Mothe Achard Rte du Plessis Landry Wastewater Treatment Plant, Les Achards, France

The Mothe Achard Rte du Plessis Landry wastewater treatment plant is located in Les Achards, within the Vendée department of Pays de la Loire, France. It serves a population of approximately 4,018, classifying it as a small to medium agglomeration under French regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 4,000 m³/day and a current discharge volume of 716.8 m³/day, the facility operates well within its capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the Vendée River or nearby coastal waters. The plant's advanced treatment helps protect the sensitive coastal environment and supports the ecological health of the region's rivers and estuaries.

The plant discharges into the local watershed in the Vendée region, which flows into the Atlantic Ocean. This coastal area supports diverse aquatic life and is important for migratory fish species. The advanced treatment level helps minimize nutrient and pollutant loads, protecting downstream water quality and marine ecosystems.