ETE Costeira Wastewater Treatment Plant, Paranaguá, Paraná, Brazil

ETE Costeira is a municipal wastewater treatment plant located in the Valadares neighborhood of Paranaguá, Paraná, Brazil. The plant serves an estimated population of 34,523 residents, contributing to the sanitation infrastructure of this coastal city in southern Brazil. As a plant in Brazil, ETE Costeira operates under the national regulatory framework established by the National Environment Council (CONAMA) and the Ministry of Cities. For agglomerations serving over 30,000 people, Brazilian regulations typically require secondary treatment to reduce organic load and protect water quality. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the Paranaguá Estuarine Complex. This estuary is ecologically significant, supporting diverse aquatic life including mangroves and fish species. The region's coastal environment is sensitive to nutrient inputs, making effective wastewater treatment important for preserving water quality and marine habitats.

ETE Costeira discharges into the Paranaguá Estuarine Complex, a large subtropical estuary that connects to the Atlantic Ocean. This estuary supports mangroves, seagrass beds, and diverse fish and bird populations. Nutrient loading from wastewater can impact water quality and ecosystem health, making treatment important for preserving this coastal environment.