Hartzviller Wastewater Treatment Plant, Grand Est, France

The Hartzviller wastewater treatment plant is located in the commune of Hartzviller, within the Moselle department of the Grand Est region in northeastern France. This facility serves a population of approximately 1,750 residents, reflecting its role as a small-scale municipal treatment plant in a rural setting. The plant employs advanced treatment processes, which go beyond the secondary treatment requirements mandated by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 4,100 m³/day and an average daily discharge of 312.20 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into local waterways that ultimately drain into the Rhine River basin, contributing to the overall water quality management of the region. The advanced treatment level helps protect downstream aquatic ecosystems and supports the ecological health of the Moselle and Rhine rivers.

The plant's discharge enters the local hydrographic network, which flows into the Moselle River and eventually the Rhine River, a major European waterway. The Rhine basin supports diverse aquatic life and is an important migratory corridor for fish species. Advanced treatment at this plant reduces nutrient and pollutant loads, helping to maintain water quality in this ecologically sensitive river system.