ETE Cidreira Wastewater Treatment Plant - Cidreira, Rio Grande do Sul, Brazil

ETE Cidreira is a municipal wastewater treatment plant located in Cidreira, a coastal city in the state of Rio Grande do Sul, Brazil. The plant serves a small population of 977 residents, reflecting the scale of a small coastal community. It operates under Brazil's national environmental regulations, which set standards for effluent quality and discharge. The plant provides secondary treatment, a standard level that removes organic matter and suspended solids. With a discharge volume of 165.23 m³/day, it manages the wastewater generated by the local population. As a facility in a coastal area, it is subject to additional oversight to protect marine environments. The treated effluent is discharged into the Atlantic Ocean via local drainage, given the plant's proximity to the coast. The coastal waters of Rio Grande do Sul support diverse marine life and are important for local fisheries and tourism. Proper treatment helps minimize nutrient and pollutant loads that could affect coastal water quality and ecosystems.

The plant discharges into the Atlantic Ocean along the coast of Rio Grande do Sul, a region characterized by sandy beaches and coastal lagoons. The nearby Lagoa dos Patos and Lagoa Mirim are major coastal lagoons that connect to the ocean. The area supports important fish nurseries and migratory bird habitats. Effective wastewater treatment is crucial to prevent eutrophication and protect the sensitive coastal ecosystem.