CHATEAU SALINS Wastewater Treatment Plant, Château-Salins, Grand Est, France

The CHATEAU SALINS wastewater treatment plant is located in Château-Salins, a commune in the Moselle department of the Grand Est region, France. The facility serves a population of approximately 1,400 people, classifying it as a small agglomeration under French and EU regulations. The plant is situated along the D 674 road and operates within the Moselle river basin. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The designed capacity is 3,500 m³/day, with an actual discharge volume of 249.76 m³/day, indicating ample reserve capacity. The treated effluent is discharged into local watercourses that eventually drain into the Moselle River, a major tributary of the Rhine. The Moselle basin supports diverse aquatic ecosystems and is an important corridor for migratory fish. The plant's advanced treatment helps reduce nutrient loading, contributing to the ecological health of the downstream Rhine delta and the North Sea.

The plant discharges into the Moselle River basin, which flows into the Rhine River and ultimately the North Sea. The Moselle is a regulated river with significant ecological importance, supporting species such as the European eel and Atlantic salmon. Advanced treatment at this plant helps control eutrophication in the Rhine delta, a region sensitive to nutrient pollution from agricultural and urban sources.