SAO PAULO, March 22, 2013 /PRNewswire/ -- Companhia de Saneamento Basico do Estado de Sao Paulo - SABESP (BM&FBovespa: SBSP3; NYSE: SBS), informs the Shareholders that the Board of Directors resolved on, pursuant to item XI of article 13, and paragraph 1 of article 28 of the Company's Bylaws, the payment of dividends in the form of interest on own capital related to the period from January to December 2012, to the Shareholders registered as such on March 28, 2013. The dividends as interest on own capital, totaling R$ 534,276,880.94 corresponding to R$ 2.345 per common share will be paid no later than 60 days after the 2013 Annual Shareholders' Meeting. Income tax shall be withheld from payment of dividends as interest on own capital, pursuant to the laws in force, except for the immune or exempt shareholders proving such condition until April 22, 2013, and corresponding documents shall be sent to the Company's headquarters. Referring to the entities of Supplementary Private Pension, Insurance Companies and Fapi, such proof shall occur by means of Declaration, a model of which is available at the Investors Area, in the item Information to Shareholders on the website www.sabesp.com.br. The aforementioned interest on own capital will be computed in the calculation of the mandatory minimum dividends, as provided for in the caput of Article 28 of the Company's Bylaws, pursuant to article 9, paragraph 7, of Law 9,249/95. The shareholders will have their credits available on the initial date of payment of such right, as set forth in above item I, in accordance with their checking account and domicile provided to Itau Unibanco S.A The shares now are traded ex-interest from April 1, 2013. Further information may be obtained at any of Itau Unibanco S.A.'s branches, which are specialized in assisting shareholders, during banking hours.