KA Siedenburg Wastewater Treatment Plant, Siedenburg, Niedersachsen

KA Siedenburg is a municipal wastewater treatment plant located in Siedenburg, a town in the district of Diepholz, Niedersachsen, Germany. The plant serves a population equivalent of about 5,251 and has a designed capacity of 7,500 cubic meters per day, with an actual discharge volume of 824.76 m³/day. It operates under Germany's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas. The plant provides advanced treatment, which typically includes biological nutrient removal (nitrogen and phosphorus) in addition to secondary treatment. This level of treatment is required for discharges into sensitive water bodies under the EU directive. The plant's capacity utilization is low, indicating it has ample reserve capacity for future growth or seasonal peaks. Treated effluent from KA Siedenburg is discharged into local watercourses that ultimately drain into the Weser River basin. The Weser flows northward through Niedersachsen and into the North Sea. The plant's advanced treatment helps protect the ecological health of the Weser catchment, which supports diverse aquatic life and is important for regional biodiversity.

KA Siedenburg discharges into local streams that are part of the Weser River basin. The Weser flows through Niedersachsen and empties into the North Sea. The region's watershed supports diverse aquatic ecosystems, including fish species such as salmon and trout. Advanced treatment at the plant reduces nutrient loads, helping to prevent eutrophication in downstream waters and the North Sea.