WITRY LES REIMS Wastewater Treatment Plant, Witry-lès-Reims, Grand Est

The WITRY LES REIMS wastewater treatment plant is located in Witry-lès-Reims, a commune in the Marne department of the Grand Est region, northeastern France. The facility serves a population of approximately 9,216 people, classifying it as a medium-sized agglomeration under European Union classifications. As a French wastewater treatment plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas, such as those prone to eutrophication. The plant's treated effluent is discharged into local watercourses that eventually drain into the Seine River basin, ultimately reaching the English Channel. The facility plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic environments.

The plant discharges into the local hydrographic network within the Seine River basin, which flows northward through the Paris Basin and into the English Channel. This watershed supports diverse aquatic life and is important for migratory fish species. The region's chalk geology and agricultural land use make nutrient management a key consideration for preventing eutrophication in downstream waters.