Bordesholm Wastewater Treatment Plant, Reesdorf, Schleswig-Holstein

The Bordesholm wastewater treatment plant is located in Reesdorf, a municipality in the Bordesholm district within the Kreis Rendsburg-Eckernförde region of Schleswig-Holstein, Germany. The plant serves a population equivalent of around 20,533, classifying it as a medium-sized agglomeration under European Union regulations. Its location in northern Germany places it within a region characterized by a temperate maritime climate and a mix of agricultural and urban land uses. As a German wastewater facility, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary biological treatment for agglomerations with a population equivalent above 2,000. For a plant serving over 20,000 people, the directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The plant's designed capacity is reported as 1.00, though the unit is unspecified; this likely refers to a capacity in thousands of cubic meters per day or similar metric. The treated effluent from the Bordesholm plant is discharged into local watercourses that ultimately drain into the North Sea via the Eider River system or other nearby basins. The region's waterways support diverse aquatic life and are important for both ecological balance and local agriculture. The plant's operation helps protect downstream environments, including the North Sea coastal ecosystem, from nutrient pollution and other contaminants.

The Bordesholm plant discharges into the Spökau, a small watercourse that flows into the Eider River, which eventually reaches the North Sea. The North Sea is a highly productive marine environment supporting fisheries and migratory bird populations. Nutrient loading from wastewater can contribute to eutrophication in coastal waters, making effective treatment crucial for maintaining water quality in the Eider basin and the broader Wadden Sea ecosystem.