolo 
Ambiental 
49% 
13,798 
46,094 
1,331 
53,909 
4,652 

- 
(1.023) 
- 
(1.023) 

Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Current assets 
Non-current assets 
Current liabilities 
Non-current liabilities 
Stockholders’ equity 

Operating revenue 
Operating expenses 
Financial income, net 
Profit (loss) for the year 

Current assets 
Non-current assets 
Current liabilities 
Non-current liabilities 
Stockholders’ equity 

Operating revenue 
Operating expenses 
Financial income, net 
Profit (loss) for the year 

2.3         Segment reporting 

Sesamm 
36% 
420 
 5,353  
2,702 
- 
3,071 

- 
(638) 
95 
(543) 

2009 

Sesamm 

36% 
1,666 
2,155 
207 
- 
3,614 

- 
(506) 
288 
(218) 

Operating segments are reported in a manner consistent with the internal reporting provided to the chief operating decision-
maker. The chief operating decision-maker, is responsible for allocating resources and assessing performance of the operating 
segments, has been identified as the Executive Board that makes strategic decisions. 

2.4         Translation into foreign currency 

(a)         Functional and reporting currency 

Items included in the financial statements are measured using the currency of the primary economic environment in which the 
company operates ("the functional currency"). The financial statements are presented in Brazilian reais  (R$ or reais), which is 
the Company's functional and presentation currency. All financial information presented has been presented in reais, except 
where indicated. 

F-13 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(b)         Foreign currency translation 

Foreign currency-denominated transactions are translated into Brazilian reais  using the exchange rates prevailing at the 
transaction dates. Balance sheet accounts are translated at the exchange rate  prevailing at balance sheet date. Exchange gains 
and losses arising on the settlement of these transactions and the translation of foreign currency-denominated cash assets and 
liabilities are recognized in Foreign exchange result in the statement of income.  

2.5         Financial Instruments 

2.5.1      Fair Value 

Fair values of investments quoted in a public market are based on current purchase prices. For financial assets without an 
active market or public quotation, the Company determines fair value using valuation techniques, which consist of the use of 
recent transactions with third parties, the reference to other substantially similar instruments, the analysis of discounted cash 
flows and option pricing models, which make the maximum use of market inputs and relies as little as possible on entity-
specific inputs. 

2.5.2     Classification and measurement 

The Company classifies its financial assets according to the following categories: measured at fair value through profit or loss, 
loans and receivables, held-to-maturity and available for sale. The classification depends on the purpose for which the financial 
assets were acquired. Management determines the classification of the financial assets at inception. 

(a)          Financial assets calculated at fair value through profit or loss 

These are financial assets held for active and frequent trading. These assets are classified as current assets. Gains or losses 
arising from changes in the fair value of financial assets measured at fair value through profit or loss are presented in the 
statement of income in 'Financial income' or 'Financial expenses' in the period they occur, unless the instrument has been 
contracted in connection to another transaction. In this case, changes are recognized in the same line item of income affected 
by this transaction. As of December 31, 2010, the Company did not have financial assets. 

(b)          Loans and receivables 

These comprise receivables which are non-derivative financial assets with fixed or determinable payments, not quoted in an 
active market. Loans and receivables are included in current assets or liabilities, except for those with maturity of more than 12 
months after the balance sheet date (these are classified as noncurrent assets or liabilities). The Company's loans and 
receivables include cash and cash equivalent trade accounts receivable, other accounts receivable and loans. Loans and 
receivables are recorded at amortized cost, under the effective interest rate method. 

(c)          Held-to-maturity 

Held-to-maturity investments are non-derivative financial assets with fixed or determinable payments and fixed maturities 
that the Company’s management has the positive intention and ability to hold to maturity, other than:  

(a) those that the Company upon initial recognition designates as at fair value through profit or loss;  
(b) those that the Company designates as available for sale; and  
(c) those that meet the definition of loans and receivables.  

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

These are initially recognised at fair value including direct and incremental transaction costs and measured subsequently at 
amortized cost, using the effective interest method.  

Interest on held-to-maturity investments is included in the consolidated income statement and reported as ‘Interest income’. 
In the case of an impairment, the impairment loss is reported as a deduction from the carrying value of the investment and 
recognized in the consolidated income statement as ‘Net gains/(losses) on investment securities’.  

On December 31, 2010 and 2009 the Company had no financial assets classified in this category.”  

(d)          Available for sale 

These financial assets available for sale are non-derivative instruments that are either designated in this category or not 
classified in any other categories. They are included in noncurrent assets, unless the management intends to sell these assets 
within 12 months of the balance sheet date. These assets are stated at fair value, including interest, calculated by the effective 
interest method, which are recognized in the income statement as financial income. The changes in the fair value are 
recognized in other comprehensive income in equity and reclassified from equity to profit and loss when sold or when there is 
objective evidence that the asset is impaired. On December 31, 2010 and 2009 the Company had no financial assets classified 
in this category. 

2.6         Cash and cash equivalents 

Cash and cash equivalents includes cash in hand, deposits held at call with banks, other short-term highly liquid investments 
with original maturities of three month or less.  

2.7         Revenue from sales and services 

Revenue from water supply and sewage collection are recognized as the water is consumed and services are provided. 
Revenues, including the revenues unbilled, are recognized at the fair value of the consideration received or receivable for the 
sale of those services in the ordinary course of the Company’s activities. Revenue is shown net of value-added tax, returns, 
rebates and discounts. Revenues from unbilled represent incurred revenues in which the services were provided, but not yet 
billed until the end of the each period. Water supply and sewage services are recorded as trade accounts receivable based on 
monthly estimates of the completed services. 

The Company recognizes revenue when: i) products are delivered or services are rendered; ii) the amount of revenue can be 
reliably measured, iii) it is probable that future economic benefits will flow to the Company and iv) it is probable that the 
amounts will be collected. The amount of revenue is not considered to be reliably measurable until all conditions relating to the 
sale have been satisfied. Amounts in dispute are recognized as revenue when collected. 

Construction revenue 

Revenue from concession construction contracts is recognized in accordance with IAS 11 Construction Contracts using the 
percentage-of-completion method, provided that the applicable conditions for application are fulfilled. The percentage of 
completion is calculated from the ratio of the actual costs incurred on the balance sheet date to the planned total costs (cost-to-
cost method). Revenue from cost plus contracts is recognized by reference to the construction costs incurred during the period 
plus a fee earned. The fee represents the additional margin related to the work performed by the Company in relation to such 
construction contracts and it is added to the construction costs incurred and the total is recognized as construction revenue. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

2.8         Customer accounts receivable and allowance for doubtful accounts 

Customer accounts receivable are amounts due from customers for services performed in the ordinary course of business. If 
collection is expected in one year or less, they are classified as current assets. If not, they are presented as noncurrent assets.  

In practice, the customers' accounts receivables are recognized at fair value (the amount billed) adjusted by the provision for 
impairment (when necessary). 

The Company records an allowance for doubtful accounts for receivable balances in an amount that is deemed by management 
to be sufficient to cover probable losses in accounts receivable, based on the analysis of the history of receipts and it does not 
expect to incur in additional significant losses, mainly in relation to the municipalities.  

2.9         Inventories 

Inventories of supplies for consumption and maintenance of the water and sewage systems are stated at the lower of average 
cost of acquisition or realizable value, and are classified in current assets.  

2.10       Property, plant and equipment 

Property, plant and equipment comprise mainly administrative facilities. Those assets are stated at historical cost less 
depreciation, net of impairment charge, when necessary, and include interest capitalized incurred during the construction 
period where applicable, for the qualifying assets.  

Subsequent costs included in the asset's carrying amount or recognized as a separate asset, as appropriate, only when it is 
probable that the future economic benefit associated with the item will flow to the Company and the cost of the item can be 
measured reliably. All other repairs and maintenance are charged to the income statement during the financial period in which 
they were incurred. 

Land is not depreciated. Depreciation is calculated using the straight-line method to allocate their cost and is described in Note 
11(a). 

Gain and losses on disposals are determined by comparing the proceeds with the carrying amount and are recognized within 
other operating income (expenses) in the income statements. 

2.11        Intangible assets 

Intangibles are stated at cost combined with the following aspects:  

.     Valued at acquisition cost and/or construction of the underlying assets, including interest capitalized during the 

construction period, where applicable, for the qualifying assets. Qualifying assets are assets that, necessarily, take a 
substantial period to get ready for its intended use or sale. The Company considers that substantial period means a period 
greater than 12 months. This period was established by considering the completion period of the majority of its 
constructions which is greater than 12 months. The historical cost was adjusted to fair value in 1991 and 1992, in 
accordance with former Brazilian GAAP. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The amortization is calculated when the intangible assets are available for use in the necessary condition established by the 
Company. 

The amortization reflects the period over the expected future economic benefits generated by the intangible asset and can be 
the period of the contract, depending on the contract. The utilization of the assets is related to its useful life of the assets 
constructed by the Company and the amortization of the intangible assets is considered in the calculation of the tariff. 

The amortization of the intangible assets finish when the underlying asset is totally consumed or its is alienated, not being 
considered in the calculation of the tariff any longer, what occurs first. 

Infrastructure to which the operator is given access by the grantor of the concession or donation received from third parties is 
not recognized in the consolidated balance sheet, since such donations are controlled by the municipalities. 

(a)         Concession arrangements 

The infrastructure used by SABESP subject to service concession arrangements is considered to be controlled by the 
concession grantor when: 

(i)        The grantor controls or regulates what services the operator must provide with the infrastructure, to whom it most 

provide them, and at what price; and 

(ii)       The grantor controls the infrastructure, i.e., retains the right to take back the infrastructure at the end of the concession. 

SABESP's rights over infrastructure operated under concession arrangements is accounted for as an intangible asset as 
SABESP has the right to charge for use of the infrastructure assets, and users (consumers) have the primary responsibility to 
pay SABESP for the services. 

The fair value of construction and other work on the infrastructure represents the cost of the intangible asset and is recognized 
as revenue when the infrastructure is built, provided that this work is expected to generate future economic benefits.  

The great majority of the Company's contracts for service concession arrangements entered with each municipality (grantor) is 
under service concession agreements in which the Company has the legal right to receive, at the end of the contract, a 
compensation equivalent to the unamortized asset balance of the underlying physical assets. The concession intangible assets 
are, therefore, amortized considering the useful lives of the underlying physical assets. Thus, at the end of the contract, the 
remaining value of the intangible will be equal to the residual value of the related physical assets.  

Concession intangible assets under Concession contracts and Program contracts, when there is no right to receive the residual 
value of the assets at the end of the contract, are amortized on a straight-line basis over the period of the contract, or the useful 
life of the underlying asset. 

(b)         Amortization rates 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

                The annual amortization rates based on the related underlying assets as of December 31, 2010 are as follows: 

Description of the underlying asset 
Water and sewage infrastructure 
Equipment 
Transportation equipment 
Furniture and fixtures 
Others 

(c)         Software licenses 

2%
5%
10%
6.7%
5%

Software licensing of computer programs and business management systems acquired are capitalized and amortized over the 
period of the license and the expenses associated with maintaining these are recognized as expenses when incurred. 

2.12       Impairment 

Property and equipment, intangibles and other noncurrent assets, are reviewed for impairment whenever events or changes in 
circumstances indicate that the carrying amount may not be recoverable.  

The recoverable amount is the higher of value in use and fair value less cost to sell. An impairment loss is recognized for the 
amount by which the asset's carrying amount exceeds its recoverable amount. For the purposes of measuring impairment, 
assets are grouped in the lowest level for which there are separately identifiable cash flows (CGU - Cash Generating Units). 

The methodology applied was the discounted cash flow, considering a five-year period operating cash flow, annualized as from 
2016 until the maturity date of each contract. The operating cash flow is adjusted by a 4.5% inflation rate during the 
amortization period of the asset and discounted by the weighted average cost of capital (WACC). 

Management believes there is no indication that the amounts of property and equipment, intangibles and other noncurrent 
assets will not be recovered by future operations. 

2.13       Accounts payable to suppliers and contractors 

Accounts payable to contractors and suppliers are obligations to pay for goods or services purchased from suppliers in the 
ordinary course of business and are classified as current liabilities if the payment is due in the period up to one year. 
Otherwise, the accounts payable are presented as non-current liabilities and are measured at fair value. 

2.14       Loans and financing 

Borrowings are initially recognized at fair value, upon receipt of funds, net of transaction costs. Subsequently, borrowings are 
stated at amortized cost, and interest is accrued based on the effective interest method, as presented in Note 12. Loans and 
financing are classified as current liabilities unless the Company has an unconditional right to defer settlement of the liability 
for at least 12 months after the balance sheet date. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Nonconvertible debentures are recognized in a similar manner to borrowings. 

2.15       Payroll and related charges 

Salaries include an accrual for vacations and the 13th salary and additional payments negotiated in collective labor agreements 
plus related charges and are recorded on the accruals basis. 

2.16       Profit sharing 

The Company's profit sharing plan for its employees is based on general targets of the Company as a whole, and based on the 
performance of each business units. The accrual for profit sharing is recorded on the accruals basis as operating expenses. 

2.17       Provisions, judicial deposits and escrow deposits 

Provisions for legal claims are recognized when: i) the Company has a present legal or constructive obligation as a result of 
past events; ii) it is probable that an outflow of resources will be required to settle the obligation; and iii) the amount can be 
reliably estimated. Where there are a number of similar obligations, the likelihood that an outflow will be required in 
settlement is determined by considering the class of obligations as a whole. A provision is recognized even if the likelihood of 
an outflow with respect to any one item included in the same class of obligations may be small. 

Provisions are measured at the present value of the expenditures expected to be required to settle the obligation using a pre-
tax rate that reflects current market assessments of the time value of money and the risks specific to the obligation. The 
increase in the provision due to passage of time is recognized as interest expense. 

For financial statement presentation purposes, the provisions are stated net of the related escrow deposits based on the legal 
right to offset. The bases and the nature of the reserves for civil, tax, labor and environmental risks are described in Note 15. 

Escrow deposits not linked to related liabilities are recorded in noncurrent assets and restated for inflation. 

2.18       Environmental costs 

Costs related to ongoing environmental programs are expensed as incurred. Ongoing programs are designed to minimize the 
environmental impact of the operations and to manage the environmental risks inherent to the Company's activities.  

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

2.19       Income taxes 

Income taxes in Brazil comprise Federal income tax (25%) and social contribution (9%), for which the composite statutory rate 
is 34%. 

The tax expense for the period comprises current and deferred tax. 

(a)         Current tax 

The current income tax and social contribution expense are calculated on the basis of the laws enacted or substantively enacted 
at the balance sheet date, pursuant to Brazilian tax regulations. Taxable income differs from net income (profit presented in 
the statement of income), because it excludes income and expenses taxable or deductible in other years, and excludes items not 
permanently taxable or not deductible. Management periodically evaluates and measures the positions taken in the income tax 
return with respect to situations in which applicable tax regulations are subject to interpretation. It establishes provisions 
where appropriate on the basis of amounts expected to be paid to the tax authorities. 

(b)         Deferred tax 

Deferred income tax is recognized, using the liability method, on temporary differences arising between the tax basis of assets 
and liabilities and their carrying amounts in the consolidated financial statements, according to IAS 12. However, the deferred 
income tax is not accounted for if it arises from initial recognition of an asset or liability in a transaction other than a business 
combination that at the time of the transaction affects neither accounting nor taxable profit nor loss. Deferred income tax is 
determined using tax rates (and laws) that have been enacted or substantially enacted by the balance sheet date and are 
expected to apply when the related deferred income tax asset is realized or the deferred income tax liability is settled. 

Deferred income tax assets are recognized only to the extent that it is probable that future taxable profit will be available 
against which the temporary differences can be utilized. Deferred income tax assets and liabilities are offset when there is a 
legally enforceable right to offset current tax assets against current tax liabilities and when the deferred income taxes assets 
and liabilities relate to income taxes levied by the same taxation authority on either the taxable entity or different taxable 
entities where there is an intention to settle the balances on a net basis. 

2.20      Accrued taxes on revenues 

Accrued taxes on revenues are recognized on accrual basis for PASEP and Cofins. These taxes are calculated on differences 
from tax basis of billing to government entities, which are taxable when the invoices are settled. As these taxes are non-
cumulative, they are presented net of tax credits, as deductions from gross revenues. Debts and credits arising from other 
operating income and expenses, respectively, are presented as deductions from the respective operating income or expense. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

2.21       Pension obligations 

(a)         Defined benefit 

Liabilities from defined benefit pension plan obligations correspond to the present value of the defined benefit obligation at 
balance sheet date, less the fair value of the plan's assets, and adjusted by unrecognized actuarial gains or losses. The defined 
benefit obligation is calculated on an annual basis by independent actuaries, using the projected unit credit method. The 
estimated future cash outflows is discounted to its present value, using the interest rates of Government bonds with maturities 
that approximate the maturity of the related liability. 

Actuarial gains and losses arising from experience adjustments and changes in actuarial assumptions are in excess of the 
greater of 10% of the fair value of plan assets or 10% of the present value of the defined benefit obligation are charged or 
credited to income over the employees' expected average remaining working lives. The expenses related to pension plan are 
recognized in profit and loss of the year as cost of sales and services, selling expenses or administrative expenses, according to 
employee’s allocation. 

In a event where a curtailment relates to only some of the employees covered by a plan, or where only part of an obligation is 
settled, the gain or loss includes a proportionate share of the previously unrecognized past service cost and actuarial gains and 
losses. The proportionate share is determined on the basis of the present value of the obligations before and after the 
curtailment or settlement.  

(b)         Defined contribution 

The Company participates in a defined contribution plan (Sabesprev Mais), controlled by a closed private pension entity – 
Fundação SABESP de Seguridade Social (Sabesprev) that provide postretirement benefits to the Company´s employees.  

A defined contribution plan is a pension plan under which the Company makes fixed contribution to a closed private pension 
entity. The Company has no further legal or contractual obligation to provide further contributions in case the pension fund is 
not sufficient to pay the benefits to all employees related to the service cost of current or prior period. 

With respect to the defined contribution plan, the Company contributes to Sabesprev on mandatory, contractual or voluntary 
basis. The regular contributions are recognized in the income statement of the period. 

2.22      Financial income and expenses 

Financial income is primarily comprised of interest, inflation adjustments and exchange variations on short term investments 
and client negotiation. Financial expenses are primarily comprised of interest, inflation adjustments and exchange variations 
on loans and financing and provisions. These financial income and expenses are calculated using the effective interest rate 
method.  

2.23      Leases 

Leases of property, plant and equipment where the lessor retains substantially all risks and rewards incidental to ownership 
are classified as finance leases. Such leases are accounted for as a financed purchase, and a property, plant and equipment and 
a financing liability are recognized at their inception.  

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

2.24      Other current and noncurrent assets and liabilities  

Other assets are stated at cost of acquisition, net of any impairment loss, when applicable. The amounts recognized as other 
liabilities are stated at known or estimated amounts, including, where applicable, related charges and monetary variations. 

2.25      Dividends and Interest on Shareholders' Equity 

The Company uses the tax benefits of distributing dividends as interest on shareholders' equity, as permitted by Brazilian Law. 
This distribution of dividend is accounted for in accordance with Brazilian Law 9249/95 for tax deductibility purposes, limited 
to the daily pro rata fluctuation of the Long-term Interest Rate (TJLP). The benefit attributed to the shareholders is recognized 
in the current liability against Equity, based on the articles of association. Dividends and interest on shareholders´ equity over 
the minimum established in the articles of association are recognized when approved by the shareholders in the general 
meeting. The tax effects of the interest on shareholders’ equity are recognized in the income statement of the year. 

2.26      Present value adjustment 

Current and noncurrent assets and liabilities are adjusted to present value based on discount rate at current market rate as of 
the transaction date, when the effects are relevant. 

2.27       New and amended standards adopted by the Company 

                In 2009, the Company has early adopted IAS 24 - Related Party Disclosures (as amended in November 2009). The disclosure 

requirements for entities that are controlled, jointly-controlled or significantly influenced by a government (referred to as 
government-related entities) are simplified and so detailed disclosures of all transactions with entities  controlled by the São 
Paulo State Government are not presented in these financial statements. 

2.28      Standards, amendments and interpretations to existing standards that are not yet effective 

(a)         Standards, amendments and interpretations to existing standards that are not yet effective and have 
not been early adopted by the Company 

The following standards and amendments to existing standards have been published and are mandatory for the Company's 
accounting periods beginning on or after January 1, 2010 or later periods but the Company has not early adopted them. 

.     IFRS 3 (revised), "Business combinations", and consequential amendments to IAS 27, "Consolidated and separate financial 
statements", IAS 28, "Investments in associates", and IAS 31, "Interests in joint ventures", are effective prospectively to 
business combinations for which the acquisition date is on or after the beginning of the first annual reporting period 
beginning on or after July 1, 2009. 

      The revised standard continues to apply the acquisition method to business combinations but with some significant 
changes compared with IFRS 3. For example, all payments to purchase a business are recorded at fair value at the 
acquisition date, with contingent payments classified as debt subsequently re-measured through the statement of 
comprehensive income. There is a choice on an acquisition-by-acquisition basis to measure the non-controlling interest in 
the acquiree either at fair value or at the non-controlling interest's proportionate share of the acquiree's net assets. All 
acquisition-related costs are expensed. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

 The Company will apply IFRS 3 (revised) prospectively to all business combinations from January 1, 2010. 

.     IAS 27 (revised) requires the effects of all transactions with non-controlling interests to be recorded in equity if there is no 
change in control and these transactions will no longer result in goodwill or gains and losses. The standard also specifies 
the accounting when control is lost. Any remaining interest in the entity is re-measured to fair value, and a gain or loss is 
recognised in profit or loss. IAS 27 (revised) has had no impact on the current period, as none of the non-controlling 
interests have a deficit balance; there have been no transactions whereby an interest in an entity is retained after the loss of 
control of that entity, and there have been no transactions with non-controlling interests. This standard had no impact on 
the Company´s financial statements. 

(b)         New and amended standards, and interpretations mandatory for the first time for the financial year 
beginning January 1, 2010 but not currently relevant to the group (although they may affect the 
accounting for future transactions and events): 

The following standards and amendments to existing standards have been published and are mandatory for the group's 
accounting periods beginning on or after January 1, 2010 or later periods, but the group has not early adopted them. 

.    IFRIC 17, "Distribution of non-cash assets to owners" (effective on or after July 1, 2009). The interpretation was published 
in November 2008. This interpretation provides guidance on accounting for arrangements whereby an entity distributes 
non-cash assets to shareholders either as a distribution of reserves or as dividends. IFRS 5 has also been amended to require 
that assets are classified as held for distribution only when they are available for distribution in their present condition and 
the distribution in highly probable. 

.    IFRIC 18, "Transfers of assets from customers", effective for transfer of assets received on or after July 1, 2009. This 

interpretation clarifies the requirements of IFRSs for agreements in which an entity receives from a customer an item of 
property, plant and equipment that the entity must then use either to connect the customer to a network or to provide the 
customer with ongoing access to a supply of goods or services (such as a supply of electricity, gas or water). In some cases, 
the entity receives cash from a customer that must be used only to acquire or construct the item of property, plant, and 
equipment in order to connect the customer to a network or provide the customer with ongoing access to a supply of goods 
or services (or to do both). 

.    IFRIC 9, "Reassessment of embedded derivatives and IAS 39, Financial instruments: Recognition and measurement", 

effective July, 1 2009. This amendment to IFRIC 9 requires an entity to assess whether an embedded derivative should be 
separated from a host contract when the entity reclassifies a hybrid financial asset out of the "fair value through profit or 
loss" category. This assessment is to be made based on circumstances that existed on the later of the date the entity first 
became a party to the contract and the date of any contract amendments that significantly change the cash flows of the 
contract. If the entity is unable to make this assessment, the hybrid instrument must remains classified as at fair value 
through profit or loss in its entirety. 

.    IFRIC 16, "Hedges of a net investment in a foreign operation" effective July 1, 2009. This amendment states that, in a hedge 
of a net investment in a foreign operation, qualifying hedging instruments may be held by any entity or entities within the 
group, including the foreign operation itself, as long as the designation, documentation and effectiveness requirements of 
IAS 39 that relate to a net investment hedge are satisfied. In particular, the group should clearly document its hedging 
strategy because of the possibility of different designations at different levels of the group. IAS 38 (amendment), "Intangible 
assets", effective January 1, 2010. The amendment clarifies guidance in measuring the fair value of an intangible asset 
acquired in a business combination and permits the grouping of intangible assets as a single asset if each asset has similar 
useful economic lives. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

.    IAS 1 (amendment), "Presentation of financial statements". The amendment clarifies that the potential settlement of a 

liability by the issue of equity is not relevant to its classification as current or non current. By amending the definition of 
current liability, the amendment permits a liability to be classified as non-current (provided that the entity has an 
unconditional right to defer settlement by transfer of cash or other assets for at least 12 months after the accounting period) 
notwithstanding the fact that the entity could be required by the counterparty to settle in shares at any time. 

.    IAS 36 (amendment), "Impairment of assets", effective January 1, 2010. The amendment clarifies that the largest cash-
generating unit (or group of units) to which goodwill should be allocated for the purposes of impairment testing is an 
operating segment, as defined by paragraph 5 of IFRS 8, "Operating segments" (that is, before the aggregation of segments 
with similar economic characteristics). 

.    IFRS 2 (amendments), "Group cash-settled share-based payment transactions", effective form January 1, 2010. In addition 

to incorporating IFRIC 8, "Scope of IFRS 2", and IFRIC 11, "IFRS 2 - Group and treasury share transactions", the 
amendments expand on the guidance in IFRIC 11 to address the classification of group arrangements that were not covered 
by that interpretation. 

.    IFRS 5 (amendment), "Non-current assets held for sale and discontinued operations". The amendment clarificaties that 

IFRS 5 specifies the disclosures required in respect of non-current assets (or disposal groups) classified as held for sale or 
discontinued operations. It also clarifies that the general requirement of IAS 1 still apply, in particular paragraph 15 (to 
achieve a fair presentation) and paragraph 125 (sources of estimation uncertainty) of IAS 1. 

(c)         New standards, amendments and interpretations issued but not effective for the financial 
year beginning January 1, 2010 and not early adopted. 

             The group's and parent entity's assessment of the impact of these new standards and interpretations is set out below. 

.    IFRS 9,"Financial instruments", issued in November 2009. This standard is the first step in the process to replace IAS 39, 

"Financial instruments: recognition and measurement". IFRS 9 introduces new requirements for classifying and measuring 
financial assets and is likely to affect the group's accounting for its financial assets. The standard is not applicable until 
January 1, 2013 but is available for early adoption. However, the standard has not yet been endorsed by the EU. The group 
has not evaluated the impacts of  IFRS9 yet. 

     "Classification of rights issues" (amendment to IAS 32), issued in October 2009. The amendment applies to annual periods 

beginning on or after February 1, 2010. Earlier application is permitted. The amendment addresses the accounting for rights 
issues that are denominated in a currency other than the functional currency of the issuer. Provided certain conditions are 
met, such rights issues are now classified as equity regardless of the currency in which the exercise price is denominated. 
Previously, these issues had to be accounted for as derivative liabilities. The amendment applies retrospectively in 
accordance with IAS 8 "Accounting policies, changes in accounting estimates and errors". The group will apply the amended 
standard from January 1, 2011. 

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Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

.    IFRIC 19, "Extinguishing financial liabilities with equity instruments", effective July 1, 2010. The interpretation clarifies the 

accounting by an entity when the terms of a financial liability are renegotiated and result in the entity issuing equity 
instruments to a creditor of the entity to extinguish all or part of the financial liability (debt for equity swap). It requires a 
gain or loss to be recognised in profit or loss, which is measured as the difference between the carrying amount of the 
financial liability and the fair value of the equity instruments issued. If the fair value of the equity instruments issued cannot 
be reliably measured, the equity instruments should be measured to reflect the fair value of the financial liability 
extinguished. The group will apply the interpretation from January 1, 2011, subject to endorsement by the EU. It is not 
expected to have any impact on the group or the parent entity's financial statements. 

.    "Prepayments of a minimum funding requirement" (amendments to IFRIC 14). The amendments correct an unintended 

consequence of IFRIC 14, "IAS 19 - The limit on a defined benefit asset, minimum funding requirements and their 
interaction". Without the amendments, entities are not permitted to recognise as an asset some voluntary prepayments for 
minimum funding contributions. This was not intended when IFRIC 14 was issued, and the amendments correct this. The 
amendments are effective for annual periods beginning January 1, 2011. Earlier application is permitted. The amendments 
should be applied retrospectively to the earliest comparative period presented. The group will apply these amendments for 
the financial reporting period commencing on January 1, 2011. 

3             Financial Risk Management 

3.1          Financial risk factors 

The Company's activities expose it to a variety of financial risks: market risk (including foreign currency risk and interest rate 
risk), credit risk and liquidity risk.  

The Company has not utilized derivative instruments, although it may enter in forward exchange transactions and financing 
funding transactions in Brazilian reais  to mitigate the foreign currency exposure.  

(a)         Market risk 

Foreign currency risk 

This risk arises from the possibility that the Company may incur losses due to exchange rate fluctuations, which would 
increase the liability balances of foreign currency-denominated loans and financing obtained in the market and the related 
financial expenses. The Company does not have hedge or swap contracts to hedge against this risk. The Company monitors the 
financial debts to reduce the exposure to exchange rate variation taking advantage of opportunities to exchange expensive 
debts to cheaper debts by reducing financing costs through early payment of its debts. 

A significant portion of the Company's loans and financing was denominated in U.S. dollars and yens, totaling R$ 2,244,635 as 
of December 31, 2010 (R$ 1,732,335 as of December 31, 2009. The Company's exposure to currency risks are summarized as 
follows: 

F-25 

  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

December 31, 2010  

December 31, 2009

Foreign currency  

R$   Foreign currency  

R$

Loans and financing - US$ 
Loans and financing - Yen 

1,084,898  
21,316,000  

1,807,657  
436,978  

764,647  
21,316,000  

1,331,403
400,932

As of December 31, 2010, if the Brazilian real had weakened or strengthened by 10% against the US dollar and Yen with all 
other variables held constant, post-tax profit for the year would have been R$ 148,146 (2009 - R$ 114,334) lower or higher, 
mainly as a result of foreign exchange losses or gains on the translation of foreign currency denominated loans.  

Projection of valuation / devaluation of Real by 10% 
       Loans and financing 
       Variation Dolar/ Yen 
       Valuation or devaluation of Real 
       Income taxes rate 
       Income taxes 
       Valuation or devaluation net of taxes 

Interest rate risk 

December 
31, 
2010 

   December 
31, 
2009 

2,244,635 
10% 
224,464 
34% 
76,318 
148,146 

1,732,335 
10% 
173,234 
34% 
58,899 
114,334 

This risk arises from the possibility that the Company could incur losses due to fluctuations in interest rates, increasing the 
financial expenses related to loans and financing. 

The Company has not entered into any derivative contracts to hedge against this risk; however, it continually monitors market 
interest rates, in order to evaluate the possible need to replace its debt.   

The table below provides the Company's loans and financing denominated in reais  subject to variable interest rate: 

F-26 

  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
   
 
  
  
   
   
   
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(i) 
(ii) 

UPR

CDI

(iii) 
(iv) 
(v) 

IGP-M

TJLP

IPCA

Total loans and financing in local currency 

   December 31, 2010   December 31, 2009

2,529,398  
2,064,714  
493,869  
703,710  
223,996  

6,015,687  

2,193,114

1,132,376

808,997

467,006

210,836

4,812,329

(i) UPR (Unidade Padrão de Referência), a Reference Standard Unit, which is equal to the TR (Taxa Referencial), a Reference Rate. 
(ii) CDI (Certificado de Depósito Interbancário), an interbank deposit certificate. 
(iii) IGP-M (Índice Geral de Preços do Mercado), a   general market price index. 
(iv) TJLP (Taxa de Juros a Longo Prazo), a long-term interest rate index. 
(v) IPCA (Índice Nacional de Preços ao Consumidor Amplo),  a consumer  price index. 

Another risk to which the Company is exposed, is the mismatch of the monetary restatement indices of its loans and financing 
with those of its receivables. Water supply and sewage services tariffs do not necessarily follow the increases in the interest 
rates affecting the Company's indebtedness. 

As of December 31, 2010, if interest rates on loans and financing denominated in Brazilian reais  had been 100 basis points 
higher or lower with all other variables held constant, post-tax profit would have been R$39,338 (2009 - R$31,761) lower or 
higher, mainly as a result of a lower or higher interest expense on floating rate loans and financing. 

(b)         Credit risk 

Credit risk arises from cash and cash equivalents, deposits in banks and financial institutions, as well as credit exposures to 
wholesale and retail customers, including outstanding accounts receivable. The Company is required by law to invest its 
surplus cash with financial institutions controlled by the State Government. Credit risk exposure to retail customers is 
mitigated by sales to a geographically dispersed customer base.  The maximum exposure to credit risk at the reporting date are 
the amounts of  cash equivalents, deposits in banks and financial institutions, wholesale and retail customers  in the balance 
sheet. (See notes 5, 6 and 7). 

The credit quality of financial assets that are neither past due nor impaired can be assessed by reference to external credit 
ratings (if available) or to historical information about counterparty default rates. The credit quality of counterparties which 
are banks, such as cash and cash equivalents, the Company considers the lower rating of the counterparty published by three 
mainly international agency of rating (Moody's, Fitch e S&P), according to internal policy of management of market risk:   

Cash at bank and short term bank deposits 
   brAAA  
   brAA+ 
   Others (*) 

(*) This category is comprised by banks which have no credit rating information available. 

F-27 

December 31, 
2010 

   December 31, 

2009 

27,673 
1,945,697 
14,634 
1,988,004 

29,936 
834,920 
17,327 
882,183 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
  
  
  
  
  
  
   
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The available credit rating information of the banks in which the Company made transactions during 2010 is as follow: 

Banks 

Banco do Brasil S.A. 
Banco Santander Brasil S.A. 
Caixa Economica Federal 
Banco Bradesco S.A. 
Itaú Unibanco Holding S.A. 

(c)         Liquidity risk 

Fitch 

Moody's 

AA+ (bra) 
AAA (bra) 
AA+ (bra) 
AAA (bra) 
AAA (bra) 

Aaa.br 
Aaa.br 
Aaa.br 
Aaa.br 
Aaa.br 

Agencies’ rate 
Standard 
Poor's 

brAAA 
brAAA 
- 
brAAA 
AAAbr 

The Company's liquidity is primarily reliant upon cash provided by operating activities, borrowings from Brazilian Federal and 
State governmental financial institutions, and financing in the domestic and international capital markets. The liquidity risk 
management considers the assessment of its liquidity requirements to ensure it has sufficient cash to meet operational and 
capital expenditures needs. 

The table below provides the Company's contractual undiscounted cash flows of the financial liabilities into relevant maturities 
based on the balance sheet as of December 31, 2010 and 2009. 

  Less than 1 year  

Between 
1 and 2 years  

Between 

2 and 5 years  More than 5 years  

Total

As of December 31, 2010 
Loans and financing 
Accounts payable to suppliers and contractor 
Other trade accounts payable 

As of December 31, 2009 
Loans and financing 
Accounts payable to suppliers and contractor 
Other trade accounts payable 

1,744,324  
144,043  
326,507  

2,071,161  
-  
-  

3,834,599  
-  
-  

4,880,026   12,530,110
-  
144,098
-  
326,507

1,252,888  
195,765  
239,494  

1,334,888  
-  
-  

2,591,103  
-  
-  

3,182,542   8,361,421
-  
195,765
-  
239,494

There are no financial assets or liabilities included in “Other assets” or “Other liabilities” and there are no guarantees provided by SABESP 
that are required to be disclosed. 

3.2         Capital management 

The Company's objectives when managing capital are ensure its ability to continue as a going concern in order to provide 
returns for shareholders and benefits for other stakeholders, and to maintain an optimal capital structure to reduce the cost of 
capital. 

The Company monitors capital based on the leverage ratio. This ratio corresponds to net debt divided by total capital. Net debt 
corresponds to total loans and financing less cash and cash equivalents. Total capital is calculated as total equity as shown in 
the consolidated balance sheet plus net debt. 

F-28 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
  
   
   
   
 
    
  
   
   
   
 
  
  
  
  
  
   
   
   
   
 
  
   
   
   
   
 
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Total loans and financing 
Less: cash and cash equivalents 

Net debt 
Total equity 

Total capital 

Leverage ratio 

December 
31, 2010  

December 
31, 2009

8,264,615  
(1,989,179)  

6,275,436  
9,681,800  

6,557,970
(771,008)

5,786,962
8,438,584

15,957,236  

14,225,546

39,3%  

40.7%

In 2010, the Company's leverage ratio decreased to 39,3% as of December 31, 2010, compared to 40.7% as of December 31, 
2009, due to increase in short term investments. 

3.3         Fair value estimates 

The Company adopted the amendment to IFRS 7 for financial instruments that are measured in balance sheet at fair value, 
which requires the disclosure of fair value measurements by level of the following fair value measurement hierarchy: 

.     Quoted prices (unadjusted) in active markets for identical assets and liabilities (level 1). 

.     Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly (that is, 

as prices) or indirectly (that is, derived from prices) (level 2). 

.     Inputs for the asset or liability that are not based on observable market data (that is, unobservable inputs) (level 3). 

The fair value of financial instruments traded in active markets is based on quoted market prices at the balance sheet date. A 
market is regarded as active if quoted prices are readily and regularly available from an exchange, dealer, broker, industry 
group, pricing or service, or regulatory agency, and those prices represent actual and regularly occurring market transactions 
on an arm's length basis. The quoted market price used for financial assets is the current bid price. These instruments are 
included in level 1. 

The fair value of financial instruments that are not traded in an active market (for example, time deposits and certificates of 
bank deposit) is determined by using valuation techniques. These valuation techniques maximize the use of observable market 
data where it is available and rely as little as possible on entity specific estimates. If all significant inputs required to fair value 
an instrument are observable, the instrument is included in level 2. 

If one or more of the significant inputs is not based on observable market data, the instrument is included in level 3. 

Specific valuation techniques used to value financial instruments include: 

.     Quoted market prices or dealer quotes for similar instruments. 

.     Other techniques, such as analysis of discounted cash flows, are used to determine the fair value of the remaining financial 

instruments. 

F-29 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
  
  
  
   
 
  
  
  
  
   
 
  
  
  
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The only financial instrument measured at fair value are represented by the short-term investment on Certified of Bank 
Deposits (CDB), classified as cash equivalent, amounting to R$ 1,853,177 and R$672,640 in December 31, 2010 and 2009, 
respectively. These investments are measured at fair value at level 2. 

3.4         Financial Instruments 

The Company operates with many financial instruments, particularly cash and cash equivalents, including financial 
investments, and loans and financing as described below. 

The estimated fair values of financial instruments are as follows: 

December 31, 2010  

 December 31, 2009

Carrying amount  

Fair value   Carrying amount  

Fair value

Financial assets 
   Cash and cash equivalents 
   Restricted cash 
   Customer accounts receivable,net 
   Accounts receivable from related  
      party, net 
   Escrow deposits 
   Indemnities receivable 

Financial liabilities 
   Loans and financing 
   Accounts payable to suppliers and  
      Contractors 

Loans and financing 

1,989,179  
302,570  
1,324,157  

368,848  
43,543  
146,213  

1,989,179  
302,570  
1,324,157  

368,848  
43,543  
146,213  

8,264,615  

144,098  

9,698,547  

144,098  

771,008  
112,750  
1,446,273  

396,352  
46,365  
146,213  

6,557,970  

195,765  

771,008

112,750

1,446,273

396,352

46,365

146,213

7,812,890

195,765

The fair value of the loans and financing as of December 31, 2010 and 2009 are as follow. 

Bank loans  

Foreign currency (i) 

Debêntures (ii) 

BNDES (iii) 

Other (iv) 

The fair value was obtained as follow: 

December 31, 2010 

December 31, 2009 

Carrying amount  Market value 

Carrying amount  Market value 

2,937,619 

3,372,377 

509,572 

2,878,979 

9,698,547 

1,745,641 

1,314,903 

272,685 

3,224,741 

6,557,970 

2,446,340

1,584,513

272,685

3,509,352

7,812,890

2,248,928 

2,771,562 

509,572 

2,734,553 

8,264,615 

F-30 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
 
  
  
   
   
   
 
   
   
   
 
  
   
   
   
 
   
   
   
 
  
  
  
  
  
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(i)                 Financing in foreign currency are controlled in the original currency, converted using the exchange rate as of 
the  balance  sheet  date,  discounted  to  present  value  considering  an  future  exchange  rate  published  by 
Bloomberg, based on the price of the shares negotiated in the open market. 

(ii)                Debentures  are  considered  by  their  carrying  amount  plus  contractual  interest  rate  till  mature  date  and 
discounted  to  present  value  considering  the  future  interest  rate  published  by  ANBIMA  in  the  secondary 
market, as of December 31, 2010 and the Company’s share traded in the Brazilian market. 

(iii)              BNDES  loans  are financial  instruments  valued  at  carrying  amount  plus  contractual  interest  rate  till  mature 
date, and are indexed by long term interest rate – TJLP, which is a specific rate and cannot be compared to 
any  other  rate  available  in  the  market.  The  Company  considers  the  market  value  of  the  financing  the  same 
amount recognized in the financial statements as of December 31, 2010. 

(iv)              Other financing in local currency are considered by carrying amount plus contractual interest rate till mature 

date, discounted to present value considering an future interest rate published by BM&F. 

4             Critical accounting estimates and judgments 

Estimates and judgments are continually evaluated and are based on historical experience and on other factors, including 
expectations of future events that are believed to be reasonable under the circumstances.  

4.1          Critical accounting estimates and assumptions 

The Company makes estimates and assumptions concerning the future. The resulting accounting estimates will, by definition, 
seldom equal the related actual results. The estimates and assumptions that have a significant risk of causing material 
adjustment to the carrying amounts of assets and liabilities within the next financial year are addressed below: 

(a)          Allowance for doubtful accounts 

The Company records allowance for doubtful accounts in an amount that management considers sufficient to cover probable 
losses, based on an analysis of customer accounts receivable, in accordance with the accounting policy stated in Note 2.8. 

The methodology for determining the allowance for doubtful accounts receivable requires significant estimates, considering a 
number of factors including historical collection experience, current economic trends, estimates of forecast write-offs, the 
aging of the accounts receivable portfolio and other factors. While the Company believes that the estimates used are 
reasonable, actual results could differ from those estimates. 

(b)          Intangible assets arising from concession contracts 

The Company recognizes intangible assets arising from concession contracts under IFRIC 12. The Company estimates the fair 
value of construction and other work on the infrastructure to recognize the cost of the intangible asset, which is recognized 
when the infrastructure is built and provided that it will generate future economic benefits. The great majority of the 
Company's contracts for service concession arrangements entered with each grantor is under service concession agreements in 
which the Company has the right to receive, at the end of the contract, a payment equivalent to the unamortized asset balance 
of the concession intangible asset, which in this case, are amortized over the useful life of the underlying physical assets, thus 
at the end of the contract, the remaining value of the intangible would be equal to the residual value of the related physical 
asset.  

F-31 

  
  
  
  
  
                                             
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Concession intangible assets under Concession contracts and Program contracts, in which, at the end of the contract, the 
Company has no right to receive a payment equivalent to the unamortized asset balance of the concession intangible, are 
amortized on a straight-line basis over the useful life of the contract. Additional information on the accounting for intangible 
assets arising from concession contracts is disclosed in Note 2.11(a). 

The recognition of fair value for the intangible assets arising on concession contracts is subject to assumptions and estimates, 
and the use of different assumptions could affect the balances recorded. The estimated useful lives of the underlying assets also 
requires significant assumptions and estimates, which different assumptions and estimates and changes in future 
circumstances, could affect the remaining useful lives of the intangible assets and can have a significant impact on the results 
of operations. 

(c)          Impairment of long-lived assets 

The Company reviews annually long-lived assets for indicators of impairment, primarily intangible assets arising from 
concession contracts, which include water and sewage system physical assets to be held and used in the business, for the 
purpose of determining and measuring impairment when events or changes in circumstances indicate that the carrying value 
of an asset or group of assets may not be recoverable. The assets include the intangible asset of the concession contracts related 
to water and sewage systems. 

In evaluating impairment of long-lived assets, the evaluation requires significant assumptions and estimates regarding matters 
that are inherently uncertain, including projections of future operating income and cash flows, future growth rates, and the 
remaining useful lives of the assets and/or the period of the contract, among other factors. In addition, projections are 
computed over an extended period of time, which subjects those assumptions and estimates to an even larger degree of 
uncertainty. While the Company believes that the estimates used are reasonable, the use of different assumptions could 
materially affect the recoverable amount. 

No impairment provisions were required in 2010, 2009 and 2008. 

(d)          Provisions 

The Company is party to a number of legal proceedings involving significant claims. These legal proceedings include, among 
other types, tax, labor, civil, environmental, dispute with customers and suppliers and other proceedings. Additional 
information of these legal proceedings is disclosed in Note 15. The Company accrues for probable losses resulting from these 
claims and proceedings when the Company determines that the likelihood that a loss has occurred is probable and the amount 
of such loss can be reasonably estimated. Therefore, the Company is required to make judgments regarding future events. As a 
result of the significant judgment required in assessing and estimating these provisions for contingencies, actual losses realized 
in future periods could differ significantly from actual estimates and could exceed the amounts provisioned. 

Provisions are measured at the present value of the expenditures expected to be required to settle the obligation using a pre-
tax rate that reflects current market assessments of the time value of money and the risks specific to the obligation. The 
increase in the provision due to passage of time is recognized as interest expense. 

F-32 

  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(e)          Pension benefits 

The present value of the pension obligations depends on a number of factors that are determined on an actuarial basis using a 
number of assumptions. The assumptions used in determining the net cost (income) for pensions include the discount rate. 
Any changes in these assumptions will impact the carrying amount of pension obligations. 

The Company determines the appropriate discount rates at the end of each year, which is the interest rate that should be used 
to determine the present value of estimated future cash outflows expected to be required to settle the pension obligations.  

Other key assumptions for pension obligations are based in part on current market conditions. Additional information on the 
pension plans under Plan G0 and G1 is disclosed in Note 16. 

Differences in actual experience or changes in assumptions could affect the carrying amount of pension obligations and 
expenses recognized in the Company's results. 

5             Cash and Cash Equivalents 

Cash and banks 
Cash equivalents 

December   
31, 2010  

December
31, 2009

136,002  
1,853,177  
1,989,179  

98,368
672,640
771,008

Cash and cash equivalents are denominated in Reais. Cash equivalents are mainly represented by Bank Deposit Certificates - 
CDB's, deposited in financial institutions controlled by the São Paulo State Government. 

6             Restricted Cash 

In December 31, 2010, the restricted cash totaled R$ 302,570 and was recognized in the current asset and was related to the 
last installment to be available of the 12th debenture, amounting to R$ 172,442. This refers to proceeds from services provided 
to entities related to the Municipal Government of São Paulo, net of taxes, which include: day-care centres, schools, 
management offices, and health centres, whose funds shall be reinvested in the water and sewage system of the city of São 
Paulo.  

7             Customer Accounts Receivable 

(a)          Balance sheet balances  

F-33 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Private sector: 
General and special customers (i) (ii) 
Agreements (iii) 

Government entities: 
Municipal 
Federal 
Agreements (iii) 

Wholesale customers - Municipal governments: (iv) 
Guarulhos 
Mauá 
Mogi das Cruzes 
Santo André 
São Caetano do Sul 
Diadema 

Total wholesale customers 

Unbilled supply 

Subtotal 
Allowance for doubtful accounts 

Total  

Current 
Noncurrent (v) 

December  
31, 2010  

December

31, 2009

828,261  
250,300  

1,078,561  

556,212  
2,645  
170,892  

729,749  

462,221  
220,228  
18,818  
489,486  
3,537  
149,155  

1,343,445  

391,822  

3,543,577  
(2,219,420)  

1,324,157  

971,318  
352,839  

776,040

261,139

1,037,179

569,655

2,871

143,575

716,101

411,774

190,153

14,188

428,227

3,410

134,992

1,182,744

364,480

3,300,504

(1,854,231)

1,446,273

1,179,730

266,543

(i)    General customers - residential and small and mid-sized companies. 

(ii)  Special customers - large consumers, commercial, industries, condominiums and special billing consumers (industrial waste, wells, etc.). 

(iii) Agreements - installment payments of past-due receivables, plus monetary restatement and interest. 

(iv)  Wholesale customers - municipal governments - This balance refers to the sale of treated water to municipalities, which are responsible for distributing 
to, billing and charging final customers. Some of these municipalities are questioning in court the tariffs charged by SABESP and do not pay for the 
amounts in dispute. The amounts past due, which are substantially included in the allowance for doubtful accounts, are classified in noncurrent assets 
pursuant to the changes below: 

Balance at beginning of year 
      Services provided 
      Receipts - services in the current year 
      Receipts - services in previous years 

2010  

2009  

1,182,744  
353,546  

(183,882)

(8,963)

1,074,368  
332,975  
(164,266)  
(60,333)  

2008

961,184

314,288

(135,347)

(65,757)

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
   
 
  
   
 
  
  
   
 
   
 
  
   
 
  
  
   
 
   
 
  
   
 
  
   
 
  
   
 
  
   
 
  
   
 
 
 
   
  
  
 
 
   
 
 
 
Balance at end of year 

Current 
Noncurrent 

1,343,445  

1,182,744  

1,074,368

38,665  
1,304,780  

68,898  
1,113,846  

51,384

1,022,984

F-34 

  
 
 
   
 
  
 
 
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(v)   The noncurrent portion consists of trade accounts receivable that are past due and renegotiated with customers and amounts past due related to 

wholesale to municipal governments, and the amounts are net of allowance for doubtful account. 

(b)          The aging of trade accounts receivable is as follows: 

Current 
Past-due: 
Up to 30 days 
From 31 to 60 days 
From 61 to 90 days 
From 91 to 120 days 
From 121 to 180 days 
From 181 to 360 days 
Over 360 days 

Total past-due 

Total  

(c)          Allowance for doubtful accounts 

Previous balance 
Private sector/government entities 
Wholesale customers 

Additions for the year 

Balance  

Current 
Noncurrent 

December   
31, 2010  

December

31, 2009

1,086,344  

1,002,506

150,358  
67,539  
45,153  
39,084  
73,300  
119,967  
1,961,832  

2,457,233  

3,543,577  

2010  

1,854,231  
200,321  
164,868  

365,189  

2,219,420  

1,075,939  
1,143,481  

160,979

68,247

47,349

51,887

56,845

112,472

1,800,219

2,297,998

3,300,504

2009

1,633,289

30,105

190,837

220,942

1,854,231

852,420

1,001,811

The Company accounted for probable losses on accounts receivable in 2010 totaling R$ 232,505 (December 31, 2009 – R$ 
117,351), of which R$ 37,505 (net of recoveries) were written off from accounts receivable (in 2009 - R$ 74,857), under Selling 
expenses.  

The Company does not rely on any specific major customers and no single external customer segment represents 10% or more 
of our revenues. 

F-35 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
   
 
  
   
 
  
   
 
  
  
   
 
  
   
 
  
   
 
  
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

8             Related Party Balances and Transactions 

The Company is a party to transactions with its controlling shareholder, the State Government, and companies related to it.  

(a)          Accounts receivable, interest on shareholders' equity payable and revenue and expenses with the São Paulo State 
Government 

Accounts receivable 
Current: 
   Water and sewage services (i) 
   GESP Agreement (iii) 
   Allowance for losses  (i) 
   Reimbursement for pension benefits paid - 
      GESP Agreement (ii) 
   Reimbursement for 
      pension benefits paid - Monthly flow (ii) 

Total current 

Non-current: 
   Water and sewage services - GESP  
      Agreement (iii) 
   Reimbursement for 
      pension benefits paid - GESP Agreement (ii) 

Total noncurrent 

Total receivables from shareholder 

Provision of water and sewage services 
Reimbursement of additional retirement and  
   pension benefits (ii) 

Total 

Interest on shareholders' equity payable to related party 

F-36 

December  
31, 2010  

December
31, 2009

96,004  
21,360  
(12,389)  

28,203  

4,594  

82,278
26,181
(12,389)

25,494

14,423

137,772  

135,987

52,228  

178,848  

73,414

186,951

231,076  

260,365

368,848  

396,352

157,203  

169,484

211,645  

226,868

368,848  

396,352

179,319  

198,099

  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
   
 
   
 
   
 
   
 
  
   
 
  
   
 
   
 
   
 
   
 
  
   
 
  
   
 
  
   
 
   
 
  
   
 
  
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Gross revenue from sales and services 
Water supply  
Sewage services 
Payments received from related parties 
Financial income 

(i)     Water and sewage services 

2010  

2009  

2008

204,595  
178,935  

(401,626)

137,613  

193,771  
164,532  
(349,983)  
73,927  

186.286
157,349
(281,823)
62,179

The Company provides water supply and sewage collection services to the São Paulo State Government and other 
companies related to it in accordance with usual market terms and conditions, except for the settlement of receivables 
outstanding under the Agreement with the São Paulo State Government, as amended. 

(ii)   Reimbursement for pension benefits paid  

Refers to amounts of supplementary retirement and pension benefits provided for in State Law 4819/58 ("Benefits") paid 
by the Company to former employees and pensioners. 

Under the Agreement with the São Paulo State Government ("GESP" or the "State"), dated December 11, 2001, GESP 
recognizes its liability from charges arising from the Benefits, provided that the payment criteria set forth by the State 
Department of Personnel (DDPE), based on legal guidance of the Legal Consultancy of the Department of Finance and of 
the State Attorney General's Office (PGE). 

As discussed on item (vii), during the assessment of the debt due from GESP to the Company there were certain 
divergences in the calculation and eligibility criteria of the benefits paid by the Company on behalf of GESP. 

For the years ended December 31, 2010, 2009 and 2008, 2,554, 2,597 and 2,604 retired employees, respectively, received 
additional retirement benefits, and for the years ended December 31, 2010, 2009 and 2008, the Company paid 118,408, 
R$ 116,082, R$ 110,763 respectively. There were 32 active employees as of December 31, 2010 who will be entitled to 
these benefits as a result to their retirement as compared to 91 as of December 31, 2009 and 143 as of December 31, 2008. 

In January 2004, the payments of supplement retirement and pension benefits were transferred to the Department of 
Finance and would be made in accordance with the calculation criteria determined by the PGE. As a result of a court 
decision, the responsibility for making the payments returned to SABESP, as originally established. 

(iii) GESP Agreement 

On December 11, 2001, the Company, the São Paulo State Government (through the State Department of Finance Affairs, 
currently Department of Finance) and the Water and Electricity Department (DAEE), with the intermediation of the State 
Department of Sanitation and Energy (former Department of Water Resources, Sanitation and Construction Works), 
entered into the Obligations, Payment Commitment and Other Covenants Acknowledgement and Consolidation 
Agreement ("GESP Agreement") for the settlement of outstanding debts between GESP and the Company related to the 
provision of water supply and sewage services and to the Benefits. 

F-37 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
   
 
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

In view of the strategic importance of the Taiaçupeba, Jundiaí, Biritiba, Paraitinga and Ponte Nova reservoirs for ensuring 
and maintaining the Upper Tietê water volume, the Company agreed to receive them as partial repayment of the 
reimbursement related to the Benefits. The DAEE would transfer the reservoirs to the Company, replacing the amount 
owed by GESP. However, the São Paulo State Public Prosecution Office challenged the legal validity of this agreement, 
and its main argument is the absence of a specific legislative authorization for disposal of DAEE's assets. The Company's 
legal advisors assess the risk of loss in this lawsuit as probable, in case the legislative authorization is not obtained, which 
would hinder the transfer of the related reservoirs as a partial settlement of the balance receivable.  

(iv) First Amendment to the GESP Agreement 

On March 22, 2004, the Company and the São Paulo State Government amended the terms of the original GESP 
Agreement, (1) consolidating and recognizing the amounts due by the São Paulo State Government for water supply and 
sewage collection services provided, monetarily adjusted through February 2004; (2) formally authorizing the offset of 
amounts due by the São Paulo State Government with interest on shareholders' equity declared by the Company and any 
other debt owed to the São Paulo State Government as of December 31, 2003, monetarily adjusted through February 
2004; and (3) defining the payment conditions of the remaining liabilities of the São Paulo State Government for the 
receipt of the water supply and sewage services. 

(v)    Second Amendment to the GESP Agreement 

On December 28, 2007, the Company and the São Paulo State Government, represented by the Department of Finance, 
signed the second amendment to the terms of the original GESP Agreement, agreeing upon the payment in installments of 
the remaining balance of the First Amendment, amounting to R$ 133,709 at November 30, 2007, to be paid in 60 
monthly and consecutive installments of the same amount, beginning on January 2, 2008. The amount of the 
installments will be monetarily restated according to the fluctuation of the IPCA-IBGE, plus interest of 0.5% per month.  

The State and SABESP agreed on immediately resuming their compliance with their mutual obligations under new 
assumptions: (a) implementation of an electronic bill management system to facilitate and speed up the monitoring of 
payment processes and budget management procedures; (b) structuring of the Rational Water Use Program (PURA) to 
rationalize the consumption of water and the amount of the water and sewage bills under the responsibility of the State;  
(c) establishment, by the State, of criteria for budgeting so as to avoid the reallocation of amounts to a specific water and 
sewage accounts as from 2008; (d) possibility of registering state bodies and entities in a delinquency system or reference 
file; (e) possibility of interrupting water supply to state bodies and entities in the case of nonpayment of water and sewage 
bills. 

 (vi) Third Amendment to the GESP Agreement 

On November 17, 2008, GESP, SABESP and DAEE signed the third amendment to the GESP Agreement, through which 
GESP recognized a debt balance payable to SABESP totaling R$ 915,251, monetarily adjusted up to September 2008 in 
accordance with the fluctuation of the IPCA-IBGE, corresponding to the Undisputed Reimbursement, determined by 
FIPECAFI. SABESP accepted on a provisional basis the reservoirs as part of the payment of the Undisputed 
Reimbursement and offered to GESP a provisional settlement, recognizing a credit totaling R$ 696,283, corresponding to 
the value of the reservoirs in the Upper Tietê system. The Company did not recognize the reimbursement receivable of 
R$696,283 related to the reservoirs, as it is not virtually certain that will be transferred by the State. The final settlement 
will only be effected with the actual transfer of the property with the proper Registry of Deeds Office. The remaining 
balance totaling R$ 218,967 is being paid in 114 monthly, consecutive installments, totaling R$ 1,920 each, including the 
annual IPCA/FIPE fluctuation, plus interest of 0.5% p.m., the first of which fell due on November 25, 2008. 

F-38 

  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The Company and the São Paulo State Government are working together to obtain legislative authorization to transfer the 
reservoirs to SABESP, overcoming the uncertainties arising from the public lawsuit challenging the absence of a specific 
legislative authorization for the transfer of the property of the reservoirs. The reservoirs will be transferred to the 
Company after the publication of a legislative authorization.  

In addition, the third amendment provides for the regularization of the monthly flow of benefits. While SABESP is liable 
for the flow of monthly payment of benefits, the State shall reimburse SABESP based on the criteria identical to those 
applied when determining the Undisputed Reimbursement. Should there be no preventive court decision, the State will 
assume the flow of monthly payment of benefits portion deemed as undisputed. 

(vii) Controversial Amount of Benefits 

As mentioned before, on November 17, 2008 the Company and the State signed the third amendment to the GESP 
Agreement, when the reimbursements called disputed and undisputed were quantified. The amendment established the 
efforts to calculate the so-called Disputed Reimbursement of the Benefits. Under the fourth clause of the amendment, the 
Disputed Reimbursement represents the difference between the Undisputable Reimbursement and the amount actually 
paid by the Company as pension benefits and pensioners set out in Law 4819/58, for which, the Company understands, 
the State of São Paulo is originally liable, but paid by SABESP by May 2008, under a court order. 

By entering into the third amendment, the State's Legal Representative (PGE) agreed to reassess the differences that gave 
rise to the disposed reimbursement of benefits set out in Law 4819/58. At the time, the expectation was based on the 
willingness of the PGE to reanalyze the issue and the implied right of the Company to the reimbursement, including based 
on opinions from outside legal advisors. 

However, new opinions issued by the PGE and received on September 4 and 22, 2009 and January 4, 2010, refute the 
reimbursement of the largest portion of the controversial amount.  

Even though the negotiations with the State are still in progress, it is not possible to assure that the Company will recover 
the receivables related to the Disputed Reimbursement without dispute. 

As part of the actions intended to recover the receivables that management considers due by the State, related to 
discrepancies in the reimbursement of the pension benefits paid by the Company, the Company: (i) on March 24, 2010, 
reported to the controlling shareholder the official letter approved by the executive committee, proposing that the matter 
be discussed at the São Paulo Stock Exchange (BM&FBovespa) Arbitration Chamber; (ii) in June 2010, presented to 
Department of Finance a proposal to solve the outstanding items, such proposal was not accepted; (iii) on November 9, 
2010, filed a judicial action against the State of São Paulo pleading the entire reimbursement related to employee benefits 
set out in Law 4819/58 to finalize the discussion between the Company and GESP. The Company will persist to obtain an 
agreement with GESP since the management believes that it is the better to the Company and to its shareholders than 
wait until the end of the judicial action. 

F-39 

  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The Company's management decided to not recognize the reimbursements which were not considered virtually certain 
that will be reimbursed by the State. As of December 31, 2010 and 2009, the amounts not recorded by the Company, 
related to the pension benefits paid on behalf of the State by the Company, totaled R$ 1,230,064 and R$ 1,167,874, 
respectively, including the amount of R$ 696,283 related to the transfer of the reservoirs in the Upper Tietê system. As a 
result, the Company also recognized the obligation related to the pension benefit obligations maintained with the 
beneficiaries and pensioners of Plan G0, whose right it is to be paid by SABESP and is not considered virtually certain that 
SABESP will be reimbursed by the State. As of December 31, 2010 and 2009, the pension benefit obligations of Plan G0 
totaled R$ 1,316,706 and R$ 1,299,761, respectively. For detailed information on the pension benefit obligations refer to 
Note 16. 

 (b)         Agreements for the use of reservoirs 

In its operations, the Company uses the Guarapiranga and Billings reservoirs, which are owned by another entity controlled by 
the São Paulo State Government; should these reservoirs not be available for use to the Company, there could be the need to 
collect water in more distant places. The Company does not pay any fee for the use of these reservoirs but it is responsible for 
their maintenance and operating costs. 

(c)          Agreements with reduced tariffs with State and Municipal Government Entities that joined the Rational Water Use 
Program (PURA).  

The Company has signed agreements with government entities related to the State Government and municipalities where it 
operates involving approximately 6,803 properties that benefit from a reduction of 25% in the tariff of water supply and 
sewage services when they are not in default. These agreements provide for the implementation of the rational water use 
program, which takes into consideration the reduction in the consumption of water. 

 (d)         Guarantees 

The State Government provides guarantees for some loans and financing of the Company and does not charge any fee with 
respect to such guarantees.  

(e)          Personnel assignment agreement among entities related to the State Government 

The Company has personnel assignment agreements with entities related to the State Government, under which the expenses 
are fully passed on and monetarily reimbursed. In 2010, the expenses related to personnel assigned by SABESP to other state 
government entities amounted to R$ 5,640 (2009 - R$ 5,359 and 2008 - R$ 5,503). 

In the same period, the expenses related to personnel assigned by other entities to SABESP totaled R$ 264 (2009 - 335 and 
2008 - 1,267). 

F-40 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(f)           Services obtained from state government entities 

As of December 31, 2010 and 2009, SABESP had an outstanding amount payable of R$ 11,395 and R$ 10,384, respectively, for 
services rendered by São Paulo State Government entities, including the supply of electric power by Companhia Energética de 
São Paulo - CESP. 

As of December 31, 2010 and 2009, accounts payable for expenses related to construction works performed by DAEE 
amounted to R$ 11,135. 

(g)          Nonoperating assets 

As of December 31, 2010 the Company had an amount of R$ 25,371 (December 31, 2009 - R$ 26,411) mainly related to free 
land lend to the associations, support entities, non-governmental organizations and to DAEE (Water and Electricity 
Department), among others. The free land lend to DAEE amounts to R$ 2,289. 

(h)          Banco do Brasil 

The Company filed a declaratory action against the Department of Finance of São Paulo, nº 000317-53.2011.8.26.0053, in the 
3rd Civil Court. The State of São Paulo alienated exclusive rights in bank services of the companies managed direct and 
indirectly by Banco Nossa Caixa, on March 27, 2007; and by Banco do Brasil on May 27, 2010. In this judicial action, the 
Company asks for financial compensation related to the alienation of its exclusive rights. The Company is asking for a 
percentage of the amounts that the Estate of São Paulo received from the financial institutions. 

(i)           SABESPREV 

The Company sponsors a private defined benefit pension plan, which is operated and administered by Fundação SABESP de 
Seguridade Social - SABESPREV. The net actuarial liability recognized as of December 31, 2010 amounted to R$ 487,332 
(December 31, 2009 - R$ 531,992). 

(j)           Key management compensation 

Management Fees 

SABESP's compensation policy for directors and officers is set out according to guidelines of the São Paulo State Government, 
the CODEC (State Capital protection Board), and are based on performance, market competitiveness, or other indicators 
related to the Company's business, and is subject to approval by shareholders at an Annual Shareholders' Meeting. 

Officers' compensation is limited to the compensation of the State Governor, and the Board of Directors' compensation is 
equivalent to 30 percent of the executive committee' overall compensation, contingent on attendance of at least one monthly 
meeting.  

The objective of the compensation policy is to set a private sector management paradigm to retain its staff and recruit 
competent, experienced and motivated professionals, considering the level of management efficiency currently required by the 
Company. 

In addition to monthly fee, the members of the Board of Directors and the Executive Committee receive: 

F-41 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Bonuses 

For the purposes of compensating directors and officers of the companies where the State is the controlling shareholder, as an 
incentive policy, providing the company records quarterly, half-yearly, and yearly profits, and distributes mandatory dividends 
to shareholders, even if in the form of interest on shareholders' equity. Annual bonuses cannot exceed the lower of six times 
the monthly compensation of the officers/directors nor 10 percent of the interest on shareholders' equity paid by the company. 

Annual award: equivalent to a monthly fee, calculated on a prorated basis in December of each year. 

The purpose of this award is to correspond to the thirteenth salary paid to Company employees, as officers and directors' 
relationship with the Company is governed by its bylaws and not the labor code. 

Benefits: paid only to officers - meal ticket, basket of food staples, medical care, weekly paid rest typified as a paid leave of 30 
calendar days, and payment of a premium equivalent to one third of the monthly fee. 

The compensation paid by the Company to the members of its board of directors and officers amounted to R$ 2,601, R$ 2,606 
and R$ 2,444 for the years ended December 31, 2010, 2009, and 2008, respectively, and it refers to salaries and other short-
term benefits to employees and management. An additional amount of R$ 845, related to the bonus program, also a short term 
benefit, was accrued as of December 31, 2010 (December 31, 2009 - R$ 856; December 31, 2008 - nihil). 

9             Indemnities Receivable 

Indemnities receivable are a noncurrent asset that represents amounts receivable from the Municipalities of Diadema and 
Mauá as an indemnity for their unilateral termination of the concessions for water supply and sewage services of the Company 
in 1995. As of December 31, 2010 and 2009, this balance totaled R$ 146,213. 

Due to these concession agreements, the Company invested in the construction of water and sewage systems in those 
municipalities in order to meet the concession service commitments. For the unilateral termination of the Diadema and Mauá 
concessions, the municipalities assumed the responsibility of supplying water and sewage services in those regions. At that 
time, the Company reclassified the balances of property, plant and equipment related to the assets used in those municipalities 
to noncurrent assets (indemnities receivable). 

As of December 31, 2010, the net book value of property, plant, and equipment relating to the municipality of Diadema, 
reclassified in December 1996, amounted to R$ 75,231 and the indemnity balance from the municipality amounted to 
R$ 60,295, on December 31, 2010. 

As of December 31, 2010, the net book value of property, plant, and equipment relating to the municipality of Mauá, 
reclassified in December 1999, totaled R$ 103,763 and the indemnities receivables the municipality totaled R$ 85,918. 

The Company's right to recover these amounts have been challenged by the municipalities. 

F-42 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

SABESP filed lawsuits to collect the amounts due by the municipalities. With respect to Diadema, the decision of the lower 
court judge was unfavorable to SABESP, which filed an appeal in November 2000. In December 2005, SABESP's appeal to 
have the agreement entered into with the municipality of Diadema declared valid was partially accepted. Even though this 
Municipal Government filed appeals against this decision, they were all denied and unappealable decision was issued in April 
2009. In December 2007, the decision that accepted the execution of the Companhia de Saneamento the Diadema - Saned was 
rendered, ordering this company to be summoned to pay the full amount of the debt within 15 days under the penalty of fine. 
Saned filed an interlocutory appeal against the decision but the appeal was rejected by the Court of Justice in June 2008. The 
judge approved the seizure of cash from Saned's bank accounts and short-term investments (online seizure) of up to 10% of the 
adjusted debt. An appeal was filed against this decision, but the Appellate Court upheld the final and unappealable decision. 
R$ 2,919 were seized and withdrawn on March 3, 2009. Subsequently, the Court of Justice issued an injunction determining 
the seizure through weekly deposits by Saned in the amount corresponding to 20% of everything received in its bank accounts 
and short-term investments. This injunction was confirmed in sentence of the Court of Justice, which can still be appealed. 

On December 29, 2008, Saned and the Municipality of Diadema entered into a Letter of Intent with the São Paulo State and 
SABESP for the purpose of preparing studies and conducting negotiations to guide Diadema's and SABESP's decisions, aiming 
to establish SABESP as the exclusive provider of water supply and sewage services for the City of Diadema. 

The parties agree that the settlement of the existing conflicts between the companies is indispensable for the proper 
development of the public utility services of water supply and sewage services in the municipality of Diadema. 

In January 2009, the parties filed a joint petition requesting the suspension of new seizures, for a three-month period, trying 
to enable an agreement. The suspension was confirmed by the Tax Court. As the settlement on which a possible agreement will 
be based was maintained, the suspension request was last renewed in April 2010. 

With respect to Mauá, a lower court decision demanded this Municipality pay the amount of R$ 153.2 million to SABESP as a 
compensation for loss of profits. In April 2005, the Municipality of Mauá filed an appeal against this decision. In July 2006, 
the decision was converted into a measure consisting of an expert clarification on the amount of the indemnity for loss of 
profits. The clarification was provided in December 2007, and the expert confirmed the amount of the loss of profits 
determined by the lower court. In August 2008, the Court of Justice decided for the integral maintenance of the lower court 
decision. The Municipality of Mauá filed special and extraordinary appeals against the decision that confirmed the sentence to 
indemnify SABESP. Both appeals were denied by the Court of Justice, which led to the filing of a bill of review with the 
Superior Court of Justice and Federal Supreme Court. Based on the opinion of its legal advisors, management continues to 
believe that the Company is entitled to receive the amounts related to the indemnity and continues to monitor the status of the 
lawsuits. 

Based on legal opinion, management believes that the Company has legal rights to receive the indemnities and is monitoring 
the judicial lawsuit.  

F-43 

  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

10           Intangible Assets 

Intangible rights arising from  
    concession contracts 
        Service concession agreements 
        Concession contracts 
       Program contracts 
       Program contracts – commitments 
       Service contract – São Paulo 
        New businesses 

Software licenses 

Total 

Movements on the intangible assets are as follows: 

Intangible rights arising on concession contracts 
     Service concession agreements 
     Concession contracts 
     Program contracts 
     Program contracts – commitments 

Software licenses 

Intangible rights arising on concession contracts 
     Service concession agreements 
     Concession contracts 
    Program contracts 
    Program contracts – commitments 

Software licenses 

December 31, 2010  

December 31, 2009

    Accumulated  
Cost   amortization  

Net  

    Accumulated  
Cost   amortization  

Net

13,980,141

706,423  
900,686  
333,942  
6,196,699  
12,129  

(3,242,270)  
(189,145)  
(36,302)  
(22,666)  
(99,837)  
(901)  

10,737,871  
517,278  
864,384  
311,276  
6,096,862  
11,228  

23,074,648  
669,301

794,561
271,194  
-

-

(7,702,533)  
(165,156)  
(21,772)  
(12,391)  
-  
-  

15,372,115

504,145

772,789

258,803

-

-

22,130,020  
49,458  

(3,591,121)  
(41,521)  

18,538,899  
7,937  

24,809,704  
42,679  

(7,901,852)  
(33,114)  

16,907,852

9,565

22,179,478  

(3,632,642)  

18,546,836  

24,852,383  

(7,934,966)  

16,917,417

January  
1, 2008  

    Write-off and  
disposals  

Additions 

Amortization  

December 

31, 2008

13,775,366  
507,789  
8,704  
-  

14,291,859  
-  

869,438  
23,444  
623,391  
252,770  

1,769,043  
29,725  

(176,340)  
-  
-  
-  

(176,340)  
-  

(396,957)  
(21,509)  
(9,712)  
(3,131)  

(431,309)  
(20,123)  

14,071,507

509,724

622,383

249,639

15,453,253

9,602

14,291,859  

1,798,768  

(176,340)  

(451,432)  

15,462,855

December  
31, 2008  

    Write-off and  
disposals  

Additions 

Amortization  

December 

31, 2009

14,071,507  
509,724  
622,383  
249,639  

15,453,253  
9,602  

1,849,993  
17,429  
162,466  
18,424  

2,048,312  
12,954  

(51,778)  
-  
-  
-  

(51,778)  
-  

(497,607)  
(23,008)  
(12,060)  
(9,260)  

(541,935)  
(12,991)  

15,372,115

504,145

772,789

258,803

16,907,852

9,565

15,462,855  

2,061,266  

(51,778)  

(554,926)  

16,917,417

F-44 

  
  
  
  
  
  
  
  
  
  
  
  
   
  
   
   
   
   
   
 
  
   
 
  
   
   
   
   
   
   
 
   
   
   
   
   
 
 
 
 
 
 
  
 
 
   
   
 
 
   
 
  
   
 
 
   
   
 
 
   
 
  
   
  
  
   
   
   
   
   
 
   
   
   
   
 
  
   
   
   
   
 
  
   
  
  
   
   
   
 
  
  
   
  
  
   
   
   
   
   
 
   
   
   
   
 
  
   
   
   
   
 
  
  
   
   
   
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

December  
31, 2009   Additions    Reclassification  

   Write-off 
and  

disposals   Amortization  

    December 
31, 2010

Intangible rights on concession contracts 
     Service concession agreements 
     Concession contracts 
    Program contracts 
    Program contracts – commitments 
    Service contract – São Paulo 
     New businesses 

Software licenses 

15,372,115  
504,145  
772,789  
258,803  
-  
-  

1,767,747  
37,122  
106,125  
62,748  
177,131  
12,129  

16,907,852  

2,163,002  

9,565  

6,779  

16,917,417  

2,169,781  

(6,019,568)  
-  
-  
-  
6,019,568  
-  

(15,857)  
-  
-  
-  
-  
-  

(366,566)  
(23,989)  
(14,530)  
(10,275)  
(99,837)  
(901)  

10,737,871

517,278

864,384

311,276

6,096,862

11,228

-  

-  

-  

(15,857)  

(516,098)  

18,538,899

-  

(8,407)  

7,937

(15,857)  

(524,505)  

18,546,836

The status of our aggregated construction in progress of the underlying assets of concession contracts at the end of the year is 
as follows: 

Construction costs incurred 
Recognized profits less recognized losses 

Construction costs incurred 
Recognized profits less recognized losses 

Construction costs incurred 
Recognized profits less recognized losses 

As of December 31, 2008

Water   
supply  

551,655  
560,346  

Sewage   
services  

1,098,848  
1,116,523  

Total 

1,650,503
1,676,869

As of December 31, 2009

Water   
supply  

760,706  
772,117  

Sewage   
services  

1,248,957  
1,267,691  

Total 

2,009,663
2,039,808

As of December 31, 2010

Water   
supply  

1,028,115  
1,051,419  

Sewage   
services  

1,052,956  
1,079,256  

Total 

2,081,071
2,130,675

There are no contingent assets or liabilities related to the construction contracts outstanding. 

F-45 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
      
  
   
   
      
  
   
   
 
   
      
  
   
   
 
  
   
   
   
   
   
 
  
  
   
   
   
   
   
 
  
   
   
   
   
   
 
  
  
  
   
   
 
  
 
  
  
   
   
 
  
  
   
   
 
  
 
  
  
   
   
 
  
  
   
   
 
  
 
  
  
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Investments committed 

The estimated amount related to investments is R$ 2,262 million to be spent from 2011 to 2015 (unaudited). 

Intangible rights arising from concession contracts 

The Company operates concession contracts as defined by IFRIC 12 covering the provision of basic and environmental sanitation 
services, water supply and sewage services. These concession arrangements set out rights and obligations relative to the 
infrastructure and to the public service (See Note 2.11(a)). A general obligation also exists to return the concession infrastructure to 
the grantor in good working condition at the end of the concession. 

As of December 31, 2010 and 2009, the Company operates in 364 municipalities in the State of São Paulo. In most of these 
municipalities operations are based on 30-year concession period. The agreement with the municipality of São Paulo is accounted 
for as a service concession arrangement. 

The services provided by the Company are billed at a price established by the "Agência Reguladora de Saneamento e Energia do 
Estado de São Paulo" ("ARSESP").Intangible rights arising on concession contracts are comprised of: 

(i) Service concession agreements 

The concession contracts state that the property will revert to the grantor at the end of the period, through compensation 
for the residual value or market value of the underlying physical assets in accordance with the stipulations in each contract 
and amortization are calculated using the straight-line method, which consider the physical assets economic useful lives. 

(ii) Concession contracts 

From 1999 through 2006, the negotiations for new concessions were conducted on the basis of the economic and financial 
profit or loss of the transaction, determined in a valuation report issued by independent appraisers. 

The amount determined in the related contract, after the transaction is closed with the municipal authorities, realized 
through the subscription of the Company's shares or in cash, is recorded as "concession contract" and amortized over the 
period of the related concession (usually 30 years). As of December 31, 2010, 2009 and 2008 there were no amounts 
pending related to these payments to the municipalities. 

Intangible assets are amortized on a straight line basis over the term of the concession agreements or for the useful lives of 
the underlying assets, which was lower, entered into with the related municipality.  

(iii) Program contracts - Commitments 

After the enactment of the regulatory framework in 2007, renewals of concession agreements are made through "program 
contracts". In some program contracts the Company committed to financially participate in social and environmental 
sanitation actions. These assets built and commitments assumed are being amortized on a straight line basis according to 
the effective period of the program contract (mostly 30 years). 
F-46 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

As of December 31, 2010, the amounts not yet disbursed related to commitments under the program contracts are recorded 
in “Other obligations” in current liabilities in the amount of R$ 38,427 and R$ 45,584, and noncurrent liabilities in the 
amount of R$ 106,696 and R$ 93,292, as of December 31, 2010 and 2009, respectively. 

(iv) Program contracts  

It refers to the renew of contracts formerly denominated full concession to operation concession, by program contracts 
which purpose is the water supply, sewage and sanitation public service, where the Company has the control of the assets 
acquired or constructed during the contract period (30 years) or for the useful lives of the underlying assets, which 
was lower.   

(v) New businesses 

In August 2009, the Company and Companhia de Saneamento de Alagoas – CASAL signed 60 month-period agreement to 
provide specialized technical services to implement a program to reduce the losses and retain revenues in the municipality 
of Maceio. The construction started in 2010. 

As of December 31, 2010 the total amount was R$ 11,228. 

(a)         Disposals of concession intangible assets 

In 2010, 2009 and 2008, the Company wrote off concession intangible assets items totaling R$ 15,857, R$ 51,778 and R$ 
176,340, respectively, due to obsolescence, theft, misplacements, unproductive wells and projects considered economically 
unfeasible. 

(b)         Capitalization of interest and financial charges 

The capitalization occurs during the construction period of the assets, considering the average interest rate of the loans in 
place in the date of the capitalization. 

The Company analyzes the loans and financing acquired in foreign currency and considers if such loans and financing were 
obtained in local currency, establishing a limit to capitalize interest and exchange rate variation by the amount that were 
capitalized if such loans and financing were acquired in local currency. 

In 2010, 2009 and 2008, the Company capitalized interest and inflation adjustment, including related foreign currency 
exchange effects, in concession intangible assets during the construction period of the qualifying assets totaling R$ 228,899, 
R$ 51,625 and R$ 219,430, respectively. 

(c)         Revenue from construction 

The Company is responsible to construct and install the infrastructure related to the concession contract, using its own 
resources or contracting third parties to perform the work, being exposed to its risks and benefits. 

F-47 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The Company recognizes revenue from construction related to construction costs added by gross margin. In general, the 
constructions regarding the concessions are performed by third parties. In this case the margin is lower and it is to cover the 
costs of management and supervision of the construction. Based on the studies and the benchmark with companies in the 
construction market the margin used in 2010 was 2.6%. 

The amount, net of amortization, in December 31, 2010 was 33,485 (R$ 28,828 in 2009).  

 (d)        Expropriations 

As a result of the construction of priority projects related to water and sewage systems, the Company was required to 
expropriate or establish rights of way in third-parties' properties, and the owners of these properties will be compensated 
either amicably or through courts. 

The assets received as a result of expropriations are recorded as concession intangible assets after the transaction is completed. 
In 2010, 2009 and 2008, the amount related to expropriations was R$ 10,779, R$ 6,244 and R$ 11,004, respectively. 

(e)         Assets pledged as guarantee 

As of December 31, 2010 and 2009, the Company had underlying physical assets totaling R$ 249,034 offered as guarantee to 
the request for the PAES (tax debt refinancing program) (Note 13). 

(f)          Public-Private-Partnership (PPP) 

The Company and CAB-Sistema Produtor Alto Tiete S.A., special purpose entity, formed by Galvão Engenharia S.A. and 
Companhia Águas do Brasil – Cab Ambiental, signed in June 2008 the contract of public-private-partnership of Alto Tiete 
production system. 

The contract last 15 years which purpose is expand the capacity of treated water of Taiaçupeba from 10 thousand to 15 
thousand of liters per second. 

As of December 31, 2010 and 2009 the amount recognized as intangible asset related to PPP was R$ 353,468 and R$ 150,281, 
respectively. 

F-48 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

11            Property, Plant and Equipment 

Land 
Buildings 
Equipment 
Transportation equipment 
Furniture, fixtures and equipment 
Construction in progress 
Other 

December 31, 2010   

December 31, 2009

    Accumulated  
Cost   depreciation  

119,567  
41,014  
162,270  
20,025  
26,831  
43,222  
2,590  

-  
(28,983)  
(90,804)  
(18,364)  
(26,378)  
-  
(1,384)  

Net   

119,567   
12,031   
71,466   
1,661   
453   
43,222   
1,206   

     Accumulated  
Cost    depreciation  

119,885   
41,224   
121,019   
18,194   
25,752   
-   
2,590   

-  
(25,669)  
(75,469)  
(16,690)  
(19,398)  
-  
(1,008)  

Net

119,885
15,555
45,550
1,504
6,354
-
1,582

415,519  

(165,913)   249,606    328,664   

(138,234)  

190,430

Movements on the property, plant and equipment are as follows: 

Land 
Buildings 
Equipment 
Transportation equipment 
Furniture, fixtures and equipment 
Other 

Land 
Buildings 
Equipment 
Transportation equipment 
Furniture, fixtures and equipment 
Other 

Land 
Buildings 
Equipment 
Transportation equipment 
Furniture, fixtures and equipment 
Construction in progress 
Other 

January  
1, 2008  

103,209  
14,746  
43,602  
465  
3,972  
1,116  

    Write-off and  

Additions  

Disposals   Depreciation  

December 

31, 2008

3,018  
3,228  
8,702  
1,349  
7,845  
158  

-  
-  
(66)  
-  
(33)  
-  

(99)  

-  
(1,230)  
(4,478)  
(642)  
(5,450)  
(101)  

(11,901)  

106,227

16,744

47,760

1,172

6,334

1,173

179,410

167,110  

24,300  

December  
31, 2008  

    Write-off and  

Additions  

Disposals   Depreciation  

December 

31, 2009

106,227  
16,744  
47,760  
1,172  
6,334  
1,173  

14,193  
172  
4,870  
1,262  
6,756  
564  

(535)  
(20)  
(29)  
-  
(167)  
(4)  

-  
(1,341)  
(7,051)  
(930)  
(6,569)  
(151)  

119,885

15,555

45,550

1,504

6,354

1,582

179,410  

27,817  

(755)  

(16,042)  

190,430

December  
31, 2009  

    Write-off and  

Additions  

Disposals   Depreciation  

December 

31, 2010

119,885  
15,555  
45,550  
1,504  
6,354  
-  
1,582  

-  
-  
41,251  
1,831  
1,079  
43,222  
-  

(318)  
(210)  
-  
-  
-  
-  
-  

-  
(3,314)  
(15,335)  
(1,674)  
(6,980)  
-  
(376)  

119,567

12,031

71,466

1,661

453

43,222

1,206

  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
    
   
 
  
    
 
  
   
   
   
    
    
   
 
   
   
   
    
    
   
 
  
  
   
  
   
   
   
   
   
 
   
  
  
   
   
   
 
  
  
   
  
   
   
   
   
   
 
   
   
   
   
   
 
  
  
  
   
  
   
   
   
   
   
 
190,430  

87,383  

(528)  

(27,679)  

249,606

F-49 

  
  
   
   
   
   
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(a)         Depreciation 

The Company revises the estimated useful lives of its property, plant and equipment annually. In 2009, the Company adjusted 
the estimated useful lives of its property, plant and equipment, which were accounted for prospectively from January 1, 2009. 
The annual depreciation rates were as follows: 

Property, plant and equipment 

Buildings 
Equipment 
Transportation equipment 
Furniture, fixtures and equipment 

2010  

2009  

2%  
5%  
10%  
6.7%  

2%  
5%  
10%  
6.7%  

2008

4%

10%

20%

10%

F-50 

  
  
  
  
  
  
  
  
   
  
  
 
   
 
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

12           Loans and Financing 

Denominated in local currency 
       Federal Government/Banco do Brasil 
       6th issue debentures 
       7th issue debentures 
       8th issue debentures 
       9th issue debentures 
       10th issue debentures 
      11th issue debentures 
      12th issue debentures 
       Caixa Econômica Federal 
       Promissory notes 
       FIDC - SABESP I 
       National Bank for Economic and Social Development (BNDES) 
       National Bank for Economic and Social Development (BNDES) - 
Baixada Santista 
       National Bank for Economic and Social Development - BNDES PAC 
       National Bank for Economic and Social Development - BNDES Onda 
Limpa 
      Foz do Brasil – Mutual 
      Santander 
       Other 
       Interest and charges  

December 31, 2010  

December 31, 2009

Current   Noncurrent  

Total  

Current   Noncurrent  

Total

316,541  
-  
-  
465,086  
33,333  
-  
-  
-  
91,031  
-  
13,889  
43,403  
-  
1,649  
-  
-  
2,427  
2,816  
141,991  

818,359  
-  
-  
-  
198,242  
279,497  
1,205,451  
499,715  
783,426  
599,755  
-  
40,518  
130,474  
44,352  
246,986  
52,896  
-  
3,850  
-  

1,134,900  
-  
-  
465,086  
231,575  
279,497  
1,205,451  
499,715  
874,457  
599,755  
13,889  
83,921  
130,474  
46,001  
246,986  
52,896  
2,427  
6,666  
141,991  

288,833  
225,380  
121,165  
-  
-  
-  
-  
-  
78,871  
-  
55,556  
42,857  
-  
-  
-  
-  
-  
3,276  
112,297  

1,127,136  
-  
-  
417,862  
223,741  
274,476  
-  
-  
679,992  
898,447  
13,889  
83,940  
130,473  
14,602  
-  
-  
-  
11,575  
7,961  

1,415,969

225,380

121,165

417,862

223,741

274,476
-

-

758,863

898,447

69,445

126,797

130,473

14,602
-

-

-

14,851

120,258

Total denominated in local currency 

1,112,166  

4,903,521  

6,015,687  

928,235  

3,884,094  

4,812,329

Denominated in foreign currency 
       Inter-American Development Bank (IADB) US344,898,000 (2009 - 
US$ 374,647,000) 
       Eurobonds - US$ 140,000,000 (2009 - US$ 140,000,000) 
      Eurobonds - US$ 350,000,000 
       JBIC - ¥ 21,316,000,000 (2008 - ¥ 21,316,000,000) 
       IADB 1983AB - US$ 250,000,000 (2009 - US$ 250,000,000) 
       Interest and charges 

63,185  
-  
-  
11,810  
39,893  
15,089  

511,484  
232,612  
576,107  
425,168  
373,575  
5  

574,669  
232,612  
576,107  
436,978  
413,468  
15,094  

64,250  
-  
-  
-  
-  
17,462  

588,085  
243,001  
-  
400,932  
431,911  
-  

652,335

243,001
-

400,932

431,911

17,462

Total denominated in foreign currency 

129,977  

2,118,951  

2,248,928  

81,712  

1,663,929  

1,745,641

Total loans and financing 

1,242,143  

7,022,472  

8,264,615  

1,009,947  

5,548,023  

6,557,970

F-51 

  
  
  
  
  
  
  
  
  
   
   
   
   
   
   
   
   
 
  
   
   
   
   
   
   
 
   
   
   
   
   
 
   
   
   
   
   
   
 
   
   
   
   
   
   
 
   
   
   
   
   
 
   
   
   
   
   
   
 
   
   
   
   
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Currency 

Guarantees 

Maturity

Annual interest rates 

   Inflation and 
foreign 
exchange  
adjustment  

Real 
Real 
Real 
Real 
Real 
Real 

Financial institution 
       Local currency 
              Federal 
Government/Banco do Brasil 
              8th issue debentures 
              9th issue debentures 
              10th issue debentures 
              11th issue debentures 
              12th issue debentures 
              Caixa Econômica Federal  Real 
Real 
              Promissory notes 
Real 
              FIDC - SABESP I 
              National Bank for 
Economic and Social Development 
(BNDES) 
              National Bank for 
Economic and Social Development 
(BNDES) - Coastal region 
              National Bank for 
Economic and Social  
Development - BNDES PAC 
              National Bank for 
Economic and Social  
Development - BNDES ONDA 
LIMPA 
           Foz do Brasil - Mutual  
           Santander 
              Other 

Real 
Real 
Real 
Real 

Real 

Real 

Real 

       Foreign currency 
              Inter-American 
Development Bank (IADB)  
US$ 344,898,000 (2009 - 
US$ 374,647,000) 
           International Bank for 
Reconstruction and Development - 
BIRD 
              Eurobonds - 
US$ 140,000,000 (2009 - 
US$ 140,000,000) 
              Eurobonds - 
US$ 350,000,000  
              JBIC - ¥ 21,316,000,000 
(2009 - ¥ 21,316,000,000) 
              IADB 1983AB - 
US$ 250,000,000 (2009 - 
US$ 250,000,000) 

U.S. dollar 

U.S. dollar 

U.S. dollar 
U.S. dollar 
Yen 

U.S. dollar 

   São Paulo State Government and 
Own funds 
   Own funds 
   Own funds 
   Own funds 
   Own funds 
   Own funds 
   Own funds 
   Own funds 
   Own funds 

2014   8.50% 
2011   10.75% 
2015   CDI+2.75% and 12.87% 
2020   TJLP + 1.92% (1st & 3rd series) & 
9.53% (2nd series) 
2015   DI + 1.95% & DI + 1.4% (2nd 
series) 
2025   TR + 9.5% 
2011/2032   5% to 9.5% 
2011   CDI + 0.65% 
2011   CDI + 0.70% 

   UPR 
   IGP-M 
   IPCA 
   IPCA 

   UPR 

Own funds 

Own funds 

Own funds 

Own funds 

   - 
   - 
   - 

2013

3% + TJLP 6% LIMIT 

2019

2.5% + TJLP 6% LIMIT 

2023

2.15% + TJLP 6% LIMIT 

1.92% + TJLP 6% LIMIT 

2025
2012   CDI + 1.75% + IOF 
2011   CDI 

2011/2018   12%/CDI/TJLP + 6% 

Federal Government 

2016/2025

3.00% to 3.52% 

Federal Government 

2034

0.43% 

- 
   - 
   Federal Government 

- 

2016

7.50% 
2020   6.30% 
2029   1.8% and 2.5% 

2023

2.49% to 2.99% 

   Currency 
Basket Fluctuation 
+ US$ 

US$ 

US$ 
   US$ 
   Yen 

US$ 

Exchange rate as of December 31, 2010: US$ 1.6662; Yen 0.0205 - (December 31, 2009 - US$ 1.7412; Yen 0.018809). 

F-52 

  
  
  
  
  
  
  
  
  
  
  
     
  
      
     
  
     
  
      
     
  
  
  
  
  
     
  
     
  
  
     
  
     
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
     
  
     
  
     
   
  
     
  
      
     
  
     
  
      
     
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(a)         Banco do Brasil 

In March 1994, the Company refinanced the existing loan agreements with Caixa Econômica Federal, which assigned loans 
rights represented by receivables to the Federal Government, with Banco do Brasil acting as financial agent. Under the 
agreement entered into with the Federal Government, payments are made based on the Price amortization system, monthly 
indexed by the Standard Reference Unit (UPR), which is equal to the Government's benchmark Interest Rate (TR), plus 
interest of 8.5% per year. The interest and principal amount are monthly paid with final maturity in 2014. This financing is 
guaranteed by the São Paulo State Government by a pledge of its own revenues and revenues of the Company. 

(b)         Debentures 

(i)          6th issue 

On September 17, 2004, the Company registered with the Brazilian Securities Exchange Commission (Comissão de Valores 
Mobiliários or CVM) a securities program totaling R$ 1,500,000. As part of this program, the Company issued on September 1, 
2004, 600,000 debentures in three series, without renegotiation, with a face value of R$ 1 each, totaling R$ 600,000. The date 
for the financial settlement of the transaction was September 21, 2004 for the Series 1 and September 22, 2004 for the Series 2 
and 3. 

The debentures were placed on the market as follows: 

Series 1 
Series 2 
Series 3 

Number   Adjustment 

231,813   - 
188,267   IGP-M 
179,920   IGP-M 

   Interest  
   CDI+1.75% p.a. 
   11% p.a. 
   11% p.a. 

Interest 
payment 
   Semiannual 
   Annual 
   Annual 

   Repayment 
   Single installment 
   Single installment 
   Single installment 

   Maturity 
   September 2007 
   September 2009 
   September 2010 

Interest expense totaled R$ 17,296 and R$ 26,999, in 2009 and 2008, respectively, related to the series 2, and R$ 24,424 and 
R$ 18,479 in 2009 and 2010, respectively, related to the series 3. 

Series 1 of the 6th issue of debentures was fully repaid on September 30, 2007. Series 2 and 3 of the 6th issue of debentures was 
fully repaid on September 1, 2009 and on September 1, 2010, respectively. 

(ii)        7th issue 

As part of the program registered with the CVM on September 17, 2004, the Company issued 300,000 debentures in three 
series on March 1, 2005, without renegotiation, with a face value of R$ 1 each, totaling R$ 300,000. The date of financial 
settlement of the operation was March 14, 2005. 

The debentures were placed on the market as follows: 

Series 1 
Series 2 

Number   Adjustment 
200,000   - 
100,000   IGP-M 

   Interest  
   CDI+1.5% p.a.  
   10.80% p.a. 

Interest 
payment 
   Semiannual 
   Annual 

   Repayment 
   Single installment 
   Single installment 

   Maturity 
   March 2009 
   March 2010 

F-53 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

In 2009 and 2008, interest expense related to series 1 totaled R$ 4,611 and R$ 27,171, respectively, and in 2010 and 2009 the 
interest expense related to series 2 totaled R$ 2,349 and R$ 13,015, respectively. 

Series 1 and 2 of the 7th issue of debentures was fully repaid on March 1, 2009 and March 1, 2010, respectively. 

(iii)       8th issue 

To terminate the program registered with the CVM on September 17, 2004, the Company issued on June 1, 2005, 700,000 
debentures, using the option to increase the number of debentures allowed by up to 20%, distributed in two series, without 
renegotiation, with the face value of R$ 1 each, totaling R$ 700,000. The date for the financial settlement of the operation was 
June 24, 2005. Proceeds were used in the settlement of Eurobonds agreement. 

The debentures were placed on the market as follows: 

Series 1 
Series 2 

Number   Adjustment 
350,000   - 
350,000   IGP-M 

   Interest  
   CDI+1.5% p.a.  
   10.75% p.a. 

Interest 
payment 
   Semiannual 
   Annual 

   Repayment 
   Single installment 
   Single installment 

   Maturity 
   June 2009 
   June 2011 

Interest expense totalled R$ 18.520 and R$ 47.580 in 2009 and 2008, respectively, related to séries 1 and R$ 49.863 and R$ 
44.441 in 2010 and 2009, respectively, related to series 2. 

Series 1 of the 8th issue of debentures was fully repaid on June 1, 2009. 

(iv)        9th issue 

On October 23, 2008, the Company registered with the CVM a securities program for a total amount of R$ 3 billion and made 
a Public Offering of Simple Debentures, unsecured and non-convertible, of the 9th issue, in the context of the said program.  

The debentures were placed on the market as follows: 

Series 1 

Series 2 

Number   Adjustment 
100,000   - 
100,000   IPCA 

   Interest  
   CDI+2.75% p.a.  
   12.87% p.a. 

Interest 
payment 
   Semiannual 
   Annual 

   Repayment 
   Annually (from 

October 15, 2011) 

   Annually (from 

October 15, 2013) 

   Maturity 
   October 15, 2013 
   October 15, 2015 

Repayment  will  be  made  in  three  annual  and  consecutive  installments  of  the  same  amount,  the  first  of  which  falls  due  on 
October 15, 2011 for series 1 and October 15, 2013 for the series 2. 

Settlement date of series 1 was on November 7, 2008 and of series 2 on November 10, 2008. 

The funds arising from this issuance were used to refinance debts falling due. 

Interest expenses totaled R$ 12,354 and R$ 12,546 in 2010 and 2009, respectively related to series 1 and R$ 16,993 and R$ 
16,120, respectively, related to series 2. 

Financial covenants of the 6th, 7th, 8th, 9th, 11th and 12th issue of debentures: 

.     Adjusted current ratio (current assets divided by current liabilities, excluding from current liabilities the current portion of 

noncurrent debts incurred by the Company that are recorded in current liabilities) higher than 1.0. 

F-54 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

.     EBITDA to financial expenses ratio equal to or higher than 1.5. 

.     Noncompliance with these obligations will only be typified when verified in the quarterly financial statements for at least 

two consecutive quarters or two nonconsecutive quarters within a twelve-month period. 

In case of noncompliance with the covenants, the trustee should call an extraordinary debentureholers' meeting within 48 
hours from the acknowledgement of the noncompliance to resolve on the declaration of accelerated maturity of the 
debentures. 

(v)         10th issue 

On November 15, 2009, the Company launched 100 debentures, subscribed exclusively by the National Bank for Economic and 
Social Development (BNDES). These debentures were distributed in three nonconvertible series, at a nominal value of 
R$ 2,753.70, totaling R$ 275,370. This transactions was settled on December 15, 2009, for all series. 

The debentures were placed on the market as follows: 

Series 1 

Series 2 
Series 3 

Number   Adjustment 

28   - 

   Interest  
   TJLP + 1.92% p.a. 

30   IPCA 
42   - 

   9.53% p.a. 
   TJLP + 1.92% p.a. 

   Interest payment     Repayment 
   Monthly (from 
   Quarterly to 

December 2012) 

   Maturity 
   November 2020 

   Annual (from December 
2013) 
   Monthly (from 
December 2012) 

   December 2020 
   November 2020 

November 2012 
and monthly from 
then on 
   Annual 
   Quarterly to 

November 2012 
and monthly from 
then on 

The funds raised in this issuance will be used in expenditures in water supply and sewage systems in the following projects: 
Water Treatement Stations at Rio Grande, Litoral Norte, Vale do Paraíba and Mantiqueira, Bacia do Piracicaba-Capivari-
Jundiai; and for program of reduction of losses. 

In 2010 and 2009, interest expense related to 10th issue totaled R$ 6,016 and R$ 755, respectively, related to series 1; R$ 9,156 
and R$ 207, related to series 2 and , R$ 9,025 and R$ 1,132 related to series 3.  

Financial covenants 

.     EBITDA to Net revenue: equal or higher than 38%. 

.     EBITDA to Financial expenses ratio: equal to or higher than 2.35. 

.     Net debt to EBITDA: equal to or higher than 3.65. 

F-55 

  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(vi)        11th issue 

On March 1, 2010, the Company launched 1,215,000 in debentures. On April 30 and May 3, 2010 the Company settled series 1 
and 2, respectively, through a public offering, as summarized below:  

Series 1 
Series 2 

Number   Adjustment 
810,000   - 
405,000   - 

   Interest  
   DI + 1.40% p.a. 
   DI + 1.40% p.a. 

   Interest payment 
   Semiannual (September 
and March) 
   Semiannual (September 
and March) 

   Repayment 
   Annual (from March 
2013) 
   Annual (from March 
2012) 

   Maturity 
   March 2013 
   March 2013 

The interest expense related to the 11th issue was R$ 80,077 related to series 1 and R$38,103 related to series 2 in 2010. 

(vii)      12th issue 

The Company issued R$ 500 million in debentures to Government Severance Indemnity Fund for Employees (FGTS). The 
debentures will be invested in program of structures to comply with the goal to universalize the sanitation service in the State 
of São Paulo until 2018. Among the programs that will receive this investment are Vida Nova (water sources), Programa 
Metropolitano de Água (Water Metropolitan Program), Programa Metropolitano de Esgoto (Sewage Metropolitan Program), 
Programas de Àgua e Esgotos do Interior e Litoral (Water and Sewage Program inside the state and coastal region).  

Initially, R$170 million was released and R$ 330 million is invested in a restricted bank account and will be released in 2 
installments. The first installment will be released after 6 months and the second installment will be released after 12 months 
from the issuance date. The condition for releasing these installments is the execution of the investment in these projects by 
SABESP. 

One of the conditions for approving this transaction is the allocation of 60% of the investments in poor areas. 

The issuance of the debentures occurred on September 22, 2010 through a public offer under the Brazilian securities exchange 
commission rules, as follows: 

Unique Serie 

Number   Adjustment 
500,000   - 

   Interest  
   TR + 9.5% p.a. 

   Interest payment 
   Monthly (from July 

2010) 

   Repayment 
   Monthly (from July 
2014) 

   Maturity 
   June 2025 

The interest expense related to the 12th issue was R$ 26,879 in 2010. 

(c)         Caixa Econômica Federal - Pro-sanitation Program 

(i)          Water and sewage 

Several loan agreements were entered into from 1996 to 2004 under the Pro-Sanitation Program for expanding and improving 
the water supply and sewage systems of several municipalities of the State of São Paulo and of the City of São Paulo. Loans are 
collateralized by the collections of the daily billings of water supply and sewage services up to the total amount of the debt. 

Contractually established repayment terms range from 120 to 180 months, after the beginning of the repayment period. 

The balance of these facilities as of December 31, 2010 was R$ 607,638 (December 31, 2009 - R$ 637,611 and their unused 
amount was R$ 131,059. 

F-56 

  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The contractual charges are: 

Contract signed in 

Interest rate 

During grace period 
     Risk rate 

   1996 

   9.5% p.a. 

   1997 

   6.5% to 8.0% p.a. 

   1998 to 2004 

   6.5% to 8.0% p.a. 

   1.0% p.a. on amount disbursed 

   1.0% p.a. on amount disbursed 

     Management fee 

   0.12% p.m. on the contract amount     2.0% p.a. on amount disbursed 

   0.6% p.a. or 2% p.a. on outstanding 

debt balance 

   1.0% p.a. on amount disbursed  or 2% 
p.a. on debt balance   for contracts 
entered into in  2003 and 2004 

During repayment period 
     Management fee 

   Difference between 

installment calculation and a 10.5% 
p.a. rate less the 9.5% p.a. rate 

   1.0% on the debt balance 

   1.0% on the debt balance 

(ii)        Pró-Sanear Program 

In 1997, 1998 and 2008, contracts were signed under the Pró-Sanear Program for the improvement of water and sewage 
services, with the involvement of the communities receiving the services, in several municipalities of the Metropolitan Region 
of São Paulo. The credit facilities are collateralized by the collections of the daily billings of water supply and sewage services 
up to the total amount of the debt. Repayment will be made in 180 months after the beginning of the repayment period. As of 
December 31, 2010, the balance was R$ 16,752 (December 31, 2009 - R$ 18,978). 

The financial charges are: 

.     interest rate - 5.0% p.a.; 
.     management fee (grace period) - 2.0% p.a. on debt outstanding balance; 
.     management fee (repayment phase) - 1.0% p.a. on debt outstanding balance; 
.     risk rate (grace period) - 1.0% p.a. on amounts disbursed. 

(iii)       Growth Acceleration Program (PAC) 

In 2007 and 2008, the Company entered into agreements linked to the Universal Water and Sewage Services were entered 
with several municipalities, with funds from the Government Severance Indemnity Fund for Employees (FGTS). The credits 
facilities are guaranteed by a monthly flow of the billings corresponding to the minimum of three times the monthly charge. 
Repayments will be made in 240 months after the beginning of the repayment period. The balance as of December 31, 2010 
was R$ 250,067 (December 31, 2009 - R$ 102,274), and available facilities total R$ 1,012,258 (December 31, 2009 - 
1,175,460). 

The financial charges are: 

.     interest rate - 6% p.a.; 
.     management fee - 1.05% p.a. during the period of the contract; 
.     risk rate - 0.3% p.a. on the adjusted debt balances. 

F-57 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
     
     
     
   
     
     
     
     
     
     
  
  
     
     
     
     
     
     
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Covenants 

An Agreement for Performance Improvement sets targets for financial indicators (billing losses, revenue evasion, cash and 
cash equivalents and reduction of the number of days of committed receivables), and operating indicators that, based on the 
past two years, are annually projected for the following five years. 

Noncompliance with 4 of the 8 covenant clauses will accelerate the maturity of the contract. 

(d)         BNDES 

Contract 01.2.619.3.1 - Entered into in August 2002, totaling up to R$ 60,000, for the purpose of financing part of the 
Company's contribution to the Tietê River Pollution Abatement Project - Stage II, related to loan agreement 1212/OC - BR with 
the Inter-American Development Bank (IADB). The related project is in progress and the outstanding balance as of December 
31, 2010 was R$ 20,980 (December 31, 2009 - R$ 31,699). 

The related project is in performance of works stage and the debt balance as of December 31, 2010 was R$ 62,941 (December 
31, 2009 - R$ 95,098). The funds are onlent from BNDES to the agents and from the latter to SABESP. The onlending 
agreement has the same purpose as the agreement between BNDES and SABESP, and the same interest and repayment terms, 
as follows: 

Interest - TJLP limited to 6% p.a., plus a 3% p.a. spread, paid quarterly during the grace period, and monthly in the repayment 
period. The TJLP portion exceeding 6% p.a. will be added to the debt outstanding balance. 

Repayment of borrowings was initiated in September 2005, with monthly payments, and conclusion scheduled for February 
2013. 

Loans are collateralized by part of revenues from the provision of water and sewage services. 

Covenants 

.     Adjusted current ratio: higher than 1.0. 
.     Ebitda/Net Operating Revenue: equal to or higher than 38%. 
.     Total connections (water and sewage)/own employees: equal to or higher than 520. 
.     EBITDA/Debt Service cost: equal to or higher than 1.5. 
.     Equity to Total Liabilities: equal to or higher than 0.8. 

Noncompliance with covenants will accelerate the maturity of the contract. 

The Company obtained from BNDES the suspension for 13 months of the compliance of covenants as from December 2010. 

(e)         BNDES Baixada Santista 

In November 2007, the Company entered into a financing agreement with BNDES for the Environmental Recovery Program of 
the Santos Metropolitan Region, totaling R$ 129,973 with interest of 2.5% p.a. plus TJLP limited to 6%. 

Repayment will be made in 96 monthly, consecutive installments, starting January 2012 to December 2019. 

A portion of the Company's revenue is pledged as guarantee for this financing. 

The agreement is in progress and the debt balance as of December 31, 2010 and 2009 was R$ 130,474. 

F-58 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(f)          Receivables Investment Funds (FIDC) 

On March 23, 2006, a single series of senior shares and 26 subordinated shares, held in a deposit account in the name of its 
holders, were issued with unit value on issue date corresponding to R$ 500. The senior shares are being repaid in 54 monthly 
installments, starting October 2006, and their final maturity is in March 2011. As of December 31, 2010, the balance of 
subordinated shares was R$ 22,270 (2009 - R$ 20,138), recorded in line account 'Other receivables' in noncurrent assets; the 
balance of senior shares was R$ 13,889 (2009 - R$ 69,445), recorded in 'Loans and financing'. Subordinated shares were 
subscribed and paid up exclusively by SABESP. The Fund yield benchmark corresponds to 100% of the DI rate (a managed 
prime rate), plus a fixed interest coupon of 0.70% per base year of 252 business days, pursuant to the terms of its regulations. 

The Fund is managed by Caixa Econômica Federal and its custodian and recording agent is Banco do Brasil S.A. 

The funds raised, totaling R$ 250 million, were used by the Company to settle debts in 2006. 

(g)         Eurobonds 

On November 3, 2006, the Company issued Eurobonds abroad (Eurobonds 2016) totaling US$ 140 million. The issue was led 
by Deutsche Bank Trust Company Americas and the principal agent was Deutsche Bank Luxembourg S.A. The interest rate is 
7.5% p.a., paid semiannually, and maturity is in November 2016.  

The funds raised were used for the early repayment and partial issue of US$ 225 million in the Eurobonds, with final maturity 
in June 2008, and the amount redeemed was US$ 126,948 thousand. 

As of December 31, 2010 the balance of the Eurobonds was R$ 232,612. 

Covenants - for Eurobonds 2016. 

Limit new debt so that: 

.     adjusted total debt to EBITDA does not exceed 3.65; 

.     the Company's debt service coverage ratio, determined on the date this debt was incurred, shall not be lower than 2.35. 

Noncompliance with covenants will accelerate the maturity of the contract. 

In December 2010, the Company issued a US$ 350 million senior unsecured notes due 2020 (the Eurobonds 2010). The issue 
was led by Banco Itaú Europa, S.A. and Santander Investment Securities Inc. The interest rate is 6.25% p.a., paid semi-
annually in arrears on June 16 and December 16, commencing on June 16, 2011. The funds were used for partial repayment of 
outstanding debts. 

As of December 31, 2010 the balance of the Eurobonds was R$576,107. 

(h)         Inter-American Development Bank (IADB) 

Loan Agreement 713 - In December 1992, the Company entered into a loan agreement with the IADB for US$ 400 million to 
finance the first stage of the Tietê River Pollution Abatement Project. The repayment period started in June 1999 in 
semiannual installments, subject to annual floating rate interest, varying according to the loans raised by the Bank in each six-
month period, and final maturity in December 2017. In December 1992, the Federal Republic of Brazil signed a guarantee 
contract with the IADB guaranteeing the funds for the fulfillment of the contractual obligations. The outstanding balance as of 
December 31, 2010 was US$ 174,060 thousand, equivalent to R$ 290,019 (December 31, 2009 - R$ 332,139). 

F-59 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Loan Agreement 896 - In December 1992, the Company entered into a loan agreement with the IADB for US$ 50 million to 
finance the first stage of the Tietê River Pollution Abatement Project. Semiannual repayments started in June 1999, with 
annual interest of 3% and final maturity in December 2016. In December 1992, the Federal Republic of Brazil signed a 
guarantee contract with the IADB guaranteeing the funds for the fulfillment of the contractual obligations. The outstanding 
balance as of December 31, 2010 was US$ 16,667 thousand, equivalent to R$ 27,770 (December 31, 2009 - R$ 33,856). 

Loan Agreement 1212 - In July 2000, the Company entered into a loan agreement with the IADB for US$ 200 million to 
finance the second stage of the Tietê River Pollution Abatement Project. In 2008, total disbursement for this agreement was 
US$ 2,434 thousand and there are no amounts to be disbursed. The loan is being amortized semiannually and final maturity in 
July 2025. Interest is being paid on a semiannual basis, based on daily balances, at an annual variable rate according to the 
costs of loans of the Bank in the preceding six-month period, plus a spread, and changes every six months. The debt balance as 
of December 31, 2010 was US$ 154,171 thousand, equivalent to R$ 256,880 (December 31, 2009 - R$ 286,340). 

Loan Agreement 2202/OC-BR – On September 3, 2010 the Company and the Inter-American Development Bank (Banco 
Interamericano de Desenvolvimento or BID) signed the contract for partially finance the third stage of the Tietê River Project, 
denominated the decontamination of the Tietê river. The total estimated cost of this investment is US$800 million, of which 
US$ 600 million will be financed by the BID and US$ 200 million will be invested by the Company´s  own resources. The final 
maturity of the loan is in 25 years and the repayment period commences in September 2016.The interest is based on USD-
Libor. 

Covenants 

.     Loan agreements 713, 896 and 1212 - Tariffs must: (a) produce revenues sufficient to cover the system's operating expenses, 
including administrative, operating, maintenance, and depreciation expenses; (b) provide a return on property, plant, and 
equipment no less than 7%; and (c) during project execution, the balances of short-term loans must not exceed 8.5% of total 
equity. 

Noncompliance with covenants will accelerate the maturity of the contract. 

(i)          Japan Bank for International Cooperation ("JBIC") 

On August 6, 2004, the Company entered into a financing agreement with the JBIC - Japan Bank for International 
Cooperation, guaranteed by the Federal Government, totaling ¥21,320 million, equivalent to approximately R$ 337,687, for 
the Environmental Recovery Program of the Santos Metropolitan Region. Total financing period is 25 years, with a seven-year 
grace period and 18 years of repayment in semi-annual installments. Interest is being paid on a semiannual basis since 2006, 
and is 2.5% p.a. for the sewage network and 1.8% p.a. for sewage treatment facilities. The balance of this loan agreement as of 
December 31, 2010 was R$ 436,978 (December 31, 2009 - R$ 400,932). 

(j)          AB Loan (IADB 1983AB) 

On May 27, 2008, the Company entered into a loan agreement AB loan with IADB, totaling US$ 250.0 million, which was fully 
disbursed in June 2008. The funds obtained were used to settle Eurobonds 2008 and to partly perform the Company's 
investment plan. 

The characteristics of this loan agreement are as follows: 

F-60 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

1983 A 
1983 B1 
1983 B2 

US$   Repayment from 

100.0 million   May 2011 
100.0 million   May 2011 
50.0 million   May 2011 

   Maturity 
   May 2023 
   May 2020 
   May 2018 

Interest  
(LIBOR + spread) 

   Libor + 2.99% 
   Libor + 2.69% 
   Libor + 2.49% 

Interest is being paid on a semiannual basis since November 2008. The balance of this loan agreement as of December 31, 
2010 was US$ 250.0 million, equivalent to R$ 413,468  (2009 - R$ 431,911), less part of the borrowing costs, totaling 
R$ 3,080 (2009 - R$ 3,390), which will be repaid over the agreement term. 

(k)         Promissory notes 

On May 3, 2010, the Company fully paid the 4th issue of promissory notes. 

On August 30, 2010 a R$600,000 Promissory Notes was issued as a bridge loan, related to an advance to the 13th issue of 
debentures. The net proceeds obtained from the 13th issuance of debentures will be fully used to redeem the 60 promissory 
notes of the 5th issuance of debenture. 

The amount obtained from the 13th issue of debentures will be fully used to repay the 60 promissory notes of the 5th issue of 
the Company. As of December 31, 2010, the balance of the promissory notes was R$ 600,000. 

(l)          International Bank for Reconstruction and Development - BIRD 

On October 28, 2009, the Company and “The World Bank” – Banco Internacional para Reconstrução do Desenvolvimento 
(BIRD) signed a contract (the BIRD agreement 7662BR) amounting to US$ 100,000. In December 31, 2010, the amount was 
not available to the Company. 

(l)          Covenants 

As of December 31, 2010 and 2009 and January 1, 2008, the Company had met all the requirements set forth by its loan and 
financing agreements. 

The Company obtained from BNDES the suspension for 13 months of the compliance of covenants as from December 2010. 

(m)       Maturities of loans and financing 

The following table provides the maturities of loans and financing as of December 31, 2010: 

In local currency 
In foreign currency 

Total 

2011  
1,112,166  
129,977  

2012  
1,406,600  
126,378  

2013  
1,103,131  
126,373  

2014  
573,096  
126,373  

2015  
474,969  
126,373  

2016  
161,606  
358,985  

2017 and 
thereafter  
1,184,119  
6,015,687
1,254,469   2,248,928

Total

1,242,143  

1,532,978  

1,229,504  

699,469  

601,342  

520,591   2,438,588  

8,264,615

F-61 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
   
   
   
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

13           Other Taxes Payable 

COFINS and PASEP 
PAES (tax debt refinancing program) 
INSS (Social Security contribution) 
Other 

Total 

Current  

Noncurrent

December 31, 2010  December 31, 2009  December 31, 2010  December 31, 2009

48,149  
35,364  
24,112  
50,425  

51,077  
34,012  
23,708  
21,433  

158,050  

130,230  

-  
53,045  
-  
-  

53,045  

-

85,029

-

-

85,029

The  Company  applied  for  enrollment  in  PAES  on  July  15,  2003,  in  accordance  with  Law  No 10684  of  May  30,  2003,  and 
included  in  its  application  the  debts  related  to  COFINS  and  PASEP  which  were  involved  in  a  legal  action  challenging 
application  of  Law  9718/98,  and  the  outstanding  balance  under  the  Tax  Recovery  Program  (REFIS).  The  original  amount 
included in PAES in July 2003 was R$ 316,953, as follows. 

Tax 

COFINS 
PASEP 
REFIS 

Total 

Principal  

Fine  

Interest  

Total

132,499  
5,001  
112,639  

250,139  

13,250  
509  
-  

13,759  

50,994  
2,061  
-  

53,055  

196,743
7,571
112,639

316,953

The loan is being paid in 120 months. The amounts paid in 2010, 2009 and 2008 were R$ 34,744, R$ 33,386 and R$ 34,114, 
respectively, and financial expenses of R$ 4,112, R$ 5,585 and R$ 8,281, respectively, were recorded. The outstanding balance 
as of December 31, 2010 was R$ 88,409. The assets offered as guarantee in REFIS, totaling R$ 249,034, are still guaranteeing 
the amounts in the PAES program. 

F-62 

  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
   
   
   
 
  
   
   
   
   
 
   
   
   
   
 
  
   
  
   
   
   
 
  
  
  
   
  
   
   
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

14           Deferred Income Taxes 

Breakdown of deferred taxes 

Deferred income tax assets (i) 
Provisions 
Pension obligations – G1 
Accounts receivable from related party – G0 
Donations of underlying assets on concession agreements 
Other 

Total deferred tax assets 

Deferred income tax liabilities 
Temporary differences of concession intangible assets 
Capitalization of borrowing costs 
Revenue - government entities 
Other 

Total deferred tax liabilities 

Deferred tax asset (liability) in the balance sheet 

December 
31, 2010  

December 
31, 2009

539,394  
162,552  
85,271  
38,213  
179,356  

541,511
177,736
85,271
35,334
87,077

1,004,786  

926,929

(711,283)  
(102,339)  
(72,968)  
(39,756)  

(721,620)
(66,507)
(73,005)
(22,161)

(926,346)  

(883,293)

78,440  

43,636

(i) The expectation of the Company’s management is to realize the deferred income tax assets in 2012 in the same portion of 
2011, and the residual amount to be realized in 2013. 

Deferred income tax assets (i) 
To be realized within 1 year 
To be realized after 1 year 
Total  

Deferred income tax liabilities (i) 
To be realized within 1 year 
To be realized after 1 year 
Total  

Net deferred income taxes assets and liabilities 

December 31, 2010  December 31, 2009

281,164  
723,622  
1,004,786  

(13,663)

(912,683)

(926,346)

78,440  

258,551

668.378

926,929

(37,912)

(845,381)

(883,293)

43,636

If occur any relevant fact that modify the expectation, the management will review such projections during the year. 

The movements in deferred income tax assets and liabilities in 2010, 2009 and 2008 are as follows: 

F-63 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
 
   
 
   
   
 
   
   
 
   
 
   
   
 
  
   
 
  
   
 
 
 
 
 
 
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Deferred income tax assets 

As of January 1, 2008 
Credited (charged) to income statement 

Provisions   

Pension 
obligations  

Accounts 
receivable 
from 
related 
party  

Concession 
intangible 
assets  

Other  

Total

334,489  
76,986  

138,681  
18,577  

-  
85,271  

28,989  
5,258  

11,574  
45,705  

513,733

231,797

As of December 31, 2008 

411,475  

157,258  

85,271  

34,247  

57,279  

745,530

Credited (charged) to income statement 

130,036  

20,478  

-  

1,087  

29,798  

181,399

As of December 31, 2009 

541,511  

177,736  

85,271  

35,334  

87,077  

926,929

Credit (changed) to income statement 

(2,117)  

(15,184)  

-  

2,879  

92,279  

77,857

As of December 31, 2010 

539,394  

162,552  

85,271  

38,213  

179,356  

1,004,786

Deferred income tax liabilities 

As of January 1, 2008 
Credited (charged) to income statement 

As of December 31, 2008 

Temporary 
differences 
 of 
concession 
intangible 
assets  

(787,666)  
28,944  

(758,722)  

Capitalization 
of borrowing 

costs  

Revenue -
government 
entities  

Other  

(5,142)  
(9,763)  

Total

(879,295)

31,298

(86,487)  
12,117  

(74,370)  

(14,905)  

(847,997)

-

-

-

Credited (charged) to income statement 

37,102  

(66,507)  

1,365  

(7,256)  

(35,296)

As of December 31, 2009 

(721,620)  

(66,507)  

(73,005)  

(22,161)  

(883,293)

Credit (changed) to income statement 

10,337  

(35,832)  

37  

(17,595)  

(43,053)

As of December 31, 2010 

(711,283)  

(102,339)  

(72,968)  

(39,756)  

(926,346)

Reconciliation of the effective tax rate 

The amounts recorded as income and social contribution tax expenses in the financial statements are reconciled to the 
statutory rates, as shown below: 

Profit before income taxes 
Statutory rate 

Estimated expenses at statutory rate 
Tax benefits from interest on shareholders' equity 
Permanent differences 
      Donations 
      Other differences 

2010  

2009  

2008

2,292,756  
34%  

(779,537)

131,658  

(2,820)

(11,610)

2,110,352  
34%  

(717,520)  
134,013  

2,020  
(21,118)  

1,148,224

34%

(390,396)

100,704

5,790

(1,376)

  
  
  
  
  
  
  
  
  
  
  
 
   
   
   
   
   
   
 
  
   
   
   
   
   
 
  
   
   
   
   
   
 
   
  
  
   
   
   
   
 
  
   
   
   
   
   
 
  
   
   
   
   
   
 
 
   
   
 
 
   
   
 
 
 
  
   
 
 
   
   
 
 
  
   
 
 
   
   
 
   
  
  
 
 
   
   
 
  
   
   
   
   
 
  
   
   
   
   
 
  
   
 
 
   
 
   
 
 
   
 
 
 
 
   
 
 
 
Income tax and social contribution 

Current income tax and social contribution 
Deferred income tax and social contribution 
Effective rate 

Transition Tax Regime (RTT) 

(662,309)  

(602,605)  

(285,278)

(697,115)

34,806 

28.9% 

(748,708)  
146,103   
28.6%   

(548,373)

263,095 

24.8% 

The Company opted to adopt the Transition Tax Regime (RTT), established by Provisional Measure 449/08, converted into 
Law No. 11,941/2009. Accordingly, the effects from the changes in Law 11,638/07 and from articles 36 and 37 of the said 
Provisional Measure had no effects for tax purposes. 

F-64 

  
  
   
 
 
   
 
   
 
 
   
 
 
 
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Due to the adoption of this regime, the Company maintained the tax incentives arising from donations and government´s 
investment subsidy and the tax deductibility for debt issuance cost on loans and financing. 

15           Provisions 

(a)         Lawsuits with probable likelihood of loss 

The Company is party to a number of claims and legal proceedings arising in the normal course of business, including civil, tax, 
labor and environmental matters. Management, based on a jointly analysis with its legal advisors, recognized provisions at an 
amount considered sufficient to cover probable losses. These provisions, net of escrow deposits based on the legal right to 
offset, are as follows: 

Customer claims (i) 
Supplier claims (ii) 
Other civil claims (iii) 
Tax claims (iv) 
Labor claims (v) 
Environmental claims (vi) 

Total 

Current 
Noncurrent 

Changes to the provisions for the year ended December 31, 2010 are shown below: 

December  
31, 2009  

Additions  

December 31, 
2010  

December 31, 
2009

659,182  
372,035  
167,628  
58,658  
137,232  
65,095  

783,561

341,478

155,030

28,757

101,463
58,531

1,459,830  

1,468,820

766,603  
693,227  

643,863

824,957

Interest 
and  

Payments  
and   

reversals   adjustment  

Inflation   December
31, 2010

Customer claims 
Supplier claims 
Other civil claims 
Tax claims 
Labor claims 
Environmental claims 

Subtotal 
Escrow deposits 

Total 

864,938  
342,053  
161,856  
28,812  
101,463  
58,531  

142,202  
6,485  
30,193  
29,541  
37,444  
11,847  

(206,533)  
(7,847)  
(23,716)  
(10,019)  
(13,892)  
(17,270)  

1,557,653  
(88,833)  

257,712  
(29,976)  

(279,277)  
9,872  

(30,402)  
32,198  
7,599  
10,324  
12,217  
11,987  

43,923  
(11,244)  

770,205
372,889
175,932
58,658
137,232
65,095

1,580,011
(120,181)

1,468,820  

227,736  

(269,405)  

32,679  

1,459,830

The total amount paid during the year related to judicial lawsuit was R$ 330,256 (R$ 240,032 - December 31, 2009). 

(b)         Lawsuits with possible likelihood of loss 

The lawsuits in course in administrative and judicial levels where the Company is the defendant considered by management 
and its legal advisors and consultants of possible likelihood of loss, not being, for this reason, provisioned in the financial 
statements, are as follows: 

F-65 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
   
 
  
   
 
  
   
   
 
  
   
  
  
   
   
   
   
 
  
   
   
   
   
 
  
   
   
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Customer claims (i) 
Supplier claims (ii) 
Other civil claims (iii) 
Tax claims (iv) 
Labor claims (v)  
Environmental claims (vi) 

Total 

(i)          Customer claims 

December 31, 
2010  

December 31, 
2009

827,500  
606,600  
275,200  
348,900  
127,800  
111,900  

760,100
501,500
262,900
280,700
100,300
44,300

2,297,900  

1,949,800

Approximately 1,440 lawsuits were filed by commercial customers, which claim that their tariffs should be equal to the tariffs 
of another consumer category, and therefore claim the refund of the amounts collected by SABESP. The Company was granted 
both favorable and unfavorable final decisions at several courts, and recognized a provision when the likelihood of loss is 
considered probable. The change of R$ 124.4 million in the lawsuits classified as probable loss (see item “a” above) arose from 
the change in the likelihood of ongoing lawsuits, interest, fees and adjustments. 

(ii)        Supplier claims 

Suppliers' claims include claims filed by some construction companies alleging an underpayment of monetary adjustments, 
withholding of amounts related to the understatement of official inflation rates after the Real economic plan, and the economic 
and financial imbalance of the agreements. These lawsuits are in progress at different courts and a provision is recognized 
when the likelihood of loss is considered probable. In 2010, the R$ 30.6 million and R$ 105.1 million increase in lawsuits 
whose likelihood of loss is considered probable and possible, respectively, is related to the change in the likelihood of the 
lawsuits, interest, fees and inclusion of monetary restatement in 2010. 

(iii)       Other civil claims 

The Company is a party to several civil lawsuits related to indemnities for property damage, pain and suffering, and loss of 
profits allegedly caused to third parties. As of December 31, 2010, total accrued amount of R$ 167.7 million (December 31, 
2009 - R$ 155.0 million) refers to claims with a loss likelihood considered probable. There was an increase both in lawsuits 
with probable and possible risk of loss, arising from the increase in lawsuits and the review of the expected outcomes, 
comprising monetary adjustment, interest and fees for the year. 

(iv)        Tax claims 

The provision for tax contingencies refers mainly to issues related to tax collections challenged due to differences in the 
interpretation of legislation by the Company's legal advisors. 

(a)          In 2006, the Federal Revenue Service, by means of a tax execution, audited the Company's compliance with the tax 
obligations related to income tax and social contribution for calendar year 2001, and recognized taxes payable in the 
amount of R$ 357.7 million, adjusted through December 31, 2010. The Company filed a timely objection and will 
appeal against the tax assessment at administrative level and in courts. According to its legal advisors, the likelihood of 
loss of this administrative proceeding is approximately 90% considered remote and 10% possible. 

(b)          The company filed for a preliminary injunction to challenge the revocation of the tax on service  revenue exemption 

granted by the Municipality of São Paulo, under a City Law enacted in 2002. In April 2003, the exemption was granted 
and the tax payment was suspended by an injunction. In May 2005, the courts issued a decision overruling the 
injunction. In July 2005, SABESP filed an appeal to ensure the preliminary injunction granted remained in effect. 
There is no final decision on the lawsuit yet. 

F-66 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Concurrently, on September 18, 2006, the São Paulo Municipal Department of Finance issued a tax deficiency notice, 
against which the Company filed timely administrative objection, with subsequent rejection of the appeal filed with 
lower courts. The Company filed an ordinary appeal to the Municipal Tax Council which was not accepted. A writ of 
prevention and an injunction were filed to annull the decision. As of December 31, 2010, the estimated amount of the 
claim is R$ 178.7 million. The Company's legal advisors assessed the likelihood of loss as possible. 

(c)          The Federal Revenue Service rejected some offset requests made by the Company for the extinction of IRPJ/CSLL 
payable, using favorable amounts, arising from undue payments of IRPJ/CSLL, which were paid based on monthly 
estimates. The amount involved is estimated at R$ 40.9 million adjusted through December 31, 2010. Our legal 
advisors assessed it has a possible loss. 

(d)          The Company requested an authorization to offset the Corporate Income Tax (IRPJ) and Social Contribution on Net 

Income (CSLL) of the period from July to September 2002 against the amount of IRPJ paid in excess in 1997 and 
1998, which was rejected. The estimated amount is R$ 39.1 million as of December 31, 2010. The Company´s legal 
advisors assessed this claim as a possible loss. 

(e)          On June 23, 2010, the Company and the municipality of São Paulo signed an agreement to provide water supply and 

sewage services. The negotiation of this agreement led to the extinction of some judicial lawsuits.  The remaining 
judicial lawsuits considered as possible and probable loss are mainly related to taxes and fines. As of December 31, 
2010 the amounts of such judicial lawsuits were R$ 22.3 million and R$ 27.2 million, respectively. 

(f)           In 2005, the Federal Revenue Service partially rejected the Company´s request of offsetting tax credits related to the 

Corporate Income Tax (IRPJ) and the Social Contribution on Net Income (CSLL) in the amount of approximately 
R$ 56.1 million, and R$ 8.7 million, respectively, which relate to the period from January to April 2003, for which the 
Company offset prior year IRPJ and CSLL negative balances. The amounts not ratified by the authority of IRPJ and 
CSLL are R$ 11.2 million and R$ 0.7 million, respectively. As the Company obtained a partial favorable decision on this 
matter, the Company´s legal advisors believe likelihood of loss amounts to R$ 6.2 million and R$ 1.1 million are 
possible and probable, respectively. 

(g)          The Company filed lawsuits against the Municipalities of Bragança Paulista and São Paulo due to the collection by 

these municipalities of a charge on the use of public areas to install the structures used for the water supply and sewage 
services. In the lawsuit filed against the Municipality of Bragança Paulista, the Company granted a preliminary 
injunction related to this charge which prevents the municipality from any current or future of charge collection until 
is the Company reach a final court decision on this matter. In June 2005, the Company got a favorable decision of the 
lower court and the initial remedy was maintained. The municipality appealed against the decision, which has not been 
decided by the Court of Appeals yet. With respect to the Municipality of São Paulo, the Company got a unfavorable 
decision in the lower court which issued a decision confirming the legality of the municipal charge. The Company filed 
an appeal and awaits the judgment. Subsequently, a new law was approved regarding the implementation of the 
collection of a charge on the use of public areas in the Municipality of São Paulo. In April 2004, the Company filed an 
injunction to suspend the collection of the municipal charge. The Company had a favorable decision of the lower court, 
as the injunction was granted which recognizes the municipal charge as undue. The municipality filed an appeal and 
awaits the judgment by the Court of Justice. The Company's legal advisors assessed the likelihood of loss on this 
matter as a possible. 

(v)         Labor claims 

The Company is a party to labor lawsuits, involving issues such as overtime, health hazard premium and hazardous 
duty premium, prior notice, change of function, salary equalization, and other. Part of the amount involved is in 
provisional or final execution at various court levels, and thus is classified as of probable or possible loss. The Company 
recognized a provision for  claims which likelihood of loss is considered probable. 

F-67 

  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(a)     On January 27, 2005, the São Paulo Water, Sewage and Environmental Workers' Union ("Sintaema") filed a lawsuit 

against the Company, claiming compensation for work shifts, which was dismissed by the lower court under Company 
arguments that Sintaema did not have legitimacy to file such lawsuit. However, the Labor Regional Court overruled this 
decision favorably to Sintaema and required that the lawsuit returned to the original court for judgment. The Company's 
appeal to the Superior Labor Court was overruled. The lawsuit returned to the original court and was accepted. The 
Company appealed but the Labor Regional Court maintained the decision; and filed an appeal with the Superior Labor 
Court, for which is awaiting judgment. The Company's legal advisors assess the likelihood of loss, totaling R$ 55.9 million, 
as probable. 

(b)     The São Paulo Water, Sewage and Environmental Workers' Union ("Sintaema") and other unions, filed a lawsuit against 
the Company claiming for, among other matters, over time rate at 100% and a 1.5% salary increase over inflation for the 
years of 2010 and 2011. The Labor Regional Court decided favorably to Sintaema. The Company appealed to the Superior 
Labor Court to suspend such decision, which was accepted. Currently, the Company awaits the judgment. The Company's 
legal advisors assess the likelihood of loss, totaling R$ 10.5 million, as probable. 

(vi)        Environmental claims 

The public civil actions to which the Company is party include the following: 

(a)  The municipality of Águas de São Pedro filed a public civil action requesting SABESP to implement projects to remove 

sewage disposals from green areas, fountain and the Pantanal Lake located at the Pinheiros  Street in the municipality of 
Águas de São Pedro. This claim is also includes, indemnities due to environmental damages and attorney’s fees. The 
Company got an favorable decision of the lower court. The Company got an unfavorable decision of the Court of Justice 
and had 180 days to implement the necessary sewage services and to develop a environmental study for remediation. The 
Court of Justice also established a fine of R$ 5 (five thousand reais) per day. As of December 31, 2010, the total amount of 
the fine was R$ 14.0 million. The Company's legal advisors assess the likelihood of loss as probable. 

(b)  Public civil action filed by the São Paulo Public Prosecution Office against SABESP requesting the court to sentence the 

Company to: 1) terminate of discharging untreated water effluents into the Capivari River and its tributaries, in the City of 
Campos do Jordão, within 540 days from the filing of the lawsuit, subject to a daily fine of R$ 100; and 2) Ensure the full 
environmental recovery due to environmental damage or monetary compensation in case the recovery is proven 
unfeasible. The decision was unfavorable to SABESP, which filed an appeal. The court sustained the decision, and the fine 
in the event of noncompliance was changed in R$ 10. SABESP is awaiting ruling on the extraordinary appeal filed. The fine 
adjusted through December 31, 2010 corresponds to R$ 10.9 million. The Company's legal advisors' assessed the 
likelihood of loss as probable. 

(c)  Public civil action filed by the Public Prosecution Office against SABESP and the City of Cotia seeking individual and joint 
sentencing of the defendants to: (i) the termination of untreated water effluents discharges into the Cotia River or its 
tributaries, subject to a daily fine in the case of noncompliance; (ii) the treatment of sewage prior to discharging it into the 
Cotia River, subject to a daily fine, in the event of noncompliance;(iii) the full restoration of soil, of surface and 
underground water bodies and of vegetation to their original condition, subject to a daily fine, in the event of 
noncompliance; and(iv) the payment of compensation for environmental damages caused to soil, to water sources and to 
underground and surface water bodies that cannot be recovered. The appellate court rendered favorable decisions to us 
with respect to items (i), (iii) and (iv) above. According to evaluations by the court's technical expert, on October 17 2006, 
compensation for environmental damages was R$ 826,800.00 or, alternatively, R$ 5.8 million, if the Company includes 
the damages caused to the river banks (Cotia river). This amount is still under discussion and its approval is subject to a 
final decision by a lower court. As of December 31, 2010, the restated amount of the expert's report is R$ 10.7 million. The 
Company's legal advisors' assessed the likelihood of loss as probable. 

F-68 

  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(d)   A public civil action filed by the Public Prosecution Office against SABESP which result was unfavorable. SABESP was 

condemned to: (i) stop disposing untreated sewage in the fluvial system, a under a penalty of R$ 150 thousands for each 
illegal act; ii) invest in water supply and sewage treatment system in the municipality of Guarei, considering that all 
necessary actions to have water supply and sewage treatment system concluded in 180 days, under a penalty of R$ 100 
thousands per day for noncompliance; iii) indemnity of environmental damages to be evaluated at the end of the action. 
SABESP filed an appeal and awaits the decision. As of December 31, 2010, the amount provisioned for this claim was R$ 
4.4 million. The Company's legal advisors' assessed the likelihood of loss as probable. 

(e)   A public civil action filed by the Public Prosecution Office against SABESP which result was unfavorable. SABESP was 

condemned to: (i) stop disposing untreated sewage in the São Sebastião’s canal before getting the operating and inspection 
licenses, under a penalty of R$ 100 thousands per day; ii) obligation to prepare and maintain the operation of the EPC 
(Pre-conditioning station) Araçá with the respective operating and inspection licenses, under a penalty of R$ 100 
thousands per day; iii) stop disposing untreated domicile sewage in the São Sebastião’s canal; iv) comply with all 
requirements of the inspection and operating licenses, including the requirements from CETESB; v) pay indemnity of R$ 
50 million regarding environmental damages. The Company must present to the court the operating and inspection 
licenses  of Araçá in 6 months, under a penalty of R$ 100 thousands per day. The Company must also contract an expert to 
prepare an environmental study, in 30 days. This action is commencing and the Company awaits the judgment in lower 
court. As of December 31, 2010, this claim amounted to R$ 78.1 million. The Company's legal advisors' assessed the 
likelihood of loss as possible. 

(f)    Public civil action filed by the São Paulo Public Prosecution Office against SABESP and the Municipality of Piracaia 

seeking conviction of the defendants for the obligation not to discharge untreated household sewage into the Atibaia river, 
which is not in compliance with the quality standards provided for in law, under the penalty of specific execution or a daily 
fine. This lawsuit is awaiting ruling at the lower courts. As of December 31, 2010, the restated amount of this lawsuit is 
R$ 9.6 million. The Company's legal advisors assessed it as a possible loss. 

The Company is a party to other environmental lawsuits in municipalities where it operates, arising from the discharge of 
untreated waste, assessed as probable and possible risks of loss by its legal advisors. The amounts recognized as provisions 
do not always represent the final amount to be disbursed as indemnity of alleged damages, in view of the current stage in 
which the such lawsuits are and management's ability to reasonably estimate the amounts of future disbursements. As of 
December 31, 2010, total accrued amount represents the R$ 65.1 million (R$ 58.5 million in December 31, 2009), already 
including the amounts referred to in items (a), (b), (c) and (d). 

(vii)      Settlements reached in 2010 

In 2010 the Company reached several settlements related to environmental issues, as follows: 

(a)               Itupeva   

On March 10, 2010, the Company and the Justice Department of municipality of Jundiai signed a judicial agreement 
for the construction and provision of services to improve the Water Treatment Station and environmental recovery in 
the municipality of Itupeva. The environmental recovery represents indemnities due to environmental damages and 
related to daily fines. The estimated investment in the Water Treatment Station is R$ 16.3 million and the estimated 
cost of the forest recovery is R$ 125 thousands. 

F-69 

  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(b)               Echaporã  

On May 29, 2010, the Company and the Justice Department of municipality of Assis signed a judicial agreement for 
constructing the sewage treatment system in Echaporã and environmental recovery of the municipality of Assis. The 
environmental recovery represents indemnities due to environmental damages. The estimated investment in the 
sewage treatment system is R$ 1.5 million and the estimated cost of the forest recovery is R$ 875 thousands; 

(c)                Quintana  

On May 28, 2010, the Company and the Justice Department of municipality of Pompéia signed a judicial agreement 
for environmental recovery and indemnities caused by environmental damages and related to daily fines. The 
estimated cost of the forest recovery is R$ 560 thousands. 

(d)               Santo André 

On June 9, 2010, the Company, the environmental sanitation service of the municipality of Santo André and the São 
Paulo State Prosecution Office agreed a term of conduct regarding enlargement of the collection, transportation and 
domestic sewage treatment system in Santo André. The estimated amount of the investment is R$ 20.7 million. 

(e)               Itararé  

On September 30, 2010, the Company and Justice Department of municipality of Itararé signed a judicial agreement 
for the construction of a sanitation system in the municipality of Itararé and environmental recovery. The 
environmental recovery represents indemnities caused by environmental damages and related daily fines. The 
estimated cost of the sanitation system is R$ 17.3 million and the estimated cost of the forest recovery is R$ 350 
thousands. 

(f)                 Arujá  

On November 19, 2010, the Company, the São Paulo State Prosecution Office and the municipality of Arujá signed a 
term of conduct for enlarging the domestic sewage system in the urban area of Arujá. The estimated cost of the sewage 
system enlargement is R$ 51.9 million. 

(g)               Ribeirão Grande 

On November 25, 2010, the Company, the São Paulo State Prosecution Office and the municipality of Ribeirão Grande 
signed a term of conduct for improving the sewage collection and treatment systems in Ribeirão Grande. The 
estimated cost of investment is R$ 5.5 million. 

(viii)    Other concession-related legal proceedings 

(a)   On March 25, 2005, the municipality of Itapira revoked the concession contract and filed an Assets Repossession Action 
against SABESP. The outcome of this claim was unfavorable to the Company. The Company appealed the decision, but in 
view of the compensation lawsuit filed against the aforementioned municipality, the Company has waived the appeal. 

(b)  The municipality of Cajobi has filed a Repossession Action that seeks the takeover the water supply and sewage services, 

and sentencing the Company to pay for losses and damages for amounts received as water and sewage tariffs not received 
in view of utilities explored since the enactment of the Municipal Decree, and for the use of assets related to the 
concession. The court decision confirmed the Municipality's takeover of the water and sewage services. On August 25, 
2008, SABESP filed an appeal that awaits judgment. The Municipality provides water supply and sewage collection 
services since May 29, 2007 under injunction granted in the interlocutory appeal. 

F-70 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(c)  The City of Araçoiaba da Serra filed a Repossession Action seeking an authorization to enter concession-related facilities, 

including all properties and chattels linked to the water supply and sewage treatment services. The Municipality is now 
managing and operating these services in view of the termination of the concession agreement on September 23, 2006. 
The Municipality also claims the definitive takeover of the services, including due handover of all assets, rights and 
privileges previously transferred to SABESP. The initially granted injunction and confirmed by the appellate court 
maintain the Municipality as the service provider. The Company has subsequently filed for an injunction to request the 
early production of evidence. The lawsuit is in the fact-finding phase.  

(d)  On July 2, 2010, the City of Tarumã filed a writ of prevention related to all assets related to the collection, treatment and 
water supply and sewage services systems. On January 19, 2011 the Company restarted its operation in this municipality 
by a court decision. By injuction decision, the assets will be under SABESP´s custody due to eventual liquidation of the 
indemnity to SABESP. SABESP awaits the final decision. 

(e)   In December 2, 1997, the municipality of Santos enacted a law expropriating the Company's water and sewerage mains in 

Santos. The Company requested an injunction against the expropriation which was denied by the lower court. This 
decision was subsequently reversed by the State of São Paulo appellate court, which then issued an injunction suspending 
the law. The Company was granted a favorable decision at the lower court, and the municipality of Santos appealed against 
the decision. Although the decision was maintained by the Court of Justice, it is not final. Despite the pending action, the 
Company is operating the water supply and sewage collection systems in the municipality of Santos.    

(f)   The municipality of Tuiuti has brought a declaratory action seeking to recognize the inexistence of any judicial or legal 

grounds to justify our permanence as the provider of water supply and sewage services in the municipality of Tuiuti, and 
the subsequent taking over of these services by the municipality. The Company responded with a counterclaim against the 
municipality seeking a statement corroborating the existence of a legal relationship between the two parties for subsequent 
compensation for investments made. The lower court decision was partially unfavorable to SABESP as it declared that 
there was no legal relationship between the Municipality and SABESP relate to the service concession and confirmed the 
injunction authorizing the takeover of the services. However, the court's decision was favorable to the counterclaim filed 
by SABESP and sentenced the Municipality to pay R$ 541, restated from March 1996. The Company filed an appeal on 
July 22, 2009. On the other hand, the Municipality also filed an appeal. The State Appellate Court partially agreed with 
SABESP to increase the indemnity to R$ 1.1 million (Dec./1995). SABESP is not operating in this municipality as required 
by injunction granted to the Municipality. 

(g)   On January 12, 2001, the Company filed an ordinary action against the municipality of Presidente Prudente for the 
purpose of recognizing the contractual right to maintain SABESP as the sanitation service until the legal and formal 
cancellation of the contract, including the respective indemnity, which recognizes the abusive and illegal the acts of the 
municipality. The Company still provides sanitation service in Presidente Prudente according to the Decree nº 
21,228/2010, which extended the concession contract of Presidente Prudente up to March 2011. 

As of December 31, 2010, the lawsuits filed by the Municipalities of Itapira, Cajobi, Araçoiaba da Serra and Tarumã totaled 
approximately R$ 12.2 million and, based on our legal advisors' assessment, the likelihood of loss in possible. Our legal 
advisors assessed the likelihood of loss as probable regarding the municipalities of Santos, Tuiuti. With regards to 
Presidente Prudente the likelihood of loss is considered remote. 

F-71 

  
  
  
  
  
  
  
  
  
  
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

16           Employee Benefits 

(a)         Health benefit plan 

The health benefit plan is managed by Fundação SABESP de Seguridade Social - SABESPREV and consists of optional, free 
choice, health plans sponsored by contributions of SABESP and the active participants, as follows: 

.     Company - 7.6% (December 31, 2009 - 7.5%) on average, of gross payroll; 

.     Participating employees - 3.21% of base salary and premiums, equivalent to 2.3% of gross payroll, on average. 

(b)            Pension plan benefits 

The amounts recognized in the balance sheet are determined as follows: 

Funded plan - G1  
Present value of obligations 
Fair value of plan assets 
Unrecognized actuarial gains (losses) 

Unfunded plan - G0  
Present value of defined benefit obligations 
Unrecognized actuarial gains (losses) 

Liability as per balance sheet - Pension obligations 

Plan G1 

December 31, 2010 December 31, 2009

1,572,933 
(1,113,189) 
27,588 

1,422,993
(1,123,695)
232,694

487,332 

531,992

1,638,036 
(321,330) 

1,316,706 

1,804,038 

1,295,067
4,694

1,299,761

1,831,753

The Company sponsors a defined benefit pension plan for its employees ("Plan G1"), which is managed by Fundação SABESP 
de Seguridade Social - SABESPREV, the defined benefit pension plan is sponsored by monthly contributions as follows: 2.10% 
from the Company and 2.3% from the participants. 

As of December 31, 2010, SABESP had a net actuarial liability of R$ 487,332 (December 31, 2009 - R$ 531,992) representing 
the difference between the present value of the Company's defined benefit obligations to the participating employees, retired 
employees, and pensioners; the fair value of the related assets; and unrecognized actuarial gains. 

Changes in the present value of defined benefit obligation over the year are as follows: 

F-72 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
 
  
  
 
  
  
  
 
  
 
  
  
 
  
  
  
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Defined benefit obligation, beginning of year 

Service cost 
Interest cost 
Actuarial (gain) losses 
Curtailment and partial settlement 
Benefits paid 

2010  

2009  

2008

1,422,993  
27,200  
152,470  
222,510  
(195,561)  
(56,679)  

1,433,710  
31,116  
155,514  
(149,634)  
-  
(47,713)  

1,386,563
33,347
164,124
(91,189)
-
(59,135)

Defined benefit obligation, end of year 

1,572,933  

1,422,993  

1,433,710

Changes in the fair value of plan assets over the year are as follows: 

Fair value of plan assets, beginning of year 

Expected return on plan assets 
Actuarial gain or (loss) 
Company's contributions 
Employees' contributions 
Curtailment and partial settlement 
Benefits paid 

Fair value of plan assets, end of year 

The amounts recognized in the income statement are as follows: 

Current service cost 
Interest cost 
Expected return on plan assets 
(Gain) or loss amortization 
Curtailment and partial settlement 
Gain not recognized of curtailment 

Total 

2010  

2009  

1,123,695  
122,630  
28,318  
13,835  
15,574  
(134,184)  
(56,679)  

976,545  
113,544  
47,230  
12,854  
21,235  
-  
(47,713)  

1,113,189  

1,123,695  

2008

969,440
40,723
-
12,492
13,025
-
(59,135)

976,545

2010  

2009  

2008

27,200  
152,470  
(122,630)  
(10,397)  
(61,377)  
(15,266)  

31,116  
155,514  
(113,544)  
-  
-  
-  

33,347
164,124
(130,342)
-
-
-

(30,000)  

73,086  

67,129

In 2010, 2009 and 2008, the expense related to the defined benefit obligation under Plan G1 was recorded as follows: R$ 
24,314, R$ 51,585 and R$ 47,934 in cost of sales and services, R$ 3,547, R$ 9,714 and R$ 8,616 in Selling expenses and R$ 
2,139, R$ 11,787 and R$ 10,579 in Administrative expenses, respectively. 

Curtailment and partial settlement 

As of July, 2010, aiming at resolving the deficit related to the Defined Benefit Plan (G1), SABESP and SABESPREV have 
structured a process through which the participants may elect to move from the Defined Benefit Plan to a Defined 
Contribution Plan, the SABESPREV Mais. 

The migration from plan G1 to SABESPREV Mais resulted in actuarial gain, related to the proportional part of the employees 
who migrated, determined by the present value of the assets and liabilities of the pension plan. The Company recognized gain 
related to curtailment and partial settlement of the present value of the defined benefit pension plan and the fair value of the 
plan assets, amounting to R$ 61,377. The Company also recognized prior actuarial gains amounting to R$ 15,266. 

F-73 

  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
   
   
 
  
   
   
 
  
  
   
   
 
  
   
   
 
  
  
   
   
 
  
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The period for the plan migration (from July to November 2010) was suspended through an injunctive relief granted by the 
Court of Justice of the State of Sao Paulo, on October 20, 2010 until the claims from the parties involved are taken into 
consideration. 

Expected expenses 

Current service cost 
Interest cost 
Expected return on plan assets 
Participants contributions 
Total additional expenses 

The principal actuarial assumptions used were as follows: 

Discount rate – real 
Inflation rate 
Expected rate of return on assets 
Salary growth rate 

2011

26,869
158,069
(111,307)
(13,407)
60,224

2010  

2009

6.0% p.a.
4.0% p.a.
10.2% p.a.
6.1% p.a.

6.6% p.a.
4.0% p.a.
10.8% p.a.
6.6% p.a.

Assumptions regarding future mortality experience are set based on 90% of mortality table AT83 for 2010 and 2009. 

In 2010, the Company changed the contribution rate from 10.8% per annum to 10.2% per annum to adequate the actual long 
term economical circumstances, resulting from an interest rate of 6.0% and an inflation rate of 4.0%. 

The number of active participants as of December 31, 2010 was 10,444 (December 31, 2009 - 15,145). The number of inactive 
participants as of December 31, 2010 was 5,579 (December 31, 2009 - 4,751). 

(c)             Sensitivity of the pension plan 

Funded plan - G1  
Discount rate 

Inflation rate 

Salary growth rate 

Life expectation 

Plan assets 

Change in expectation  

Impact on liability

Increase of 0.5%  
Decrease of 0.5%  

Increase of 0.5%  
Decrease of 0.5%  

Increase of 0.5%  
Decrease of 0.5%  

Decrease of 6.02%
Increase of 7.05%

Decrease of 6.02%
Increase of 7.05%

Increase of 2.81%
Decrease of 2.53%

Increase of 1 year  

Increase of 1.14%

The plan's investment policies and strategies are aimed to reduce investment risk through diversification, considering such 
factors as the liquidity needs and funded status of plan liabilities, types and availability of financial instruments in the local 
market, general economic conditions and forecasts as well as requirements under local pension law. The plan's asset allocation 
and external asset management strategies are determined with the support of reports and analysis prepared by SABESPREV 
and independent financial consultants. Under its allocation strategy, pension assets of the Company are comprised as follows: 
F-74 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
  
 
  
  
  
  
  
  
  
 
 
 
 
 
 
 
  
  
   
 
   
 
  
  
   
 
  
  
   
 
  
  
   
 
  
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Asset category 

Fixed rate securities 
Equity securities 
Real estate 
Loans 

Total 

Allocation - %

December 
31, 2010  

December 
31, 2009

72%  
21%  
5%  
2%  

100%  

78%

15%

5%

2%

100%

Restrictions with respect to asset portfolio investments, in the case of federal government securities for internal management, 
are as follows: 

i) papers securitized by the National Treasury will not be permitted; 
ii) exposure to fluctuations in exchange rates will not be permitted, i.e., if there are any exchange bills in the portfolio, swaps 
must be used to hedge existing exposure. 

Restrictions with respect to asset portfolio investments, in the case of variable-income securities for external management, are 
as follows: 

i) day-trade operations will not be permitted; 
ii) sale of uncovered options is prohibited; 
iii) swap operations without guarantee are prohibited; 
iv) leverage will not be permitted, i.e., operations with derivatives representing leverage of asset or selling short are prohibited, 
such operations cannot result in losses higher than invested amounts. 

SABESPREV does not invest in stock or bonds issued by the Company. The investments in loans and equity securities are held 
mainly in investment funds managed by government controlled banks. The real estate held in the portfolio is not used by the 
Company. 

The expected long-term rate of return on plan assets was determined based on the weighted average estimated return of the 
plan assets, which includes fixed rate securities, equity securities, real estate, and loans, based on information obtained from 
SABESPREV. This projected long-term rate includes the projected long-term inflation rate and takes into consideration such 
factors as projected future interest yield curves and economic projections available in the market.  

The plan assets had a return of 13.4% in 2010 and 16.6% in 2009. 

Expected contributions to Plan G1 for the year ending December 31, 2011 is R$22,441. 

SABESPREV's technical deficit as of December 31, 2010 was R$ 437,652 (December 31, 2009 - R$ 582,819). The Company and 
the SABESPREV are in process of negotiation to resolve the technical deficit, by changing the pension plan from a Defined 
Benefit Plan to Defined Contribution Plan. Management expects not to incur in additional costs resulting from the change of 
the referred plans.  

Defined Contribution pension plan (SABESPREV MAIS) 

As of July, 2010, aiming at resolving the deficit related to the Defined Benefit Plan (DB), SABESP and SABESPREV have 
structured a process through which the participants may elect to move from the Defined Benefit Plan to a Defined 
Contribution Plan, the SABESPREV Mais. 

F-75 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
  
  
   
 
  
  
  
  
  
  
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

The period for the plan migration (from July to November 2010) was suspended through an injunctive relief granted by the 
Court of Justice of the State of Sao Paulo, on October 20, 2010 until the claims from the parties involved are taken into 
consideration. 

On December 31, 2010, after the migration of the participants, the Defined Contribution Plan remained with 4,023 
participants. 

With respect to the defined contribution pension plan, the contributions from the sponsor represent 100% over the total basic 
contribution from the participants. 

As set forth by the Employee Benefits standard, the gains arising from curtailment of a plan in the amount of R$ 64,891 must 
be recognized upon its occurrence. Thus, the amount of the unrecognized actuarial gain of R$ 27,504, is offset by the gain from 
the migration plan. 

Regarding the Defined Contribution Plan, the commitment to all participants who migrated up to December 31, 2010, as per 
the actuarial report, amounted to R$ 19,331, of which, R$ 18,308 relates to Active and R$ 1,023 relates to the inactive 
participants. The Company has already made payments in the amount of R$ 13,256 up to December 31, 2010. 

Plan G0 

The Company is also co-obligor to a supplemental defined benefit pension plan. Pursuant to a law enacted by the State 
Government, certain employees who provided service to the Company prior to May 1974 and retired as an employee of the 
Company acquired a legal right to receive supplemental pension payments, which rights are referred as "Plan G0". The 
Company pays these supplemental benefits on behalf of the State Government and makes claims for reimbursements from the 
State Government, which are recorded as accounts receivable from shareholder, limited to the amounts considered virtually 
certain that will be reimbursed by the State Government. As of December 31, 2010, the Company recorded a defined benefit 
obligation for Plan G0 of R$ 1,316,706 (December 31, 2009 - R$ 1,299,761). 

Changes in the present value of defined benefit obligation over the year are as follows: 

Defined benefit obligation, beginning of year 

Service cost 
Interest cost 
Actuarial (gain) losses 
Benefits paid 

Unrecognized gains (losses) 

2010  

2009  

2008

1,295,066  
9  
135,344  
326,025  
(118,408)  

1,638,036  
(321,330)  

1,338,587  
9  
136,299  
(71,837)  
(107,991)  

1,295,067  
4,694  

1,237,667
9
140,879
67,143
(107,111)

1,338,587
-

Defined benefit obligation, end of year 

1,316,706  

1,299,761  

1,338,587

The amounts recognized in the income statement are as follows: 

Current service cost 
Interest cost 

Total 

2010  

2009  

9  
135,344  

9  
136,299  

135,353  

136,308  

2008

9
140,879

140,888

In 2010, 2009 and 2008, the expense related to the defined benefit obligation under Plan G0 was recorded in administrative 
expenses. 

F-76 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
 
  
   
   
 
  
  
   
   
 
  
  
   
   
 
  
   
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Expected expenses 

Current service cost 
Interest cost 
Gain or loss amortization 
Total additional expenses 

The principal actuarial assumptions used were as follows: 

Discount rate – real 
Inflation rate 
Salary growth rate 

2011

548
161,718
157,527
319,793

2010  

2009

6,0% p.a.  
4.0% p.a.  
6.1% p.a.  

6.6% p.a.
4.0% p.a.
6.6% p.a.

Assumptions regarding future mortality experience are set based on 90% of mortality table AT83 for 2010 and 2009. 

The number of active participants as of December 31, 2010 was 2,536 (December 31, 2009 - 2,727). The number of 
beneficiaries, retirees and survivors as of December 31, 2010 was 2,474 (December 31, 2009 - 2,602). 

Expected benefits to be paid under Plan G0 for the year ending December 31, 2011 is R$ 199,334. 

(d)            Sensitivity of the pension plan 

Plan – G0  
Discount rate 

Wages increase rate 

Life expectation 

(e)             Profit sharing 

Change in expectation  

Impact on liability

Increase of 0.5%  
Decrease of 0.5%  

Increase of 0.5%  
Decrease of 0.5%  

Increase of 1 year  

Decrease of 4.65%
Increase of 5.07%

Increase of 0.00%
Decrease of 0.00%

Increase of 1.57%

The Company has a profit sharing program in accordance with an agreement with labor union and SABESP. The period 
covered represents the Company fiscal year, commence in January to December. The limit of the profit sharing is one month 
salary for each employee, depending on performance goals reached. As of December 31, 2010 the profit distribution accrued 
amounted to R$ 52,600 (2009 – R$ 53,407). 

17           Equity 

(a)              Authorized capital 

The Company is authorized to increase capital by up to R$ 10,000,000, based on a Board of Directors' resolution, after 
submission to the Fiscal Council. 

The Shareholders' meeting held on April 29, 2008, approved a capital increase in the amount of R$ 2,800,000 with a transfer 
from investments reserve. No additional common shares were issued. 

F-77 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
  
 
  
  
  
  
  
  
   
  
   
 
  
  
  
  
  
   
 
   
 
  
  
   
 
  
  
   
 
  
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(b)              Subscribed and paid-in capital 

Subscribed and paid-in capital is represented by 227,836,623 registered common shares, without par value, held as follows: 

December 31, 2010  

December 31, 2009

Number of shares  

%   Number of shares  

State Department of Finance  
Companhia Brasileira de Liquidação e Custódia 
The Bank Of New York ADR Department (equivalent in shares) (*)
Other 

114,508,085  
51,707,376  
61,418,144  
203,018  

50.26%  
22.69%  
26.96%  
0.09%  

114,508,083  
54,052,476  
58,641,584  
634,480  

227,836,623  

100.0%  

227,836,623  

%

50.26%

23.72%

25.74%

0.28%

100.0%

(*)  each ADR is equal to 2 shares 

(c)              Distribution of earnings 

Shareholders are entitled to a minimum mandatory dividend of 25% of the adjusted net income under Brazilian GAAP, 
calculated according to the Brazilian corporate law. The dividends do not bear interest and the amounts not claimed within 
three years from the date of the Shareholders' Meeting that approved them mature in favor of the Company. 

The mandatory minimum dividends are calculated as follows: 

Net income of the year 
Adjustments to old Brazilian GAAP  

Net income according to Brazilian GAAP 
(-) Legal reserve - 5% 
(-) Donations 

Mandatory minimum dividend - 25% 

2010  

2009  

2008

1,630,447

-

1,630,447

(81,522)

-

1,507,747  
(133,868)  

1,373,879  
(68,694)  
(12,994)  

1,548,925  

1,292,191  

387,231

323,048  

862,946

(799,375)

63,571

(3,178)

(25,780)

34,613

8,653

In 2010, the Company accrued interest on shareholders' equity in the amount of R$ 455,992 (2009 - R$ 394,157) of which 
R$ 422,960 (2009 - 365,401) was attributed to dividends, net of withholding income tax in the amount of R$ 33,032 (2009 - 
R$ 28,756). Interest on shareholders' equity was calculated in conformity with Article 9 of Law 9249/95, at the Long-term 
Interest Rate (TJLP) and recorded as dividends. 

The Company declared dividends in the amount of R$ 455,992 to be approved at the general shareholders meeting on April 
28, 2011. The Company recorded dividends in the amount of R$ 387,231, which considers the minimum dividend amount 
established by the articles of association. 

(d)             Capital reserve 

The capital reserve includes tax incentives and donations received through December 31, 2007. 

F-78 

  
  
  
  
  
  
  
 
  
  
  
  
 
  
  
  
  
  
  
  
  
   
   
   
 
  
  
   
   
   
 
  
   
   
   
 
  
  
  
 
 
   
 
 
 
  
 
 
   
 
 
 
 
  
 
 
   
 
  
  
 
 
   
 
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(e)              Legal reserve 

Legal reserve is a requirement for all Brazilian corporations and represents accrual of 5% of annual net income determined 
based on Brazilian law, up to 20% of capital. 

(f)               Investments reserve 

The investments reserve is specifically formed by the portion corresponding to own funds assigned to the expansion of the 
water supply and sewage treatment systems, based on the budget approved by the fiscal counsel. As of December 31, 2010 and 
2009, this reserve was recognized, pursuant to article 196 of Law 6404/76, in the amount of R$ 2,825,048 and R$ 1,732,115, 
respectively. 

(g)         Destination of profit of the year 

Net profit 
(+)  Retained earnings 
(-)  Legal reserve – 5% 
(-)  Mandatory minimun dividend  
(-)  Additional dividend 
Investment reserve 

18           Earnings Per Share 

(a)         Basic and diluted 

2010 
1,630,447 
56,047 
(81,522) 
(387,231) 
(68,761) 
1,148,980 

Basic earnings per share is calculated by dividing the income attributable to the Company's shareholders by the weighted 
average number of common shares issued during the year. 

Attributable income to the Company's shareholders 
Weighted average number of common shares issued (in shares) 

2010  

2009  

2008

1,630,447
227,836,623  

1,507,747  
227,836,623  

862,946

227,836,623

Basic and diluted earnings per share (reais  per share) 

7.156  

6.618  

3.788

The Company does not have potentially dilutive common shares outstanding or debts convertible into common shares. 
Accordingly, basic and diluted earnings per share are equal. 

(b)         Capital and earnings reserves 

Capital reserves are comprised of tax incentives and donations received by the company and may only be used for future 
capital increases. 

Earnings reserves - legal reserve: this reserve is formed by allocating 5% of annual statutory profits until the aggregate amount 
of the reserve equals 20% of our capital stock. However, the Company is not required to make any allocations to our legal 
reserve in a year in which the legal reserve, when added to our other established capital and earnings reserves, exceeds 30% of 
our capital stock. The amounts allocated to such reserve may only be used to increase our capital stock or to offset losses. 
Therefore, they are not available for the payment of dividends.  

Earnings reserve - investments reserve: this is created by allocation of statutory profits in order to fund the expansion of the 
water supply and sewage treatment systems. 

Retained earnings (losses): the statutory balance of this account is zero as all retained earnings must be distributed or 
allocated to an earnings reserve at year end. The balance of these accounts relates to IFRS adjustments at year end. 

F-79 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
   
 
 
  
 
 
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

19           Operating Segments 

Management has determined the operating segments based on the reports that the Executive Board reviews and uses to make 
strategic decisions. These reports are prepared based on the Accounting Practices Adopted in Brazil (the old Brazilian GAAP) 
as of December 31, 2009. 

The Executive Board considers the business from a rendering of services perspective (water supply and sewage services). No 
operating segment has been aggregated. 

The segment information for the reportable segments for the year ended December 31, 2010 is as follows: 

Water  

Sewage  

Reconciliation to 
the financial 
statements (*)  

Total per Income 
Statement

2010

Gross revenue from sales and services - from external customers 

4,427,347  

3,398,733  

1,960,495  

Gross sales deductions 

Net revenue from sales and services - from external Customers 

(314,282)  

4,113,065  

(241,266)  

3,157,467  

-  

1,960,495  

9,786,575

(555,548)

9,231,027

Costs, selling and administrative expenses 

(2,998,303)  

(1,715,756)  

(1,846,635)  

(6,560,694)

Income from operations before     other operating expenses, net 

1,114,762  

1,441,711  

113,860  

2,670,333

Other operating expenses, net 

Income from operations before financial income (expenses) and income 
taxes 

Depreciation and amortization 

294,406  

264,328  

(6,550)  

The segment information for the reportable segments for the year ended December 31, 2009 is as follows: 

1,830

2,672,163

552,184

2009

Gross revenue from sales and services - from external customers 

Gross sales deductions 

Water  

4,104,332  

(286,813)  

Sewage  

3,131,886  

(218,858)  

Reconciliation to 
the financial 
statements  (*)  

Total per Income 
Statement

1,848,972  

-  

9,085,190

(505,671)

8,579,519

Net revenue from sales and services - from external Customers 

3,817,519  

2,913,028  

1,848,972  

Costs, selling and administrative expenses 

(3,015,724)  

(1,533,549)  

(1,865,503)  

(6,414,776)

Income from operations before other operating expenses, net 

801,795  

1,379,479  

(16,531)  

Other operating expenses, net 

Income from operations before financial income (expenses) and income 
taxes 

2,164,743

(44,425)

2,120,318

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
  
  
   
   
   
 
  
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
   
   
   
  
  
   
   
   
 
  
   
   
   
  
  
   
   
   
 
  
  
  
   
   
   
  
  
   
   
   
 
  
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
   
   
   
  
  
   
   
   
 
  
   
   
   
Depreciation and amortization 

301,990  

258,699  

1,547  

562,236

The segment information for the reportable segments for the year ended December 31, 2008 is as follows: 

F-80 

  
  
  
  
   
   
   
 
  
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Gross revenue from sales and services - from external customers  

Gross sales deductions 

Net revenue from sales and services - from external customers 

Water  

3,893,142  

(277,310)  

3,615,832  

Sewage  

2,945,661  

(209,821)  

2,735,840  

2008

Reconciliation to 
the financial 
statements  (*)  

Total per Income 
Statement

1,457,622  

-  

1,457,622  

8,296,425

(487,131)

7,809,294

Costs, selling and administrative expenses 

(2,717,310)  

(1,411,906)  

(1,433,319)  

(5,562,535)

Income from operations before other operating expenses, net 

898,522  

1,323,934  

24,303  

Other operating expenses, net 

Income from operations before financial income (expenses) and income 
taxes 

Depreciation and amortization 

(*) Adjustments details 

349,754  

268,044  

400  

Adjustments to gross revenue from sales and services are comprised of: 

Year ended December 31 

2010  

2009  

Reclassification of  revenues for which receipt is not reasonably assured 
Gross revenue from construction recognized under IFRIC 12 

 (a)

 (b)

(170,189)

2,130,684

(190,837)  
2,039,809  

2,246,759

(125,494)

2,121,265

618,198

2008

(219,248)

1,676,870

Adjustments to costs, selling and administrative expenses are comprised of: 

1,960,495

1,848,972  

1,457,622

Reversal of allowance for doubtful accounts 

Year ended December 31 

2010  

 (a)

170,189

(2,081,081)

2009  

190,837  

2008

219,248

  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
  
  
   
   
   
 
  
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
  
  
   
   
   
 
  
   
   
   
  
  
   
   
   
 
  
   
   
   
  
  
   
   
   
 
  
  
  
  
  
  
 
 
   
 
  
  
  
  
 
 
   
 
 
 
  
  
  
  
  
  
  
  
 
  
  
  
  
 
 
   
 
  
  
  
  
 
 
   
 
 
Construction costs recognized under IFRIC 12 
Other adjustments to old  Brazilian GAAP 

 (b)

(c)

64,257

(1,846,635)

(2,009,664)  
(46,676)  
(1,865,503)  

(1,650,503)

(2,064)
(1,433,319)

(a)    Reclassification related to services billed to certain municipalities for which receipt is not reasonably assured and which are not recognized as revenues. In the operating report 
such amounts are recognized as revenues and the respective allowance for doubtful accounts is also recognized in operating expenses, as it was presented in accordance with old 
Brazilian GAAP. 

(b)    Revenue from concession construction contracts is recognized in accordance with IAS 11, Construction Contracts, using the percentage-of-completion method. Revenue from 

cost-plus contracts is recognized by reference to the construction costs incurred during the period plus a fee earned. In the operating report, construction costs are recognized as 
property, plant and equipment, as it was presented in accordance with old Brazilian GAAP. 

(c)     Other adjustments to operating report are mainly related to pension costs, depreciation/amortization, capitalization and respective amortization of borrowing costs and 

donations. 

F-81 

  
  
  
  
  
 
 
  
  
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Reportable segment's assets are reconciled to total assets as follows: 

Water supply 
Sewage services 

Segment assets for reportable segments 

Total current assets 
Noncurrent assets 

Customer accounts receivable, net 
Accounts receivable from related party, net 
Indemnities receivable 
Escrow deposits 
Deferred income taxes 
Property, plant and equipment, net 
Other noncurrent assets 

Total assets per the balance sheet 

There are no liabilities allocated to the reportable segments. 

20          Net Revenue from Sales and Services 

The operating revenue comprises the following: 

Gross revenue by region 

Greater São Paulo Metropolitan area 
Regional Systems (i) 
Gross revenue from construction 

Service taxes and deductions 

Total 

December 31, 2010   December 31, 2009

7,980,302  
9,145,194  

17,125,496  

3,590,121  

352,839  
231,076  
146,213  
43,543  
78,440  
249,606  
1,533,250  

6,987,785

8,861,645

15,849,430

2,271,123

266,543

260,365

146,213

46,365

43,636

190,430

1,169,019

23,350,584  

20,243,124

2010  

2009  

2008

5,699,618  
1,956,273  
2,130,684  
(555,548)

5,280,758  
1,764,623  
2,039,809  
(505,671)  

4,988,430
1,631,125
1,676,870
(487,131)

9,231,027  

8,579,519  

7,809,294

(i)  Comprises the municipalities operated in the countryside and the coast of São Paulo State. 

21           Operating Costs and Expenses 

The operating costs and expenses are composed of the following: 

Cost of sales and services 
      Salaries and payroll charges 
       Pension plan 
      Construction costs 
      General supplies 
      Treatment supplies 
      Outsourced services 
      Electricity 
      General expenses 

2010  

2009  

2008

994,631
(11,799)
2,081,081

135,113  
136,546  
603,924  
529,480  
202,645  

1,124,655  
54,948  
2,009,664  
142,154  
136,722  
552,708  
483,675  
45,099  

1,027,527
-
1,650,503
135,814
133,154
443,973
457,740
36,400

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
  
   
 
  
   
 
   
 
  
   
 
  
 
 
   
 
 
  
 
 
   
 
  
  
 
 
   
 
 
 
   
 
 
 
 
      Depreciation and amortization 

522,927  

537,629  

597,742

5,194,548  

5,087,254  

4,482,853

F-82 

  
  
 
 
   
 
  
  
 
 
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Selling expenses 
      Salaries and payroll charges 
       Pension plan 
      General supplies 
      Outsourced services 
      Electricity 
      General expenses 
      Depreciation and amortization 
      Allowance for doubtful accounts, net of recoveries 

Administrative expenses 
      Salaries and payroll charges 
       Pension plan 
      General supplies 
      Outsourced services 
      Electricity 
      General expenses 
      Depreciation and amortization 
      Tax expenses 

Cost, Sales and Administrative expenses 
      Salaries and payroll charges 
       Pension plan 
      Construction costs 
      General supplies 
      Treatment supplies 
     Outsourced services 
      Electricity 
      General expenses 
      Depreciation and amortization 
      Tax expenses 
      Allowance for doubtful accounts, net of recoveries 

22          Financial Expenses and Income 

Financial expenses 
      Interest and charges on loans and financing - local currency 
      Interest and charges on loans and financing - foreign currency 
      Other financial expenses (*) 
      Income tax over international remittance 
      Inflation adjustment  on loans and financing 
      Other inflation adjustments 
      Inflation adjustment  on provisions 

2010  

2009  

185,012  
(1,375)
6,488  
216,038  
775  

69,581
3,922  
232,505  

202,090  
9,714  
7,600  
204,235  
739  
63,474  
5,219  
117,351  

2008

179,197
-
6,159
131,921
751
60,782
3,875
117,016

712,946  

610,422  

499,701

141,749  
93,683  
5,167  
150,300  
1,268  

172,241
25,335  
63,457  

155,719  
56,409  
6,211  
154,341  
1,043  
268,971  
19,388  
55,018  

653,200  

717,100  

1,321,392  
80,509  

2,081,081

146,768  
136,546  
970,262  
531,523  
444,467  
552,184  
63,457  
232,505  

1,482,464  
121,071  
2,009,664  
155,965  
136,722  
911,284  
485,457  
377,544  
562,236  
55,018  
117,351  

148,619
-
4,581
112,720
1,099
247,819
16,581
48,562

579,981

1,355,343
-
1,650,503
146,554
133,154
688,614

459,590
345,001
618,198
48,562

117,016

6,560,694  

6,414,776  

5,562,535

2010  

2009  

2008

(388,502)
(50,797)
(168,462)
(3,412)
(87,330)
(47,041)
(43,923)

(328,280)  
(61,852)  
(95,031)  
(3,552)  
(1,356)  
(22,481)  
(252,645)  

(423,245)
(71,344)
(34,615)
-
(127,938)
(20,512)
(165,130)

  
  
  
  
  
  
  
  
 
 
   
 
 
 
  
 
 
   
 
  
  
 
 
   
 
 
 
   
 
 
  
 
 
   
 
  
  
 
 
   
 
 
 
   
 
 
  
 
 
   
 
  
  
  
 
 
   
 
 
 
   
 
 
 
 
 
 
 
 
  
 
 
   
 
      Total Financial expenses 

(789,467)

(765,197)  

(842,784)

F-83 

  
 
  
 
 
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

Financial income 
      Inflation adjustment  gains 
      Income on short-term investments 
      Interest and other income 

      Total Financial income 

      Financial expenses, net 

Foreign exchange result, net 
      Foreign exchange variation on loans and financing 
      Other foreign exchange variations 
      Other foreign exchange variations 

120,779  
137,720  
85,415  

62,964  
74,220  
89,598  

158,247
62,301
88,064

343,914  

226,782  

308,612

(445,553)

(538,415)  

(534,172)

66,191  
(214)

169  

536,774  
(1,028)  
(7,297)  

(436,157)
-
(2,712)

66,146  

528,449  

(438,869)

(*) Other financial expenses are mainly comprised of interest paid related to lawsuit and interest related to liabilities of 
contract programs. 

23          Other Operating Expenses, Net 

The breakdown of other operating expenses, net is as follows: 

Other net operating income 
Other operating expenses 

2010  

2009  

2008

39,456  
(37,626)  

45,473  
(89,898)  

47,944
(173,438)

Other operating income (expenses), net 

1,830  

(44,425)  

(125,494)

Other operating income is comprised of sale of property, plant and equipment, sale of contracts awarded in public bids, and 
indemnities and reimbursement of expenses, fines and collaterals, property leases, reuse water, PURA and Aqualog projects 
and services. 

Other operating expenses consist mainly of write-off of property, plant and equipment due to obsolescence, discontinued 
construction works, unproductive wells, projects considered economically unfeasible, and losses on property, plant and 
equipment. 

24          Commitments 

(i)          Operating leases 

As of December 31, 2010, operating leases already contracted require the following minimum payments, as follows: 

2011 
2012 
2013 
2014 

Total 

43,343
24,780
19,040
9,192

96,355

Lease expenses for the years ended December 31, 2010, 2009 and 2008 were R$ 29,002, R$ 22,270 and R$ 8,516, 
respectively. Lease expenses refer to the following: property rentals, vehicle rentals, machinery and equipment leases, IT 
equipment leases, and photocopiers leases. 

F-84 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
   
 
  
 
 
   
 
  
 
 
   
 
 
  
 
 
   
 
 
 
   
 
 
  
 
 
   
 
  
  
  
 
 
   
 
  
   
   
 
  
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

(ii)        Electricity 

The Company has entered into long-term contracts with electric power providers. As of December 31, 2010, the main amounts 
regarding this type of contracts are presented as follows: 

2011 
2012 
2013 
2014 
2015 

Total 

377,530
111,168
85,379
83,625
80,555

738,257

Electric power expenses for the years ended December 31, 2010, 2009 and 2008 were R$  531,661, R$ 485,766 and 
R$ 459,880, respectively. 

25          Agreement with the Municipality of São Paulo 

On November 14, 2007, the Company and the Municipality of São Paulo (the Parties) entered into an Agreement to 
establish the conditions that ensure the stability in the provision of water supply and sewage services, and environmental 
utility services in the city of São Paulo, the main provisions of which are as follows: 

(a)  the Parties made the commitment to take basic sanitation and environmental actions, complementary to the actions of the 

Municipality of São Paulo, by investing in the deployment and continuity of programs such as: Programa Córrego Limpo 
(Clean River Program) and Programa de Uso Racional da Água - PURA (Rational Water Use Program), the purpose of 
which is to ensure a decrease in water consumption by City government units, ensuring water supply to and the quality of 
living of the population;  

(b)  starting November 14, 2007, all the amounts paid by the Municipality of São Paulo to SABESP, referring to consumption 

by City departments, agencies, and foundations, net of taxes, will be used in basic sanitation and environmental actions in 
the municipality; and 

(c)   the Municipality is  committed to restart the payment of consumption bills issued by SABESP, starting from November 14, 

2007. 

On June 23, 2010, the Company entered into an agreement with the State of São Paulo and the Municipality of São Paulo, 
approved by the Regulatory agency of Sanitation and Energy of the State of São Paulo - ARSESP, to regulate the provision 
of water and sewage services in the city of São Paulo for a 30-year period, which is extendable for an another 30-year 
period. The main terms of the agreement are as follow: 

1.       The State and the Municipality of São Paulo grant to SABESP the right to explore the sanitation service in the capital of 
the State of São Paulo, which consists of the obligation to such provide service and charge the respective tariff for this 
service; 

2.       The State and the Municipality sets forth ARSESP as the  agency responsible for regulating the tariff, controlling and 

monitoring the services; 

3.       The evaluation model of the  contract was the discounted cash flow which considered the financial and economic 

sustainability of the operation; 

4.       All operational costs, taxes, investments and the opportunity cost of the investees and the creditors of SABESP were 

considered in the cash flow analysis; 

F-85 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
 
Companhia de Saneamento Básico  
do Estado de São Paulo - SABESP 

Notes to the Consolidated Financial Statements  
Amounts in thousands of reais, unless otherwise indicated 

5.    The estimated investments established in the agreement comply with the minimum of 13% of the gross revenue from the 

municipality of São Paulo, net of the taxes on revenues; The estimated investments is already considered in the investment 
plan of the Company; 

6.    The payment related to the Municipal Fund of Environmental Sanitation and Infrastructure to be applied in the sanitation 
service within the municipality must be recovered through the tariffs charges. Such payment represents 7.5% of the total 
revenue from the municipality of São Paulo, net of the taxes on revenue; 

7.    The opportunity cost of the investees and the creditors was established by the Weighted Average Cost of Capital (WACC) 

methodology. The WACC was the interest rate used to discount the cash flow of the operation; 

8.    The agreement considers the recovery of the assets in operation, evaluated by external specialists or by historical costs 
plus monetary indexation, to be defined by ARSESP. There should be no residual amount of the assets at the end of the 
contract. 

The agreement represents approximately 54.66% of the total revenue of the Company.   

25          Subsequent event 

13th issue of debentures 

On January 11, 2011, the Company registered the 13th issue of simple debentures, nonconvertible, in a unique series with public 
distribution and strict efforts according to Brazilian Securities and Exchange Commission (CVM), instruction nº 476. 

Issue date:   January 11, 2011 
Series: Unique 
Total amount: R$ 600.000 thousand 
Quantity: 60 
Unitary amount: R$ 10.000 thousand 
Payment: semi-annually 
Maturity date:   August 29, 2012 
Repayment: Partial or total, any time 
Interest:  1st period: January 11, 2011 to February 26, 2011 = 0.65% 
                    2nd period: February 26, 2011 to August 30, 2011 = 0.75% 
                    3rd period: August 30, 2011 to March 1, 2012 = 0.85% 
                    4th period: March 1, 2012 to August 29, 2012 = 1.25% 

The amount obtained in the 13th issue of debentures was utilized to repay the 60 promissory notes with maturity date on 
February 26, 2011. 

Japan International Cooperation Agency - JICA 

In February 2011, the Company signed an agreement with JICA as a complement of the Environmental Recovery Program of 
the Santos Metropolitan Region, totalling US$ 190.0 million. The agreement last 18 years and the interest rate vary from 1.8% 
to 2.5% per annum. 

*          *          * 
F-86