Stadtallendorf _ Schweinsberg Wastewater Treatment Plant, Hessen, Germany

The Stadtallendorf _ Schweinsberg wastewater treatment plant is located in the town of Schweinsberg, within the Hessen region of Germany. It serves a population of approximately 2,000 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the minimum required for freshwater discharges from agglomerations of this size under the directive. As a secondary treatment facility, the plant uses biological processes to reduce organic matter and suspended solids. Its designed capacity is 2,000 cubic meters per day, and it currently discharges an average of 660.47 cubic meters daily, indicating operational headroom. The plant is part of Germany's extensive wastewater infrastructure, which is regulated under national law implementing EU directives, ensuring compliance with effluent standards. The treated effluent is discharged into local watercourses that ultimately drain into the Rhine River basin. The Rhine is a major European waterway supporting diverse aquatic ecosystems and providing drinking water for millions. The plant's secondary treatment helps protect downstream water quality, reducing nutrient loads that could contribute to eutrophication in the North Sea, the final destination of Rhine waters.

The plant discharges into small streams that flow into the Lahn River, a tributary of the Rhine. The Rhine basin is ecologically significant, supporting migratory fish like salmon and eel, and providing habitat for numerous bird species. The plant's secondary treatment reduces organic pollution and helps maintain the ecological health of these waterways, which are important for biodiversity and regional water supply.