OIE L CIMETIERE Wastewater Treatment Plant, L'Oie, France

OIE L CIMETIERE is an advanced wastewater treatment plant located in L'Oie, a commune in the Vendée department of Pays de la Loire, France. The plant serves a population of approximately 2,790 residents, reflecting its role in managing municipal wastewater for this small agglomeration. As an advanced treatment facility, OIE L CIMETIERE goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent French and EU standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, but advanced treatment is often implemented in sensitive areas to protect water quality. The plant discharges treated effluent into local waterways that ultimately drain into the Atlantic Ocean via the Vendée River and the Bay of Biscay. Its advanced treatment helps protect downstream aquatic ecosystems and supports the ecological health of the region's rivers and coastal waters.

The plant discharges into the local watershed, which flows through the Vendée River and into the Bay of Biscay, a part of the Atlantic Ocean. This coastal region supports diverse marine life and is important for fisheries and tourism. Advanced treatment at OIE L CIMETIERE helps reduce nutrient loading, protecting sensitive estuarine and coastal ecosystems from eutrophication.