ETE IGUAPE Wastewater Treatment Plant, Iguape, São Paulo

ETE IGUAPE is a wastewater treatment plant located in Iguape, a municipality in the state of São Paulo, Brazil. The plant serves a population of about 13,391 residents, placing it in the small-to-medium agglomeration category. It is situated in the Southeast region of Brazil, near the coast. As a Brazilian wastewater facility, ETE IGUAPE operates under the national regulatory framework established by the National Environment Council (CONAMA) and the National Water Agency (ANA). For plants serving populations between 10,000 and 100,000, secondary treatment is typically required to meet effluent standards. The plant's treated effluent discharges into local water bodies that ultimately drain into the Atlantic Ocean. The region is part of the Ribeira de Iguape River basin, an ecologically important area supporting diverse aquatic life and mangrove ecosystems. The proximity to the coast (within 50 km) means that proper treatment is essential to protect coastal water quality and marine habitats.

ETE IGUAPE discharges into the Ribeira de Iguape River basin, which flows into the Atlantic Ocean near Iguape. The downstream environment includes estuarine and mangrove ecosystems that support diverse fish, crustacean, and bird species. These habitats are sensitive to nutrient loading and pollutants, making effective wastewater treatment critical for maintaining ecological balance and water quality in the coastal zone.