COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO – SABESP
PUBLICLY HELD COMPANY
Corporate Taxpayer’s ID (CNPJ): 43.776.517/0001-80
NOTICE TO THE MARKET
Companhia de Saneamento Básico do Estado de São Paulo – Sabesp, pursuant to article 12 of
CVM Instruction 358/02, as amended, hereby informs its shareholders and the market in
general that on October 8, 2015, it has received the attached letter from Brandes Investment
Partners, L.P., stating that, on October 7, 2015, it had increased its interest in Sabesp to 8.96%
of its common shares.
São Paulo, October 9, 2015.
Rui de Britto Álvares Affonso
Chief Financial Officer and Investor Relations Officer