HAM SOUS VARSBERG Wastewater Treatment Plant, Ham-sous-Varsberg, Grand Est

The HAM SOUS VARSBERG wastewater treatment plant is located in Ham-sous-Varsberg, a commune in the Moselle department of the Grand Est region, France. The facility serves a population of approximately 5,650 residents, placing it in the small-to-medium agglomeration category under the EU Urban Waste Water Treatment Directive (UWWTD). As a French plant, it operates under the national transposition of the EU UWWTD (Directive 91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The regulatory framework ensures compliance with European standards for organic matter and nutrient removal. The treated effluent is discharged into local watercourses that 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 location in the Grand Est region, near the German border, places it within a densely populated and industrialized area where water quality management is critical.

The plant discharges into the Moselle River basin, which flows through northeastern France and into Germany, eventually joining the Rhine River. The Rhine is a major European waterway supporting diverse aquatic life and serving as a critical habitat for migratory fish. The watershed is ecologically sensitive due to industrial and agricultural pressures, making effective wastewater treatment essential for maintaining water quality and biodiversity.