ETE MARTIM DE SA - Caraguatatuba, São Paulo Wastewater Treatment Plant

ETE MARTIM DE SA is a wastewater treatment plant located in Caraguatatuba, a coastal city in the state of São Paulo, Brazil. The plant serves a population of around 19,207 residents, making it a medium-sized facility within the region's sanitation infrastructure. It is situated in the Jardim Caraguá neighborhood, part of the broader Metropolitan Region of Vale do Paraíba e Litoral Norte. As a Brazilian treatment plant, ETE MARTIM DE SA operates under the national regulatory framework established by the Ministry of Cities and state environmental agencies such as CETESB in São Paulo. For agglomerations of this scale, secondary treatment is typically required to meet effluent standards. The plant's designed capacity is 1.00 cubic meters per second, indicating its ability to handle the wastewater generated by the served population. The plant's treated effluent is discharged into local water bodies that ultimately drain into the Atlantic Ocean, given Caraguatatuba's coastal location. The region's watershed includes rivers flowing from the Serra do Mar mountain range to the coast, supporting diverse aquatic ecosystems. Proper treatment at this facility helps protect downstream environments, including mangroves and marine habitats along the northern coast of São Paulo.

The plant is located within 50 kilometers of the Atlantic coast, and its treated effluent likely enters local rivers that drain into the South Atlantic Ocean. The region's watershed includes streams originating from the Serra do Mar, an ecologically sensitive area with high biodiversity. Downstream environments include coastal mangroves and marine ecosystems that rely on good water quality for fisheries and ecological balance.