In another three municipalities of the State of São Paulo, Sabesp holds interest in Águas de Castilho S.A., Águas de Andradina S.A. and Saneaqua Mairinque S.A., which provide water and sewage services and, in the municipality of Mogi Mirim (SP), it it holds interest in SESAMM – Serviços de Saneamento de Mogi Mirim S.A., which is engaged in the modernization, implementation and management of the sewage treatment system.