ETE Eldorado SP - Secondary Wastewater Treatment Plant in Eldorado, São Paulo

ETE Eldorado SP is a municipal wastewater treatment plant located in Eldorado, within the state of São Paulo, Brazil. The facility serves a population of approximately 5,752 residents, classifying it as a small-scale treatment operation in the region. The plant employs secondary treatment processes, which provide biological treatment to reduce organic matter and suspended solids. With a daily discharge volume of 611.93 cubic meters, the facility operates under Brazil's national environmental regulations, which mandate treatment standards for wastewater before release into water bodies. The treated effluent is discharged into local waterways that drain into the Ribeira de Iguape River basin, an ecologically significant region in southeastern Brazil. This area supports diverse aquatic life and is part of the Atlantic Forest biome, making proper wastewater treatment critical for preserving downstream water quality and ecosystem health.

The plant's discharge enters the Ribeira de Iguape River basin, which flows through the Atlantic Forest and ultimately reaches the Atlantic Ocean near Iguape. This watershed is ecologically sensitive, supporting diverse aquatic species and providing habitat for migratory fish. Effective treatment helps protect downstream water quality and the region's rich biodiversity.