ETE Estrela d'Oeste Bacia 1 - Secondary Wastewater Treatment in Estrela d'Oeste, São Paulo

ETE Estrela d'Oeste Bacia 1 is a wastewater treatment plant located in Estrela d'Oeste, a municipality in the state of São Paulo, Brazil. The plant serves a population of 799 residents, classifying it as a small-scale facility within the region's sanitation infrastructure. The plant provides secondary treatment, which is the standard biological treatment level required for municipal wastewater in Brazil under national regulations. This process removes organic matter and suspended solids, producing effluent suitable for discharge into surface waters. The plant treats an average daily flow of 315.59 cubic meters, reflecting its capacity to handle the local community's wastewater. The treated effluent is discharged into local water bodies that ultimately 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 human consumption. Proper treatment at this plant helps protect downstream water quality and ecological health in the region.

The plant discharges into streams that flow into the Paraná River basin, which drains into the Río de la Plata estuary. This watershed supports important aquatic habitats and is used for irrigation and drinking water supply. The secondary treatment reduces organic pollution, helping to maintain water quality in the basin's sensitive ecosystems.