SABESP Files its 20-F with the SEC

                      SABESP Files its 20-F with the SEC

PR Newswire

SAO PAULO, May 15, 2013

SAO PAULO, May 15, 2013 /PRNewswire/ -- Companhia de Saneamento Basico do
Estado de Sao Paulo - SABESP (BM&FBovespa: SBSP3; NYSE: SBS), one of the
largest water and sewage service provider in the world based on the number of
customers, hereby announces that on May 15, 2013, filed its annual report on
Form 20-F for the fiscal year ended December 31, 2012 (the "2012 Annual
Report") with the Securities and Exchange Commission (the "SEC"). The 2012
Annual Report can be accessed by visiting either the SEC's website at
www.sec.gov or the Company's website.

In addition, shareholders may receive a hard copy of the Company's complete
audited financial statements free of charge by requesting a copy within a
reasonable period of time from Investor Relation area located at Rua Costa
Carvalho, 300 – 05429-900 - Sao Paulo - Brasil at +55 (11) 3388-8793 or email:
abairoldi@sabesp.com.br.

IR Contacts:
Mario Arruda Sampaio: (55 11) 3388-8664 (maasampaio@sabesp.com.br)
Angela Beatriz Airoldi: (55 11) 3388-8793 (abairoldi@sabesp.com.br)

SOURCE SABESP

Website: http://www.sabesp.com.br