Guntersleben Wastewater Treatment Plant, Güntersleben, Bayern, Germany

The Guntersleben wastewater treatment plant is located in the municipality of Güntersleben, in the Landkreis Würzburg, Bayern, Germany. It serves a population of approximately 4,663 people, classifying it as a small agglomeration under German and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,500 m³/day and an average discharge volume of 779.27 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Main River and then the Rhine River, flowing towards the North Sea. The plant plays a key role in protecting the water quality of these rivers and the downstream ecosystems, including the Rhine delta.

The plant discharges into a tributary of the Main River, which flows into the Rhine River and eventually reaches the North Sea. The Rhine basin is a densely populated and industrialized region, making advanced treatment crucial for reducing nutrient loads and protecting aquatic life. The downstream environment supports diverse fish species and migratory birds, and the plant's advanced treatment helps minimize eutrophication risks in the North Sea coastal zone.