ETE Santa Maria RS - Wastewater Treatment Plant in Santa Maria, Rio Grande do Sul, Brazil

ETE Santa Maria RS is a municipal wastewater treatment plant located in Santa Maria, Rio Grande do Sul, Brazil. The facility serves a population of approximately 174,528 residents, classifying it as a large-scale treatment plant within the region. As part of Brazil's wastewater infrastructure, it plays a key role in managing urban sewage for the city. The plant operates under Brazil's environmental regulatory framework, which includes the National Water Resources Policy (Law 9.433/1997) and CONAMA resolutions that set discharge standards. For a plant of this scale, secondary treatment is typically required to meet effluent quality standards before discharge. The regulatory context ensures compliance with national standards. The treated effluent is discharged into local water bodies that drain into the Jacuí River basin, eventually reaching the Patos Lagoon and the Atlantic Ocean. This downstream chain supports diverse aquatic life and is important for regional water supply and agriculture. The plant's operation helps protect these water resources from untreated sewage pollution.

The plant discharges into the Jacuí River basin, which flows into the Patos Lagoon, one of the largest coastal lagoons in South America, and ultimately the Atlantic Ocean. This watershed supports diverse aquatic ecosystems and is critical for regional water supply, agriculture, and fisheries. The lagoon is ecologically sensitive, providing habitat for migratory birds and fish species.