ST GEORGES DE MONTAIGU Route de Bouffere Wastewater Treatment Plant, Montaigu-Vendée

ST GEORGES DE MONTAIGU Route de Bouffere is a wastewater treatment plant located in La Lévinière, Saint-Georges-de-Montaigu, within the commune of Montaigu-Vendée in the Pays de la Loire region of France. The plant serves a population of 2,707 and has a designed capacity of 3,000 m³/day, with a current discharge volume of 482.92 m³/day. The plant employs advanced treatment processes, exceeding the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. As a French facility, it operates under national regulations transposing the directive, with permits issued by the local water agency. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the Vendée River or its tributaries. The plant's advanced treatment helps protect downstream water quality in a region known for agriculture and biodiversity, including the Marais Poitevin wetlands and coastal ecosystems.

The plant discharges into the local watershed within the Vendée River basin, which flows into the Bay of Biscay (Atlantic Ocean). The region supports diverse aquatic life and includes ecologically sensitive areas such as the Marais Poitevin, a large wetland complex important for migratory birds and fish. Advanced treatment reduces nutrient loading, helping to prevent eutrophication in downstream coastal waters.