Bouzonville Wastewater Treatment Plant | Grand Est, France

The Bouzonville wastewater treatment plant is located in the commune of Bouzonville, in the Moselle department of the Grand Est region, France. It serves a population of approximately 4,500 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated inland, away from coastal areas, and its operations are part of the regional water management infrastructure. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant has a designed capacity of 7,500 m³/day and currently treats an average daily flow of 802.79 m³/day, indicating significant spare capacity for future growth or seasonal variations. Treated effluent from the plant is discharged into local watercourses that ultimately drain into the Moselle River, a major tributary of the Rhine. The Rhine basin is a critical ecological and economic corridor in Europe. The advanced treatment level helps protect downstream water quality, supporting aquatic life and reducing nutrient loading that could contribute to eutrophication in the Rhine Delta and the North Sea.

The plant discharges into the Moselle River basin, which flows into the Rhine and eventually the North Sea. The Moselle is a key tributary supporting diverse aquatic ecosystems, including fish species such as salmon and eel. Advanced treatment at Bouzonville reduces nutrient loads, helping to mitigate eutrophication risks in the Rhine Delta and coastal waters. The region's temperate climate and agricultural land use make nutrient control particularly important for maintaining water quality.