ETE IVAI Wastewater Treatment Plant, Ivaí, Paraná, Brazil

ETE IVAI is a wastewater treatment plant located in Ivaí, a municipality in the state of Paraná, Brazil. The plant serves a population of approximately 2,734 people, classifying it as a small-scale facility within the region's sanitation infrastructure. The plant provides secondary treatment, which is the standard level required under Brazilian regulations (CONAMA resolutions) for inland water bodies. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local water body within the Paraná basin, which ultimately drains into the Paraná River and then to the Río de la Plata estuary. The plant plays a key role in protecting local water quality and downstream ecosystems, including the Atlantic Forest biome, which is ecologically sensitive and supports diverse aquatic life.

The plant discharges into a tributary of the Paraná River basin, which flows into the Paraná River and eventually reaches the Río de la Plata estuary. The region is part of the Atlantic Forest biome, a biodiversity hotspot. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting downstream aquatic habitats and water quality for communities and wildlife.