POMMERIEUX SMASA Wastewater Treatment Plant, Pommérieux, Grand Est, France

POMMERIEUX SMASA is a wastewater treatment facility located in Pommérieux, a commune in the Moselle department of the Grand Est region, France. The plant serves a population of around 2,900 residents and is part of the municipal infrastructure managed by the local sanitation authority. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 5,000 m³/day and an average discharge volume of 517.35 m³/day, the facility operates well within its capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, but POMMERIEUX SMASA exceeds these standards with its advanced treatment level. The treated effluent is discharged into local watercourses that ultimately drain into the Moselle River, a major tributary of the Rhine. The Rhine basin is ecologically significant, supporting diverse aquatic life and serving as a vital water resource for the region. The plant's advanced treatment helps protect downstream water quality and the broader Rhine ecosystem.

The plant discharges into the Moselle River basin, which flows into the Rhine River and eventually the North Sea. The Moselle is a key tributary of the Rhine, supporting diverse fish populations and migratory species. The advanced treatment at POMMERIEUX SMASA reduces nutrient loads, helping to prevent eutrophication in downstream waters and maintain the ecological health of the Rhine basin.