EDAR DEL RIO ESQUEIRO - Secondary Wastewater Treatment Plant in Cudillero, Asturias, Spain

EDAR DEL RIO ESQUEIRO is a municipal wastewater treatment plant located in Cudillero, within the autonomous community of Asturias, Spain. The plant serves a population of approximately 2,000 residents, classifying it as a small agglomeration under Spanish and EU regulations. Its location near the Cantabrian coast places it in a sensitive coastal environment. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into coastal waters. With a designed capacity of 6,771 cubic meters per day and an average discharge volume of about 998 cubic meters per day, the plant operates well below its capacity. The treated effluent is discharged into the Cantabrian Sea, part of the Atlantic Ocean. This coastal region supports diverse marine life and is important for local fisheries and tourism. The plant's proximity to the coast underscores the need for effective treatment to minimize environmental impact on the sensitive marine environment.

The plant discharges into the Cantabrian Sea, a coastal area of the Atlantic Ocean off northern Spain. This region features a rugged coastline with estuaries and rocky shores that support diverse marine ecosystems, including fish, seabirds, and benthic communities. The local watershed drains from the Asturian mountains to the sea, and the plant's effluent contributes to the overall nutrient load in coastal waters. Effective secondary treatment helps protect water quality for recreational use and marine life.