KA Rieste Wastewater Treatment Plant, Rieste, Niedersachsen

KA Rieste is a municipal wastewater treatment plant located in Rieste, a town in the Samtgemeinde Bersenbrück within Landkreis Osnabrück, Niedersachsen, Germany. The plant serves a population of approximately 6,705 people, placing it in the small-to-medium agglomeration category under EU regulations. As a German plant, KA Rieste is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's treatment processes and capacity are managed to meet national standards set by the Wasserhaushaltsgesetz (WHG) and relevant state regulations. The treated effluent from KA Rieste is discharged into local water bodies that ultimately drain into the Ems River basin, which flows into the North Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from nutrient pollution.

KA Rieste discharges into the Hase River, a tributary of the Ems River, which flows into the North Sea. The Ems basin supports diverse aquatic life and is an important ecological corridor. The plant's operations help maintain water quality in this sensitive lowland river system, which is subject to nutrient management under the EU Water Framework Directive.