KA Wietzendorf (3580232016) - Advanced Wastewater Treatment in Reddingen, Niedersachsen

KA Wietzendorf (plant number 3580232016) is a municipal wastewater treatment facility located in Reddingen, a locality within the municipality of Wietzendorf in the Heidekreis district of Niedersachsen, Germany. The plant serves a population equivalent of approximately 7,359 people, placing it in the small-to-medium agglomeration category under German and EU regulations. The plant employs advanced treatment technology, which goes beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland discharges. With a designed capacity of 9,750 m³/day and an actual discharge volume of 737.3 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. It is assumed to be active based on discharge data. The treated effluent is discharged into the local watershed, which ultimately drains into the North Sea via the Weser river system. The plant plays a key role in protecting the region's groundwater and surface water quality, particularly in the ecologically sensitive heathland landscape of the Lüneburg Heath. Advanced treatment ensures removal of nutrients and pollutants, supporting the ecological health of downstream water bodies.

The plant discharges into the catchment of the Weser river, which flows through northern Germany into the North Sea. The surrounding Lüneburg Heath region is characterized by sandy soils and sensitive heathland ecosystems, making nutrient management critical. Advanced treatment helps prevent eutrophication in downstream rivers and the Wadden Sea, a vital intertidal zone supporting migratory birds and marine life.