ORMONT DESSUS_LES DIABLERETS Wastewater Treatment Plant, Les Diablerets, Vaud, Switzerland

The ORMONT DESSUS_LES DIABLERETS wastewater treatment plant is located in Les Diablerets, a village in the canton of Vaud, Switzerland. It serves a population of 1,568 and operates with advanced treatment processes, reflecting the high standards of Swiss wastewater management. The plant has a designed capacity of 7,500 m³/day and currently discharges 711.75 m³/day of treated effluent. As an advanced treatment facility, it likely incorporates nutrient removal to protect sensitive Alpine water bodies. Swiss regulations require stringent treatment for discharges into mountain streams and rivers. The treated effluent from the plant ultimately flows into the Grande Eau river, a tributary of the Rhone, which drains into Lake Geneva and then the Mediterranean Sea. The plant plays a key role in preserving water quality in the Alpine watershed, supporting aquatic life and downstream ecosystems.

The plant discharges into the Grande Eau river, which flows into the Rhone and then Lake Geneva, one of Europe's largest freshwater lakes. The Alpine watershed is ecologically sensitive, supporting diverse aquatic life including trout and other cold-water species. Advanced treatment helps minimize nutrient loading and protects the lake from eutrophication.