MONT LA VILLE Wastewater Treatment Plant, Mont-la-Ville, Vaud, Switzerland

MONT LA VILLE is an advanced wastewater treatment plant located in the municipality of Mont-la-Ville, within the District of Morges in the canton of Vaud, Switzerland. The plant serves a small population of 599 residents, reflecting its role in a rural Alpine foothill community. Its address at Chemin du Larret places it in a landscape of rolling hills and agricultural land, typical of the Swiss Plateau region. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by Swiss water protection legislation. With a designed capacity of 1,000 m³/day and an actual discharge volume of 271.9 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal demand. Swiss regulations, aligned with the EU Urban Waste Water Treatment Directive, mandate stringent effluent quality for sensitive water bodies, and advanced treatment ensures high removal of nutrients and pollutants. The treated effluent from MONT LA VILLE is discharged into local watercourses that ultimately drain into the Rhone River basin via the Venoge River or other tributaries of Lake Geneva (Lac Léman). Lake Geneva is a large, deep alpine lake that supports diverse aquatic life and serves as a critical drinking water reservoir for the region. The plant's advanced treatment helps protect this sensitive ecosystem from eutrophication and contamination.

MONT LA VILLE discharges treated wastewater into local streams that flow into the Venoge River, a tributary of Lake Geneva (Lac Léman). Lake Geneva is one of Europe's largest freshwater lakes, supporting a rich biodiversity including endemic fish species and migratory birds. The lake also supplies drinking water to over a million people in Switzerland and France. Advanced treatment at the plant ensures minimal nutrient loading, helping to prevent algal blooms and maintain water quality in this ecologically sensitive alpine lake.