ETE 02 SUL Wastewater Treatment Plant, Marialva, Paraná, Brazil

ETE 02 SUL is a wastewater treatment plant located in Marialva, within the state of Paraná, Brazil. It serves a population of around 161,532 people, classifying it as a large agglomeration under Brazilian regulatory frameworks. The plant is situated inland, away from coastal areas, and its operations are subject to Brazil's environmental standards. Plants of this scale in Brazil are typically required to meet secondary treatment standards under the National Environment Council (CONAMA) resolutions. The regulatory framework emphasizes the protection of water resources through discharge permits and effluent quality monitoring. The plant's capacity and operational status are managed by local authorities to ensure compliance with these standards. The treated effluent from ETE 02 SUL is discharged into local water bodies that are part of the Paraná River basin, one of South America's major river systems. The basin supports diverse aquatic ecosystems and is vital for agriculture, industry, and drinking water supply downstream. Proper treatment helps mitigate nutrient pollution and protects the ecological health of the receiving waters.

The plant discharges into the Paraná River basin, which flows through southern Brazil and eventually into the Río de la Plata estuary. The basin is ecologically significant, supporting diverse fish species and wetlands. Effective wastewater treatment is crucial to prevent eutrophication and maintain water quality for downstream communities and ecosystems.