ETE COREAU - Secondary Wastewater Treatment Plant in Coreaú, Ceará, Brazil

ETE COREAU is a municipal wastewater treatment plant located in Coreaú, a municipality in the state of Ceará, Brazil. The plant serves a population of approximately 4,958 residents, providing secondary-level treatment to manage domestic wastewater from the community. Its location along Rodovia Raimundo Cunha Brito places it within the semi-arid Northeast Region of Brazil, where water resources are particularly valuable. The plant operates with secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Under Brazilian regulations (CONAMA resolutions and state-level environmental laws), secondary treatment is typically required for urban agglomerations of this size. Treated effluent from ETE COREAU likely discharges into local watercourses that drain toward the Atlantic Ocean via the Coreaú River basin. The region's semi-arid climate means that maintaining water quality in receiving streams is critical for downstream ecosystems, including seasonal wetlands and coastal mangroves. Proper treatment helps protect aquatic life and supports water availability for local communities.

The plant's discharge enters the Coreaú River basin, which flows northward to the Atlantic Ocean near the coast of Ceará. This region features intermittent streams and seasonal wetlands that support diverse aquatic species, including fish and migratory birds. The semi-arid climate makes these water bodies particularly sensitive to pollution, as low flows reduce dilution capacity. Downstream, the river meets coastal mangrove ecosystems that serve as nursery habitats for marine life, underscoring the importance of effective secondary treatment.