ETE NILSON NEVES Wastewater Treatment Plant, Paranaguá, Paraná, Brazil

ETE NILSON NEVES is a wastewater treatment facility located in Paranaguá, a coastal city in the state of Paraná, Brazil. The plant serves a population of approximately 4,874 residents, placing it in the small agglomeration category under Brazilian wastewater management frameworks. The plant operates under Brazil's national environmental regulations, which include the National Environmental Council (CONAMA) resolutions and state-level licensing by the Environmental Institute of Paraná (IAP). For small communities, typical treatment systems include stabilization ponds, anaerobic reactors, or compact systems, depending on local conditions and discharge requirements. The plant's proximity to the coast (within 50 km) means its treated effluent likely discharges into a water body that drains to the Atlantic Ocean. The region's watershed includes the Paranaguá Estuarine Complex, a vital ecosystem supporting mangroves, fisheries, and biodiversity. Proper treatment is essential to protect these sensitive coastal waters from nutrient pollution and pathogens.

The plant is situated in the coastal region of Paraná, near the Paranaguá Estuarine Complex, which is one of the largest and most productive estuaries in southern Brazil. This complex drains into the Atlantic Ocean and supports extensive mangrove forests, seagrass beds, and diverse aquatic life. The estuary is a critical nursery for fish and crustaceans, and its health depends on controlling nutrient and pollutant loads from upstream sources, including treated wastewater.