Companhia de Saneamento Básico do Estado de São Paulo S.A. (Sabesp) is a mixed capital company that was founded in 1973 and is currently responsible for supplying water and collecting and treating sewage in the 367 municipalities of São Paulo state. Sabesp is responsible for around 27% of the investments in basic sanitation in Brazil. Between 2017 and 2021, it plans to invest approximately R$13.9 billion, focused on expanding water availability and security, without jeopardizing the improvements to sewage collection and treatment ratios. In partnership with private companies, Sabesp also provides water and sewage services in another four municipalities, Mogi-Mirim, Castilho, Andradina and Mairinque.