Ziesar Wastewater Treatment Plant, Brandenburg, Germany

Ziesar wastewater treatment plant is located in the town of Ziesar, in the Potsdam-Mittelmark district of Brandenburg, Germany. The plant serves a population of approximately 4,747 and is classified as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant employs advanced treatment processes, which go beyond the secondary treatment 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 6,750 cubic meters per day and currently discharges 454.80 cubic meters per day, indicating significant spare capacity. The treated effluent is discharged into local watercourses that ultimately drain into the Elbe River basin. The Elbe flows through Germany and into the North Sea, supporting diverse aquatic ecosystems. The advanced treatment helps protect downstream water quality in this ecologically important river system.

The Ziesar plant discharges into small streams that are part of the Elbe River basin. The Elbe River flows through Germany and the Czech Republic before reaching the North Sea, supporting a variety of fish species and migratory birds. The advanced treatment at Ziesar reduces nutrient loads, helping to prevent eutrophication in downstream lakes and coastal waters.