Tecklenburg Leeden Wastewater Treatment Plant, Tecklenburg, Germany

Tecklenburg Leeden is an advanced wastewater treatment plant located in the Leeden district of Tecklenburg, in the state of Nordrhein-Westfalen, Germany. The plant serves a population of about 3,237 and has a designed capacity of 4,000 m³/day, with an actual discharge volume of 804 m³/day, indicating it operates well below its capacity. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), German plants of this scale are required to meet strict effluent standards, and advanced treatment is typical for sensitive areas or larger agglomerations. The plant's performance is regulated under German water law, which implements the EU directive. The treated effluent is discharged into local watercourses that drain into the Ems River basin, eventually reaching the North Sea. The plant plays a key role in protecting the region's water quality, supporting aquatic life in the surrounding streams and contributing to the ecological health of the Ems catchment.

The plant discharges into small streams in the Leeden area, which are part of the Ems River basin. The Ems flows northward through Nordrhein-Westfalen and Lower Saxony before emptying into the Dollart estuary and the North Sea. The watershed supports diverse aquatic habitats and is important for migratory fish species. Advanced treatment helps minimize nutrient loading, protecting downstream ecosystems from eutrophication.