Companhia de Saneamento Basico-Sabesp : ARSESP Discloses Detailed Methodology for SABESP's Tariff Revision Process

SAO PAULO, Jan. 20, 2012 /PRNewswire/ -- Companhia de Saneamento Basico do Estado de Sao Paulo - SABESP (BM&FBovespa: SBSP3; NYSE: SBS), one of the largest water and sewage service providers in the world based on number of customers, hereby informs its shareholders and the market in general that the Sao Paulo State Sanitation and Energy Regulatory Agency (ARSESP) disclosed the Detailed Methodology for SABESP's Tariff Revision Process on January 17, 2012 (Technical Note RTS/01/2012).

To access the document*, please, click here, or go to the Company's website www.sabesp.com.br.

*the document is only available in Portuguese; the English version will be available shortly.

Sincerely,

Capital Markets and Investor Relations

For more information, please contact:
Mario Arruda Sampaio
Tel. [phone]
E-mail:. [e-mail]

Angela Airoldi
Tel. [phone]
E-mail: [e-mail]

SOURCE SABESP