Overview
COLUNGA wastewater treatment plant serves 10,500 people in Colunga, Asturias, Spain. Located within 50 km of the coast, it discharges into the local watershed under EU regulatory oversight.
COLUNGA is a wastewater treatment plant serving the municipality of Colunga in the Asturias region of northern Spain. The facility handles wastewater from approximately 10,500 residents, placing it in the small-to-medium agglomeration category under EU classification. Its location near the Cantabrian Sea influences its operational and environmental context. As a Spanish plant, COLUNGA operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size discharging into coastal or estuarine waters. The plant's designed capacity is 1.00 million cubic meters per year, reflecting its role in managing local domestic wastewater. Compliance with national transposition of the directive ensures appropriate treatment standards. The treated effluent from COLUNGA ultimately reaches the Cantabrian Sea via local streams and rivers. The Asturian coast is ecologically sensitive, supporting diverse marine life and serving as a migratory corridor for seabirds. Proper treatment at this plant helps protect coastal water quality and the broader marine ecosystem of the Bay of Biscay.
Environmental context
COLUNGA discharges into the Cantabrian Sea, part of the Bay of Biscay, via small coastal streams in the Asturias region. The receiving waters support diverse marine habitats, including rocky shores and kelp forests, and are important for fisheries and migratory seabirds. The plant's proximity to the coast (within 50 km) underscores the need for effective treatment to prevent nutrient enrichment and protect sensitive coastal ecosystems.
Frequently asked questions
The COLUNGA plant is located on the Carretera Colunga - Venta del Pobre por Lastres, in El Ferreru, Colunga, Asturias, Spain.
The plant serves approximately 10,500 residents in the municipality of Colunga and surrounding areas.
Treated wastewater from COLUNGA is discharged into local streams that flow into the Cantabrian Sea, part of the Bay of Biscay.
As a plant serving around 10,500 people, COLUNGA is classified as a small-to-medium agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges into coastal waters.
In Spain, plants of this scale typically provide secondary biological treatment, as mandated by the EU directive for coastal discharges, to reduce organic matter and nutrients before release.
Nearby plants