BEMBIBRE Wastewater Treatment Plant, Bembibre, Castilla y León, Spain

The BEMBIBRE wastewater treatment plant is located in Bembibre, a town in the El Bierzo region of León, within the autonomous community of Castilla y León, Spain. The plant serves a population of approximately 14,100 people, classifying it as a medium agglomeration under EU regulations. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving between 10,000 and 150,000 population equivalents are required to provide secondary treatment, with tertiary treatment mandated if the discharge enters a sensitive area. It operates within Spain's national regulatory framework, which implements the directive through Royal Decree 509/1996. The treated effluent is discharged into local watercourses that eventually drain into the Miño River basin, which flows into the Atlantic Ocean. The plant plays a key role in protecting the region's water quality and supporting the ecological health of the downstream environment.

The BEMBIBRE plant discharges into the local watershed, which is part of the Miño River basin. The Miño River flows through Galicia and forms part of the border with Portugal before reaching the Atlantic Ocean. The downstream environment supports diverse aquatic life and is important for regional biodiversity, including migratory fish species. The plant's operation helps maintain water quality in this ecologically sensitive basin.