SKA Freiamt Keppenbach Wastewater Treatment Plant, Sexau, Germany

SKA Freiamt Keppenbach is a municipal wastewater treatment plant located in Sexau, within the Emmendingen district of Baden-Württemberg, Germany. The plant serves a population of approximately 2,800 residents and operates with a designed capacity of 4,200 m³ per day, with an actual discharge volume of 721.3 m³ per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a German facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas. The plant's scale places it in the small agglomeration category, for which secondary treatment is the baseline, but the advanced level indicates a commitment to high effluent quality. The treated wastewater is discharged into local water bodies that drain into the Rhine River basin, ultimately reaching the North Sea. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems, and maintaining the ecological health of the Rhine watershed.

The plant discharges into local streams that flow into the Elz River, a tributary of the Rhine. The Rhine basin is a major European waterway supporting diverse aquatic life and providing drinking water for millions. The advanced treatment helps reduce nutrient loads, protecting downstream ecosystems from eutrophication and maintaining water quality in the Rhine Delta and the North Sea.