ETE Salmourão Wastewater Treatment Plant, Salmourão, São Paulo, Brazil

ETE Salmourão is a municipal wastewater treatment plant located in Salmourão, a small town in the state of São Paulo, Brazil. The plant serves a population of about 4,012 people, reflecting its role in managing domestic wastewater for this community in the southeastern region of the country. The plant provides secondary treatment, which is a standard biological process that removes organic matter and suspended solids. Secondary treatment aligns with typical requirements for small to medium agglomerations in Brazil, where federal regulations such as CONAMA resolutions set effluent quality standards. The plant's discharge volume is reported as 523.95, indicating the scale of its operations. The treated effluent is likely discharged into a local watercourse, contributing to the protection of downstream water bodies in the Paraná River basin. The plant's inland location, over 50 km from the coast, means its discharge affects freshwater ecosystems rather than marine environments. Proper treatment helps safeguard local streams and rivers that eventually drain into the Paraná River, supporting aquatic life and water quality for downstream communities.

The plant discharges into a local watercourse within the Paraná River basin, one of South America's major river systems. The receiving waters support diverse aquatic life and are used for irrigation and drinking water supply downstream. The region's tropical climate and agricultural activities make effective wastewater treatment essential to prevent nutrient pollution and protect freshwater biodiversity.