Zierenberg _ Oberelsungen Wastewater Treatment Plant, Oberelsungen, Hessen, Germany

Zierenberg _ Oberelsungen is a wastewater treatment plant located in Oberelsungen, a district of Zierenberg in the Landkreis Kassel, Hessen, Germany. The plant served a population of approximately 1,900 people and had a design capacity of 2,600 m³/day, with an average discharge volume of 480.84 m³/day. The plant was classified as providing advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal to protect sensitive water bodies. The plant is now closed, and its operational status is listed as closed. The plant's discharge likely entered a local watercourse within the Weser river basin, which drains into the North Sea. The plant's advanced treatment level would have helped protect downstream aquatic ecosystems from nutrient pollution, supporting water quality in the region.

The plant is located inland in Hessen, Germany, within the Weser river basin. Treated wastewater from the plant would have discharged into a local tributary of the Weser, which flows northward to the North Sea. The region's water bodies support diverse aquatic life and are subject to EU water quality standards, including the Water Framework Directive. Advanced treatment at this plant would have reduced nutrient loads, helping to prevent eutrophication in downstream waters.