ETE SUL VALPARAISO Wastewater Treatment Plant, Valparaíso, São Paulo

ETE SUL VALPARAISO is a wastewater treatment plant located in Valparaíso, within the state of São Paulo, Brazil. The plant serves a population of about 10,627 people, placing it in the small to medium agglomeration category. It is situated in the interior of São Paulo state, away from the coast. As a Brazilian wastewater treatment plant, it operates under the national regulatory framework established by the National Environment Council (CONAMA) and the Ministry of Cities. For agglomerations of this size, secondary treatment is typically required to meet effluent standards. The plant discharges treated wastewater into local water bodies that are part of the Paraná River basin. The Paraná River system is one of the most important in South America, flowing through Brazil, Paraguay, and Argentina before reaching the Río de la Plata estuary. The plant's operations contribute to protecting downstream water quality and aquatic ecosystems.

The plant is located in the interior of São Paulo state, within the Paraná River basin. Treated effluent likely flows into tributaries of the Paraná River, which eventually drains into the Río de la Plata estuary in Argentina. The region supports diverse aquatic life and is important for water supply and agriculture. Proper treatment helps maintain water quality in this ecologically sensitive basin.