ETE DUTRA Wastewater Treatment Plant, Gramado, Rio Grande do Sul

ETE DUTRA is a wastewater treatment plant located in the Dutra neighborhood of Gramado, a city in the state of Rio Grande do Sul, Brazil. The plant serves a population of 882 and discharges 143.81 cubic meters of treated wastewater daily. It operates under Brazil's national environmental regulations, which require secondary treatment for municipal wastewater to protect water quality. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. For a small agglomeration of fewer than 1,000 people, this level of treatment is appropriate and aligns with typical requirements for inland communities in Brazil. Secondary treatment is sufficient to meet discharge standards for its scale. The treated effluent from ETE DUTRA is discharged into local water bodies that drain into the Rio dos Sinos basin, eventually reaching the Atlantic Ocean via the Laguna dos Patos system. This watershed supports diverse aquatic life and is important for regional water supply and agriculture. The plant plays a key role in protecting downstream ecosystems from untreated sewage.

ETE DUTRA discharges into the Rio dos Sinos basin, which flows into the Laguna dos Patos, a large coastal lagoon in southern Brazil, and ultimately the Atlantic Ocean. The Rio dos Sinos watershed is ecologically sensitive, supporting diverse fish species and serving as a migratory corridor for aquatic life. The plant's secondary treatment helps reduce organic pollution and nutrient loading, protecting downstream water quality in this important basin.