Companhia de Saneamento Básico do Estado de São Paulo - Sabesp ('Company' or 'Sabesp'), pursuant to the provisions of Article 157, Paragraph 4 of Law No. 6.404/76 and the provisions of CVM Instruction No. 358/02, hereby informs its shareholders and the market in general that on October 06, 2017, the São Paulo State Energy and Sanitation Regulatory Agency (ARSESP) published a Final Technical Note (Nota Técnica Final NT/F/004/2017) and a Detailed Report for the Initial Stage of Sabesp's 2Ordinary Tariff Revision, authorizing the Company to apply a tariff repositioning index of 7.8888% to its current tariffs.

ARSESP also approved the Resolution with the new tariff charts, which will be published in the São Paulo State Official Gazette (Diário Oficial do Estado de São Paulo) on October 10, 2017 and will become effective 30 days after its publication.

The full versions of the Technical Note NT/F/004/2017 and the Detailed Report are available at ARSESP's and Sabesp's Investor Relations website.

The tariff charts will be available on Sabesp's website and at the Company's customer service centers.

São Paulo, October 6, 2017.

Rui de Britto Álvares Affonso

Chief Financial Officer and Investor Relations Officer

SABESP - Companhia de Saneamento Básico do Estado de São Paulo published this content on 06 October 2017 and is solely responsible for the information contained herein.
Distributed by Public, unedited and unaltered, on 07 October 2017 01:49:00 UTC.

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