Uebigau Wastewater Treatment Plant, Elbe-Elster, Brandenburg, Germany

The Uebigau wastewater treatment plant is located in the Elbe-Elster district of Brandenburg, Germany, serving the town of Uebigau-Wahrenbrück. With a population equivalent of around 8,800, it is classified as a small to medium agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated along the Elsterradweg, a cycling path that follows the Black Elster River, which flows through the region. The plant provides advanced treatment, which goes beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The plant has a designed capacity of 17,000 m³/day, indicating room for future growth or seasonal peaks. Current discharge volume is about 978 m³/day, well below capacity. The treated effluent from Uebigau is discharged into the Black Elster River, a tributary of the Elbe River. The Black Elster flows through the Lusatian region and eventually joins the Elbe near Elsterwerda. The Elbe then continues through Germany to the North Sea. The plant's advanced treatment helps protect the aquatic ecosystem of the Black Elster and downstream waters from nutrient pollution.

The Uebigau plant discharges into the Black Elster River, which flows into the Elbe River and ultimately the North Sea. The Black Elster is part of the Elbe basin, a major European watershed supporting diverse aquatic life and migratory fish species. The region's lowland rivers are sensitive to nutrient enrichment, making advanced treatment important for maintaining water quality and preventing eutrophication in downstream lakes and coastal areas.