ETE NOVO NACOES UNIDAS - Secondary Wastewater Treatment Plant in Novo Hamburgo, Brazil

ETE NOVO NACOES UNIDAS is a wastewater treatment plant located in the Santo Afonso neighborhood of Novo Hamburgo, in the state of Rio Grande do Sul, Brazil. The plant serves a small population of 515 residents within the metropolitan region of Porto Alegre, operating under Brazil's national environmental regulations. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a daily discharge volume of 173.00 m³, the facility meets the treatment requirements for small agglomerations in Brazil. The plant's operations are overseen by state environmental agencies, which enforce discharge standards under the National Environmental Council (CONAMA) resolutions. The treated effluent is discharged into local water bodies that drain into the Sinos River basin, a key tributary of the Guaíba River system. This watershed supports diverse aquatic life and provides water for downstream communities. The plant plays a vital role in preventing untreated sewage from entering the region's waterways, contributing to the ecological health of the Guaíba estuary and ultimately the Lagoa dos Patos lagoon.

The plant discharges into the Sinos River basin, which flows into the Guaíba River and then into the Lagoa dos Patos, one of the largest coastal lagoons in South America. This watershed supports diverse aquatic ecosystems and is important for regional biodiversity. The secondary treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in the downstream lagoon environment.