ETE Elisiário - Secondary Wastewater Treatment Plant in Elisiário, São Paulo

ETE Elisiário is a municipal wastewater treatment plant located in Elisiário, a small town in the state of São Paulo, Brazil. The plant serves a population of approximately 2,932 residents, reflecting its role in managing domestic wastewater for the local community. The plant provides secondary treatment, which is the standard biological treatment required under Brazilian regulations for municipalities of this size. Secondary treatment effectively removes organic matter and suspended solids, ensuring the effluent meets basic environmental quality standards before discharge. The treated effluent is discharged into local water bodies that eventually 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 and drinking water downstream. The plant's operation helps protect these water resources from untreated sewage pollution.

The plant discharges into local streams that flow into the Paraná River basin, a vast watershed that drains into the Río de la Plata estuary. The region's aquatic ecosystems support diverse fish species and provide critical habitat for migratory birds. Protecting water quality in this basin is essential for maintaining ecological balance and supporting downstream communities.