ETE Estrela d'Oeste Bacia 2 - Wastewater Treatment Plant in Estrela d'Oeste, São Paulo

ETE Estrela d'Oeste Bacia 2 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 approximately 6,000 residents, placing it in the small agglomeration category. It is situated in the southeastern region of Brazil, an area characterized by a tropical climate and significant agricultural activity. The plant operates under Brazil's regulatory framework, which includes CONAMA resolutions and state-level environmental agencies. For small agglomerations, secondary treatment is typically required to protect water quality. The plant's designed capacity is 1.00 (likely in liters per second or similar unit), indicating a modest scale appropriate for the community served. The treated effluent is discharged into local water bodies that drain into the Paraná River basin, one of the most important river systems in South America. The downstream environment supports diverse aquatic life and is used for irrigation and water supply. Proper treatment at this plant helps maintain the ecological health of the receiving waters and prevents nutrient pollution in the broader basin.

The plant discharges into local streams that are part of the Paraná River basin, which flows into the Río de la Plata estuary. This watershed supports important agricultural activities and provides habitat for fish species such as the dourado and pacu. The region's tropical climate means high rainfall can lead to runoff, making effective wastewater treatment critical to prevent eutrophication and protect downstream water quality.