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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: January 22, 2013 9:00 A.M.
Form: F-6
CIK: 0001170858
Company Name: COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP
File Number: 333-185993