KA Grasberg Wastewater Treatment Plant, Grasberg, Niedersachsen

KA Grasberg is a municipal wastewater treatment plant located in Grasberg, in the district of Osterholz, Niedersachsen, Germany. The plant serves a population of approximately 4,480, classifying it as a small agglomeration under German and EU regulations. It is situated inland, away from coastal areas, and treats wastewater from the local community. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 7,200 m³/day and an average discharge volume of 796.29 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The facility is part of Germany's robust wastewater infrastructure, which is regulated under national water laws and EU directives. The treated effluent is discharged into local water bodies that eventually drain into the Weser River basin. The Weser flows northward through Niedersachsen and into the North Sea, supporting diverse aquatic ecosystems along its course. The advanced treatment level helps protect these downstream environments from nutrient pollution and other contaminants, contributing to the ecological health of the region.

The plant discharges into local streams that are part of the Weser River basin. The Weser River flows through Niedersachsen and into the North Sea, supporting a variety of fish species and migratory birds. The advanced treatment reduces nutrient loads, helping to prevent eutrophication in downstream waters and maintaining water quality for both ecological and recreational uses.