KA Lehrte Wastewater Treatment Plant - Lehrte, Niedersachsen, Germany

KA Lehrte is a municipal wastewater treatment plant located in Lehrte, Niedersachsen, Germany. The plant serves a population of approximately 31,587 people, classifying it as a medium-sized agglomeration under EU regulations. It is situated in the region of Hannover, an area with mixed urban and agricultural land use. As a German plant, KA Lehrte operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. 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 local water quality. The treated effluent from KA Lehrte is discharged into the local water system, which ultimately drains into the North Sea via the Leine and Weser rivers. The plant plays a key role in maintaining the ecological health of these waterways, supporting aquatic life and preventing nutrient pollution in downstream ecosystems.

The plant's discharge enters the local drainage network, which flows into the Leine River, a tributary of the Weser River. The Weser drains into the North Sea, a sensitive marine environment. The region's watershed supports diverse aquatic habitats and is important for migratory fish species. Nutrient removal at the plant helps prevent eutrophication in downstream waters.