SKA Erligheim Wastewater Treatment Plant, Erligheim, Baden-Württemberg

SKA Erligheim is an advanced wastewater treatment plant located in Erligheim, a municipality in the Ludwigsburg district of Baden-Württemberg, Germany. The plant serves a population of approximately 4,450 residents and is designed to handle up to 6,000 cubic meters of wastewater per day, with an actual discharge volume of 812 cubic meters per day. It is situated in the Neckar River basin, which ultimately drains into the Rhine River and the North Sea. As an advanced treatment facility, SKA Erligheim goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, meeting the stringent requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for sensitive areas. The plant's scale places it in the small agglomeration category (under 10,000 population equivalent), for which the directive mandates appropriate treatment to protect receiving waters. The treated effluent is discharged into local watercourses that feed into the Neckar River, a major tributary of the Rhine. This region is ecologically significant, supporting diverse aquatic life and serving as a migratory corridor for fish species. The advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in downstream water bodies like the Rhine and the North Sea.

The plant discharges into the Neckar River basin, which flows into the Rhine River and ultimately the North Sea. The Neckar is a key waterway in Baden-Württemberg, supporting diverse aquatic ecosystems and providing habitat for species such as the European eel and various freshwater fish. Advanced treatment at this plant helps minimize nutrient pollution, which is crucial for maintaining water quality in the sensitive Rhine watershed and preventing algal blooms in downstream coastal areas.