AGNIERES EN DEVOLUY VILLAGE Wastewater Treatment Plant, Le Dévoluy, France

AGNIERES EN DEVOLUY VILLAGE is a municipal wastewater treatment plant located in the commune of Le Dévoluy, within the Hautes-Alpes department of Provence-Alpes-Côte d'Azur, France. The plant serves a population of approximately 5,067 residents and has a design capacity of 7,000 cubic meters per day, with an average discharge volume of 903.94 m³/day. The plant provides secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with European effluent standards before discharge. The treated effluent is discharged into the local watershed, which ultimately drains into the Durance River and then the Rhône River, flowing into the Mediterranean Sea. The plant plays a key role in protecting the water quality of the Durance basin, a region known for its alpine ecosystems and recreational water uses.

The plant discharges into the Durance River basin, a major tributary of the Rhône River that flows into the Mediterranean Sea. The Durance supports diverse aquatic life and is important for irrigation and hydroelectric power in the region. The secondary treatment helps reduce nutrient and organic pollution, safeguarding downstream water quality in this ecologically sensitive alpine watershed.