Nennhausen Wastewater Treatment Plant, Brandenburg, Germany

The Nennhausen wastewater treatment plant is located in the municipality of Nennhausen, in the Havelland district of Brandenburg, Germany. It serves a population of approximately 3,757 residents, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated in a rural area, contributing to the local sanitation infrastructure. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. With a designed capacity of 5,000 m³/day and an actual discharge volume of 331.51 m³/day, the facility operates well below its capacity, indicating potential for future growth or seasonal variations. The advanced treatment likely includes nutrient removal to protect sensitive water bodies. The treated effluent is discharged into local watercourses that eventually drain into the Elbe River basin, which flows into the North Sea. The plant's advanced treatment helps safeguard the ecological health of downstream waters, including the Elbe's diverse aquatic habitats and the North Sea's marine environment.

The Nennhausen plant discharges into small streams that feed into the Havel River, a tributary of the Elbe River. The Elbe flows through Germany and into the North Sea, supporting important fisheries and migratory bird populations. The advanced treatment at Nennhausen reduces nutrient loads, helping to prevent eutrophication in the Elbe estuary and the North Sea.