SKA Westerheim Wastewater Treatment Plant, Westerheim, Baden-Württemberg

SKA Westerheim is an advanced wastewater treatment plant located in Westerheim, a municipality in the Alb-Donau-Kreis district of Baden-Württemberg, Germany. The plant serves a population of approximately 4,150 residents, reflecting its role as a medium-sized facility within the region's wastewater infrastructure. As an advanced treatment plant, SKA Westerheim goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for facilities in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant has a designed capacity of 5,500 m³/day and currently treats an average daily flow of about 690 m³, indicating ample reserve capacity for future growth. The treated effluent is discharged into local streams that eventually feed into the Danube River basin, which flows into the Black Sea. This downstream connection underscores the plant's role in protecting the water quality of the Danube ecosystem, a vital corridor for aquatic biodiversity and migratory species.

SKA Westerheim discharges treated wastewater into small watercourses in the Swabian Alb region, which are part of the Danube River basin. The Danube ultimately flows into the Black Sea, making the plant's advanced treatment crucial for reducing nutrient loads that could contribute to eutrophication downstream. The surrounding watershed supports diverse aquatic life and is an important ecological corridor in central Europe.