KA Hagen Kassebruch - Advanced Wastewater Treatment Plant in Hagen im Bremischen, Germany

KA Hagen Kassebruch is an advanced wastewater treatment plant located in Hagen im Bremischen, in the district of Cuxhaven, Niedersachsen, Germany. The plant serves a population of approximately 3,184 and has a designed capacity of 4,100 cubic meters per day, with a current discharge volume of 446.09 cubic meters per day. As an advanced treatment facility, the plant goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants discharging into sensitive water bodies under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, the directive requires at least secondary treatment, and advanced treatment is mandated when discharging into sensitive areas. The plant is located near the Drepte river and is within 10 km of the North Sea coast. Its treated effluent ultimately drains into the North Sea, contributing to the protection of coastal water quality and marine ecosystems in the Wadden Sea region, a critical habitat for migratory birds and marine life.

The plant discharges into the Drepte river, a small tributary that flows into the Weser river, which then empties into the North Sea near Bremerhaven. The North Sea coast in this region is ecologically sensitive, supporting diverse marine life and serving as an important migratory corridor for birds. Advanced treatment helps reduce nutrient loading, mitigating eutrophication risks in coastal waters.