SAINT AVOLD JEANNE D ARC Wastewater Treatment Plant, Freyming-Merlebach, Grand Est

SAINT AVOLD JEANNE D ARC is an advanced wastewater treatment plant located in Freyming-Merlebach, within the Grand Est region of France. The facility serves a population of 1,600 and has a designed capacity of 2,800 cubic meters per day, with an average discharge volume of 285.44 cubic meters per day. The plant employs advanced treatment processes, ensuring high-quality effluent before discharge. As a French facility, it operates under the national regulations implementing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas and secondary treatment for all agglomerations above 2,000 population equivalent. For smaller agglomerations like this one, appropriate treatment is required to protect receiving waters. The treated effluent from the plant is discharged into local watercourses that eventually drain into the Moselle River, a major tributary of the Rhine. The Rhine basin supports diverse aquatic ecosystems and is an important migratory corridor for fish species. The plant's advanced treatment helps minimize nutrient and pollutant loads, contributing to the ecological health of the downstream environment.

The plant discharges into the Moselle River basin, which flows into the Rhine River and ultimately the North Sea. The Moselle-Rhine system supports diverse aquatic life, including salmonids and other migratory fish. Advanced treatment at this facility reduces nutrient enrichment risks, protecting downstream water quality in this ecologically sensitive transboundary basin.