Overview
Saint-Jean-d'Aulps wastewater treatment plant in Auvergne-Rhône-Alpes, France, serves about 5,345 people with advanced treatment. It discharges 953.54 m³/day of treated effluent, with a designed capacity of 3,233 m³/day.
The Saint-Jean-d'Aulps wastewater treatment plant is located in the Haute-Savoie department of the Auvergne-Rhône-Alpes region, France. It serves the municipality of Saint-Jean-d'Aulps and surrounding areas, with a population equivalent of approximately 5,345. The plant is situated near the Dranse River basin, which flows into Lake Geneva, a major Alpine lake. The plant employs advanced treatment processes, ensuring high-quality effluent before discharge. With a designed capacity of 3,233 m³/day and an average daily flow of 953.54 m³/day, it operates well within its capacity. As a French facility, it complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations above 2,000 population equivalent and tertiary treatment in sensitive areas. The treated wastewater is discharged into the local watershed, ultimately reaching the Dranse River and then Lake Geneva. Lake Geneva is a critical freshwater resource for the region, supporting biodiversity and providing drinking water. The plant's advanced treatment helps protect this sensitive Alpine ecosystem from nutrient pollution and other contaminants.
Environmental context
The plant discharges into the Dranse River catchment, which flows into Lake Geneva (Lac Léman), one of Europe's largest freshwater lakes. Lake Geneva is ecologically sensitive, supporting diverse aquatic life and serving as a drinking water source for millions. The advanced treatment at Saint-Jean-d'Aulps reduces nutrient loads, helping to prevent eutrophication and maintain water quality in this important Alpine watershed.
Frequently asked questions
The plant is located in Saint-Jean-d'Aulps, in the Haute-Savoie department of the Auvergne-Rhône-Alpes region, France. Its address is Route de Sofélery, Les Mouilles, 74430 Saint-Jean-d'Aulps.
The plant serves approximately 5,345 people, corresponding to a small to medium agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the local watershed, which drains into the Dranse River and ultimately into Lake Geneva, a major Alpine lake.
The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants, protecting the sensitive Alpine environment.
As a French facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of about 5,000 population equivalent, the directive requires secondary treatment, and advanced treatment is often mandated in sensitive areas like the Lake Geneva basin.
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