ETE COQUEIRO Wastewater Treatment Plant, Belém, Pará, Brazil

ETE COQUEIRO is a wastewater treatment plant located in the Cabanagem neighborhood of Belém, the capital of Pará state in northern Brazil. The plant serves a population of approximately 63,071 people, making it a medium-sized facility within the region's urban sanitation infrastructure. Brazil's wastewater treatment standards are governed by federal regulations under the National Environment Council (CONAMA) and state-level environmental agencies. For plants of this scale, secondary treatment is typically required to reduce organic load and pathogens before discharge. The treated effluent from ETE COQUEIRO ultimately drains into the Amazon River basin, one of the world's largest and most biodiverse freshwater systems. The receiving waters flow through the Amazon estuary into the Atlantic Ocean, supporting extensive floodplain forests, aquatic life, and fisheries. Proper treatment is critical to protect downstream ecosystems and communities that rely on these waters.

ETE COQUEIRO discharges into the Amazon River basin, which drains into the Atlantic Ocean via the Amazon estuary. This region supports diverse aquatic habitats, including flooded forests and mangroves, and is a critical migratory corridor for fish and birds. The plant's location within 50 km of the coast means its effluent can influence coastal water quality, particularly in the nutrient-sensitive estuarine zone.