SAINT MARTIN VESUBIE Toron_village Wastewater Treatment Plant, Saint-Martin-Vésubie, France

SAINT MARTIN VESUBIE Toron_village is a wastewater treatment plant located in Saint-Martin-Vésubie, a commune in the Alpes-Maritimes department of the Provence-Alpes-Côte d'Azur region in southeastern France. The plant serves a small population of 640 residents and is situated in the mountainous terrain of the French Alps, near the Italian border. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent (PE) between 2,000 and 10,000. With a designed capacity of 2,500 m³/day, the plant is sized to accommodate seasonal variations typical of alpine tourist areas. The current discharge volume of 114.18 m³/day indicates low utilization relative to capacity. The treated effluent is discharged into the local watershed, which drains into the Vésubie River, a tributary of the Var River. The Var flows into the Mediterranean Sea near Nice. The plant's operation helps protect the sensitive alpine aquatic ecosystems and the downstream coastal environment from nutrient pollution and pathogens.

The plant discharges into the Vésubie River, which flows into the Var River and ultimately reaches the Mediterranean Sea near Nice. The alpine watershed supports diverse aquatic life, including native trout species, and is an important corridor for migratory fish. The region's steep terrain and seasonal snowmelt create variable flow conditions, making consistent treatment essential to prevent downstream eutrophication and protect coastal water quality.