Salzwedel Wastewater Treatment Plant, Salzwedel, Saxony-Anhalt, Germany

The Salzwedel wastewater treatment plant is located in the town of Salzwedel, in the Altmarkkreis Salzwedel district of Saxony-Anhalt, Germany. It serves a population equivalent of 20,350, classifying it as a medium-sized agglomeration under EU regulations. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving between 10,000 and 100,000 population equivalent are required to provide secondary treatment as a minimum, with tertiary treatment mandated if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory standards. The treated effluent from the plant is discharged into local watercourses that eventually drain into the Elbe River basin. The Elbe flows through northern Germany into the North Sea, supporting diverse aquatic ecosystems and providing important habitat for migratory fish species.

The plant discharges into the Elbe River basin, which flows through Saxony-Anhalt and into the North Sea. The Elbe supports a range of aquatic life and is an important migratory corridor for fish such as salmon and eel. The watershed includes agricultural and urban areas, requiring effective nutrient removal to prevent eutrophication in downstream waters.