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Indicate by check mark whether the registrant by furnishing the
information contained in this Form is also thereby furnishing the
information to the Commission pursuant to Rule 12g3-2(b) under
the Securities Exchange Act of 1934.

Yes ______ No ___X___

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COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO – SABESP

Publicly-Held Company
Corporate Taxpayer’s ID (CNPJ) 43.776.517/0001 -80
Corporate Registry ID (NIRE) 35.3000.1683 -1
SUBSCRIBED AND PAID-UP CAPITAL: R$6,203,688,565.23

EXTRAORDINARY GENERAL MEETING
CALL

The shareholders of Companhia de Saneamento Básico do Estado de São Paulo – SABESP are invited, in compliance with its Bylaws, to meet at the Extraordinary General Meeting to be held at its headquarters at Rua Costa Carvalho, nº 300, in the City and State of São Paulo, at 3:00 p.m., on October 29, 2009, to resolve on the following agenda:

I. Election of a member of the Board of Directors;

II. Authorization for holding and establishing the conditions of three (3) Private Issues of Simple Debentures of the Company, secured, non-convertible into shares, for subscription by Banco Nacional de Desenvolvimento Econômico e Social – BNDES (“BNDES”) and BNDES Participações S.A. – BNDESPAR, in the total amount of eight hundred, twenty-six million and one hundred and ten thousand reais (R$826,110,000.00), each issue in the amount of two hundred, seventy-five million and three hundred and seventy thousand reais (R$275,370,000.00) . Up to three hundred (300) debentures shall be issued, with an Unit Face Value of two million, seven hundred and fifty-three thousand and seven hundred reais (R$2,753,700.00);

III. Establishment of the conditions applicable to the first of the three (3) Issues of Debentures pursuant to item (II) above;

IV. Delegation of powers to the Company’s Board of Directors to resolve on the establishment and possible amendments of the conditions addressed by items VI to VIII of Article 59 of Law 6,404/76, related to the three (3) Issues of debentures, pursuant to item (II) above, as well as on the opportunity of the Issues;

V. Authorizing the Company to practice any and all acts, pursuant to the legal and statutory provisions, related to the three (3) Issues of debentures, particularly, the execution of the “Commitment Agreement for Subscription of Simple Debentures, in Private Issues” and of the “Fiduciary Assignment Agreement of Receivables and Other Covenants and of the Issue Deeds”.

The documents related to the issues to be resolved at the General Meeting will be available to shareholders at the Company’s headquarters.

São Paulo, September 24, 2009.

Dilma Seli Pena
Chairwoman of the Board of Directors

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This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.

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