Warendorf Wastewater Treatment Plant, Warendorf, Nordrhein-Westfalen, Germany

The Warendorf wastewater treatment plant is located in the city of Warendorf, in the state of Nordrhein-Westfalen, Germany. It serves a population of approximately 47,813 people, placing it in the medium agglomeration category under EU classification. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations between 10,000 and 150,000 population equivalent are required to provide secondary treatment, with more advanced treatment if discharging into sensitive areas. It is expected to meet these regulatory standards. The plant's treated effluent is discharged into local watercourses that eventually drain into the Ems River basin, which flows northward to the North Sea. The surrounding region is characterized by agricultural land and small rivers, making proper nutrient removal important to protect downstream water quality and aquatic ecosystems.

The Warendorf plant discharges into the local watershed, which is part of the Ems River basin. The Ems River flows through northwestern Germany and empties into the North Sea near Emden. This region supports diverse aquatic life and is used for agriculture and recreation. Effective wastewater treatment is crucial to prevent nutrient enrichment and maintain ecological balance in the river and its estuary.