DALEM Wastewater Treatment Plant, Dalem, Grand Est, France

The DALEM wastewater treatment plant is located in the commune of Dalem, within the Moselle department of the Grand Est region in northeastern France. It serves a population of approximately 4,060 residents, placing it in the small-to-medium agglomeration category under French wastewater regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 5,333 cubic meters per day and an actual discharge volume of 724.30 cubic meters per day, the facility operates well below its capacity, indicating robust infrastructure for current demand. The treated effluent is discharged into local watercourses that ultimately drain into the Rhine River basin. The Grand Est region is characterized by its mixed agricultural and industrial landscape, and the plant's advanced treatment helps protect downstream aquatic ecosystems and water quality in the Moselle River and beyond.

The plant discharges into local streams that flow into the Moselle River, a major tributary of the Rhine. The Rhine basin supports diverse aquatic life and is an important ecological corridor in Europe. Advanced treatment at this facility helps reduce nutrient loading and protect water quality in the downstream river system, which is vital for both biodiversity and human use.