ETE RIBEIRAO DO SUL - Secondary Wastewater Treatment Plant in Ribeirão do Sul, São Paulo

ETE RIBEIRAO DO SUL is a municipal wastewater treatment plant located in Vila Salto Grande, Ribeirão do Sul, within the state of São Paulo, Brazil. The plant serves a population of 2,756 residents, classifying it as a small-scale facility in the region. The plant provides secondary treatment, which is the standard level required under Brazilian regulations (CONAMA resolutions) for most inland communities. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant discharges approximately 403.79 cubic meters of treated wastewater per day. The treated effluent is released into local water bodies that drain into the Paranapanema River basin, part of the larger Paraná River system. This watershed supports diverse aquatic life and provides water for agriculture and communities downstream. Proper treatment at this plant helps protect water quality in the region's rivers and reservoirs.

The plant discharges into local streams that flow into the Paranapanema River, a major tributary of the Paraná River basin. This watershed supports diverse aquatic ecosystems and provides water for irrigation and drinking water downstream. The Paranapanema River is ecologically sensitive, hosting fish species and riparian habitats that benefit from controlled nutrient and pollutant loads.