BENFELD Wastewater Treatment Plant, Herbsheim, Grand Est, France

The BENFELD wastewater treatment plant is located in Herbsheim, a commune in the Bas-Rhin department of the Grand Est region in northeastern France. Serving a population equivalent of 24,000, the plant is part of the region's municipal wastewater infrastructure, which manages effluent from both residential and commercial sources in the area. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent between 10,000 and 150,000 are classified as medium agglomerations, requiring secondary treatment as a minimum standard. For plants in sensitive areas, such as those discharging into nutrient-sensitive water bodies, tertiary treatment may be mandated. The BENFELD plant's treatment processes align with these regulatory requirements to protect local water quality. The treated effluent from the plant is discharged into the local watershed, which ultimately drains into the Rhine River basin. The Rhine is a major European waterway that flows through Germany and the Netherlands into the North Sea. The plant's operations help safeguard the ecological health of the Rhine basin, which supports diverse aquatic life and is an important migratory corridor for fish species.

The BENFELD plant discharges into the local tributaries of the Rhine River, which flows through the Grand Est region before continuing northward to the North Sea. The Rhine basin is ecologically significant, supporting diverse aquatic habitats and serving as a critical corridor for migratory fish such as salmon and eel. The plant's treatment processes help reduce nutrient and pollutant loads, protecting downstream water quality and biodiversity.