ETE PRATANIA Wastewater Treatment Plant, Pratânia, São Paulo, Brazil

ETE PRATANIA is a municipal wastewater treatment plant located in Pratânia, a small city in the state of São Paulo, Brazil. The plant serves a population of approximately 3,772 people, reflecting its role in managing domestic wastewater for this inland community. The plant provides secondary treatment, which is the standard biological treatment process required for most municipal wastewater in Brazil. Under Brazilian regulations (CONAMA resolutions and state-level environmental licensing), secondary treatment is typically mandated for agglomerations of this size to reduce organic load and suspended solids before discharge. The treated effluent from ETE PRATANIA is discharged into local water bodies that ultimately drain into the Paraná River basin, one of South America's major river systems. The plant's operation helps protect downstream water quality and supports the ecological health of the region's freshwater resources.

The plant discharges treated wastewater into local streams that are part of the Paraná River basin, which flows into the Río de la Plata estuary. The region's watershed supports diverse aquatic life and is important for agricultural and urban water supplies. Secondary treatment reduces organic pollutants, helping to maintain water quality in downstream ecosystems.