ETE JACI Wastewater Treatment Plant, Jaci, São Paulo, Brazil

ETE JACI is a wastewater treatment plant located in Jaci, a municipality in the state of São Paulo, Brazil. The plant serves a population of about 2,419 people, reflecting a small-scale municipal facility typical of inland communities in the region. The plant provides secondary treatment, which is the standard level required under Brazilian regulations for communities of this size. Secondary treatment removes biodegradable organic matter and suspended solids, ensuring that the effluent meets basic environmental standards before discharge. The treated wastewater is discharged into local water bodies that eventually drain into the Paraná River basin, a major hydrological system in South America. The plant plays a key role in protecting downstream water quality and supporting the ecological health of the region's rivers and streams.

The plant's discharge enters local waterways that flow into the Paraná River basin, which ultimately reaches the Río de la Plata estuary. This basin supports diverse aquatic life and is important for regional water supply. The secondary treatment helps reduce nutrient and organic pollution, mitigating eutrophication risks in downstream reservoirs and rivers.