KA Lengede Wastewater Treatment Plant, Lengede, Niedersachsen

KA Lengede is a municipal wastewater treatment plant located in Lengede, Niedersachsen, Germany. The plant serves a population of approximately 12,935 people, classifying it as a medium agglomeration under EU regulations. It is situated inland, more than 50 km from the coast, and its operations are part of the regional wastewater infrastructure managed by local authorities. As a German plant serving over 10,000 people, KA Lengede is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for all discharges from agglomerations of this scale. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant is expected to meet these regulatory standards to protect water quality. The treated effluent from KA Lengede is discharged into local watercourses that ultimately drain into the Weser river basin, which flows into the North Sea. The plant plays a key role in safeguarding the ecological health of the surrounding streams and rivers, supporting aquatic life and preventing nutrient pollution in downstream waters.

KA Lengede discharges into local streams that are part of the Weser river basin, which flows northward through Niedersachsen and into the North Sea. The Weser basin supports diverse aquatic ecosystems, including fish species such as salmon and trout, and is an important migratory corridor. The plant's treatment performance is critical to maintaining water quality in this ecologically sensitive watershed, particularly in preventing eutrophication from nutrient loads.