Mettingen Wastewater Treatment Plant, Nordrhein-Westfalen | Germany

Mettingen wastewater treatment plant is located in the town of Mettingen, in the district of Steinfurt, Nordrhein-Westfalen, Germany. The plant serves a population of approximately 70,000 people, classifying it as a large agglomeration under EU regulations. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations over 15,000 population equivalent. For larger agglomerations like Mettingen, the directive may also mandate tertiary treatment if the receiving water body is designated as sensitive. The plant's treated effluent is discharged into local watercourses that eventually drain into the Ems River basin. The Ems flows northward through North Rhine-Westphalia and Lower Saxony before reaching the North Sea. The downstream environment supports diverse aquatic life and is an important ecological corridor in the region.

The plant discharges into the Ems River basin, which flows through northwestern Germany and empties into the North Sea. The Ems River and its tributaries provide habitat for fish species such as salmon and trout, and the estuary supports migratory birds. The watershed is influenced by agricultural runoff and urban development, making effective wastewater treatment critical for maintaining water quality.