ETE Ancora Wastewater Treatment Plant, Rio das Ostras, Rio de Janeiro

ETE Ancora is a wastewater treatment facility located in the Village Rio das Ostras, within the municipality of Rio das Ostras, Rio de Janeiro state, Brazil. The plant serves a small population of 1,219 residents, reflecting its role in local sanitation infrastructure for a coastal community in the Região Sudeste region. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. This level of treatment is particularly relevant for facilities near sensitive coastal environments. Under Brazilian regulations, wastewater treatment plants are subject to federal CONAMA resolutions and state-level environmental licensing, which set discharge standards based on the receiving water body's classification. The plant is located within 10 km of the Atlantic coast, meaning its treated effluent likely reaches coastal waters via local drainage. The receiving water body is not named, but the area drains into the Atlantic Ocean, supporting marine ecosystems and coastal habitats. Proper treatment is critical to prevent nutrient loading and protect water quality in this region, which is known for its beaches and tourism.

The plant's treated effluent likely flows into local watercourses that drain into the Atlantic Ocean near Rio das Ostras. This coastal area supports diverse marine life, including fish and crustaceans, and is important for local fisheries and recreation. Advanced treatment helps reduce nutrient and pathogen loads, safeguarding coastal water quality and ecosystem health.