Beauvoir-sur-Mer Route de la Barre Wastewater Treatment Plant, Pays de la Loire, France

Beauvoir-sur-Mer Route de la Barre is a municipal wastewater treatment plant located in the commune of Beauvoir-sur-Mer, in the Vendée department of Pays de la Loire, France. The plant serves a population of approximately 3,200 residents and is situated in a coastal area near the Atlantic Ocean. 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. The designed capacity is 8,000 m³/day, and the current discharge volume is 570.87 m³/day, indicating ample reserve capacity for future growth or seasonal tourist influx. The treated effluent is discharged into the local watershed, which ultimately drains into the Bay of Biscay in the Atlantic Ocean. The plant plays a key role in protecting the coastal marine environment and the nearby Marais Breton-Vendéen wetlands, a sensitive ecological area that supports diverse birdlife and aquatic habitats.

The plant discharges into the local coastal watershed that flows into the Bay of Biscay, a part of the Atlantic Ocean. The area includes the Marais Breton-Vendéen, an ecologically sensitive wetland complex that supports migratory birds and diverse aquatic species. Secondary treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in the coastal zone.