Companhia de Saneamento Basico do Estado de Sao Paulo. 

Companhia de Saneamento Básico do Estado de São Paulo - SABESP provides basic and environmental sanitation services in the São Paulo State, Brazil. The company supplies treated water and sewage services to residential, commercial, and industrial private customers, as well as public. As of December 31, 2023, it provided water services through 10.3 million water connections; and sewage services through 8.8 million sewage connections in 376 municipalities of the São Paulo State. The company was founded in 1954 and is headquartered in São Paulo, Brazil.