KA Stade Wastewater Treatment Plant, Stade, Niedersachsen

KA Stade is a municipal wastewater treatment plant located in Stade, Niedersachsen, Germany, serving a population of approximately 73,957. The plant is situated near the Elbe River, which flows into the North Sea, placing it in a coastal-sensitive region. As a German facility serving a medium-to-large agglomeration, KA Stade operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. For plants in sensitive areas like the Elbe estuary, tertiary treatment for nutrient removal is typically mandated to protect the marine environment. The plant's treated effluent is discharged into the Elbe River, which drains into the North Sea. This water body supports diverse aquatic life and is an important migratory corridor for fish. The plant plays a key role in reducing nutrient loads and safeguarding water quality in the downstream estuary and coastal zone.

KA Stade discharges into the Elbe River, which flows through Hamburg and into the North Sea. The Elbe estuary is ecologically sensitive, supporting diverse aquatic life and serving as a critical habitat for migratory fish species. Nutrient reduction from wastewater treatment is essential to prevent eutrophication in the coastal waters of the Wadden Sea.