SKA Harthausen Wastewater Treatment Plant, Harthausen, Baden-Württemberg

SKA Harthausen is a wastewater treatment plant located in Harthausen, a district of Igersheim in the Main-Tauber-Kreis district of Baden-Württemberg, Germany. The plant served a small population of 500 people and was classified as an advanced treatment facility, indicating it provided tertiary-level treatment beyond secondary standards. The plant is now closed, but during operation it had a designed capacity of 1,100 cubic meters per day, with an actual discharge volume of 126.54 cubic meters. As a German plant in the EU, SKA Harthausen operated under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment for small agglomerations. For a population of 500, the directive mandates secondary treatment or equivalent, but the plant achieved advanced treatment, exceeding minimum requirements. The plant's closure may reflect consolidation of wastewater services in the region. The plant's treated effluent was discharged into local watercourses that drain into the Tauber River, a tributary of the Main River, which flows into the Rhine. The Rhine basin is a major European watershed supporting diverse aquatic ecosystems and providing drinking water for millions. The plant's advanced treatment helped protect these downstream waters from nutrient pollution and other contaminants.

SKA Harthausen discharged into local streams that feed the Tauber River, a tributary of the Main River, which joins the Rhine. The Rhine basin is ecologically significant, supporting migratory fish like salmon and eel, and providing habitat for diverse aquatic species. The plant's advanced treatment reduced nutrient loads, helping to protect the Rhine from eutrophication and maintaining water quality for downstream communities and ecosystems.