Berlanga de Duero Wastewater Treatment Plant - Castilla y León, Spain

The Berlanga de Duero wastewater treatment plant is located in the municipality of Berlanga de Duero, in the province of Soria, Castilla y León, Spain. The plant serves a population of 4,133, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant operates with secondary treatment, which is the minimum required by the EU UWWTD for freshwater discharges from agglomerations of this size. The designed capacity of 4,133 population equivalents aligns with the population served, indicating adequate sizing for current loads. The treated effluent is discharged into the local water environment, ultimately contributing to the Duero River basin. The Duero River flows westward through Spain and into Portugal, emptying into the Atlantic Ocean at Porto. The plant plays a role in protecting the water quality of the Duero basin, which supports diverse aquatic life and agricultural uses.

The plant discharges into the Duero River basin, which drains a large area of northern Spain and Portugal before reaching the Atlantic Ocean. The Duero River and its tributaries support important ecosystems, including riparian habitats and migratory fish species. The secondary treatment provided helps reduce organic pollution and protect downstream water quality.