ETE JALES BACIA 1 Wastewater Treatment Plant, Jales, São Paulo, Brazil

ETE JALES BACIA 1 is a municipal wastewater treatment plant located in Jales, a city in the state of São Paulo, Brazil. The plant serves a population of approximately 22,658 residents, placing it in the medium-sized agglomeration category for Brazilian wastewater infrastructure. Brazil's wastewater treatment facilities are regulated under the National Environmental Council (CONAMA) resolutions and the National Water Resources Policy. For plants serving populations over 20,000, secondary treatment is typically required to meet effluent standards. The plant's designed capacity is 1.00 volume unit, indicating its scale relative to the served population. The treated effluent from ETE JALES BACIA 1 is discharged into local water bodies that drain into the Paraná River basin, one of South America's major river systems. This basin supports diverse aquatic ecosystems and provides water for agriculture, industry, and drinking water downstream. Proper treatment is essential to protect water quality in this ecologically and economically important region.

The plant discharges into streams that flow into the Paraná River basin, which ultimately reaches the Río de la Plata estuary. This watershed supports rich biodiversity, including migratory fish species and riparian forests. The region's seasonal rainfall patterns can affect dilution capacity, making consistent treatment important for maintaining downstream water quality.