Overview
Les Vans wastewater treatment plant in Chambonas, Auvergne-Rhône-Alpes, France, serves about 3,190 people with advanced treatment. It discharges treated water into the local watershed, ultimately draining to the Mediterranean Sea.
The Les Vans wastewater treatment plant is located in Chambonas, a commune in the Ardèche department of the Auvergne-Rhône-Alpes region in southern France. The facility serves a population of approximately 3,190 people, reflecting a small to medium-sized agglomeration typical of rural communities in this part of the country. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 5,000 cubic meters per day and an average discharge volume of 569 cubic meters per day, the facility operates well within its capacity, ensuring effective treatment of incoming wastewater. The treated effluent is discharged into the local watercourse, which flows into the Ardèche River and eventually reaches the Rhône River before entering the Mediterranean Sea. This downstream connection highlights the plant's role in protecting the sensitive aquatic ecosystems of the Ardèche region, including the famous Ardèche Gorges, which support diverse wildlife and are a key ecological and tourist area.
Environmental context
The plant discharges into a tributary of the Ardèche River, which flows through a karst landscape known for its biodiversity and scenic gorges. The Ardèche River joins the Rhône River, which empties into the Mediterranean Sea. The region supports species such as the European beaver and various migratory birds, making the protection of water quality critical for downstream habitats.
Frequently asked questions
The Les Vans wastewater treatment plant is located in Chambonas, a commune in the Ardèche department of the Auvergne-Rhône-Alpes region in southern France.
The plant serves a population of approximately 3,190 people, typical of a small to medium-sized agglomeration in rural France.
The treated effluent is discharged into a local watercourse that flows into the Ardèche River, then the Rhône River, and ultimately the Mediterranean Sea.
The plant provides advanced treatment, which exceeds the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for agglomerations of this size.
As a French facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations over 2,000 population equivalent. The plant's advanced treatment aligns with France's commitment to protecting sensitive water bodies.
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