ETE 01 Bandeirantes do Sul Wastewater Treatment Plant, Paiçandu, Paraná

ETE 01 Bandeirantes do Sul is a municipal wastewater treatment plant located in Paiçandu, within the state of Paraná, Brazil. The facility serves a population of approximately 20,449 residents, classifying it as a medium-sized treatment plant under Brazilian regulatory frameworks. Brazil's wastewater treatment standards are governed by CONAMA Resolution 430/2011 and state-level environmental agencies. For plants serving populations around 20,000, secondary treatment is typically required to meet effluent quality standards. The plant's operational context aligns with these national requirements, ensuring compliance with discharge limits. The treated effluent from ETE 01 Bandeirantes do Sul is discharged into local water bodies that eventually flow 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 communities downstream.

The plant discharges into the Paraná River basin, which drains into the Río de la Plata estuary. This watershed supports ecologically sensitive areas, including floodplains and wetlands that provide habitat for migratory birds and aquatic species. Proper treatment is critical to prevent nutrient pollution and protect downstream water quality.