SAINT PRIVAT ARDECHE Wastewater Treatment Plant, Saint-Privat, France

SAINT PRIVAT ARDECHE is a municipal wastewater treatment plant located in Saint-Privat, a commune in the Ardèche department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of approximately 3,020 residents and is situated inland, away from coastal areas. 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 of this size. With a designed capacity of 2,500 m³/day and an average discharge volume of 538.76 m³/day, the facility operates well within its capacity. French regulations, transposing the EU directive, mandate secondary treatment for discharges into freshwater bodies, ensuring compliance with national standards. The treated effluent is discharged into the local watershed, which ultimately drains into the Ardèche River and then the Rhône River, a major European waterway flowing into the Mediterranean Sea. The plant plays a key role in protecting the water quality of these downstream environments, supporting aquatic life and recreational uses.

The plant discharges into the Ardèche River basin, a tributary of the Rhône River, which flows into the Mediterranean Sea. The Ardèche River is known for its scenic gorges and supports diverse aquatic ecosystems, including fish species such as the European eel and various cyprinids. The treatment plant helps maintain water quality in this sensitive karstic region, preventing nutrient enrichment and safeguarding downstream habitats.