SKA Steinen Wastewater Treatment Plant, Höllstein, Baden-Württemberg

SKA Steinen is a municipal wastewater treatment plant located in Höllstein, a district of Steinen in the Landkreis Lörrach, Baden-Württemberg, Germany. The plant serves a population equivalent of approximately 51,300, placing it in the medium agglomeration category under EU classification. As a German plant, SKA Steinen is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant likely employs biological treatment processes to meet national discharge standards, which are enforced by the relevant state authority in Baden-Württemberg. The treated effluent is discharged into the local water system, which ultimately drains into the Rhine River basin. The Rhine is a major European waterway that flows through Germany into the North Sea, supporting diverse aquatic life and serving as a critical ecological corridor. The plant's operations help protect downstream water quality in this sensitive river system.

SKA Steinen discharges into the Wiese River, a tributary of the Rhine River. The Rhine flows through Germany and the Netherlands before reaching the North Sea. This basin supports diverse aquatic ecosystems, including migratory fish species such as salmon and eel. The plant's treatment processes help reduce nutrient and pollutant loads, contributing to the ecological health of the Rhine and North Sea.