Wefensleben Wastewater Treatment Plant, Belsdorf, Saxony-Anhalt

The Wefensleben wastewater treatment plant is located in Belsdorf, a district of Wefensleben in the Börde district of Saxony-Anhalt, Germany. The plant serves a population of approximately 1,800 residents and operates with advanced treatment technology, ensuring high-quality effluent. As an advanced treatment facility, Wefensleben goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive catchment areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant has a design capacity of 3,300 m³/day and currently treats an average daily flow of 455 m³, indicating ample reserve capacity. The treated effluent is discharged into local watercourses that eventually drain into the Aller River, a tributary of the Weser, which flows into the North Sea. The plant plays a key role in protecting the Aller-Weser river system from nutrient pollution and supporting downstream aquatic ecosystems.

The plant discharges into the Aller River basin, which flows into the Weser River and ultimately the North Sea. The Aller is an ecologically important river supporting diverse fish populations and riparian habitats. Advanced treatment at Wefensleben helps reduce nutrient loads that could otherwise contribute to eutrophication in the Weser estuary and North Sea coastal waters.