SKA Asselfingen Wastewater Treatment Plant, Asselfingen, Baden-Württemberg

SKA Asselfingen is an advanced wastewater treatment plant located in Asselfingen, a municipality in the Alb-Donau-Kreis district of Baden-Württemberg, Germany. The plant serves a population of approximately 2,550 residents, with a designed capacity of 2,500 m³/day and an actual discharge volume of 645.34 m³/day, indicating it operates well below its capacity. As an advanced treatment facility, SKA Asselfingen goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive catchment areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (2,550 PE), the directive requires secondary treatment, but the plant's advanced level suggests it may be in a sensitive area or subject to stricter local regulations. The treated effluent is discharged into a local watercourse that flows into the Danube River basin, ultimately reaching the Black Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from nutrient pollution and organic load.

The plant discharges into a tributary of the Danube River, which flows through the Swabian Alb region before joining the Danube and eventually the Black Sea. The local watershed supports diverse aquatic life and is part of a larger river system that is ecologically sensitive to nutrient enrichment. Advanced treatment helps minimize eutrophication risks in downstream lakes and coastal areas.