TREIZE SEPTIERS ZI Vincent Ansquer Wastewater Treatment Plant, Treize-Septiers, France

TREIZE SEPTIERS ZI Vincent Ansquer is an advanced wastewater treatment plant located in Treize-Septiers, in the Pays de la Loire region of France. The facility serves a population of approximately 2,055 residents and is situated in the Vendée department, part of the broader La Roche-sur-Yon area. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 2,500 m³/day and a current discharge volume of 366.61 m³/day, the plant operates well within its capacity. As a French facility, it complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels for agglomerations of this size. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the Vendée River and its tributaries. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream environments.

The plant discharges into the local watershed that feeds the Vendée River, which flows into the Bay of Biscay in the Atlantic Ocean. This coastal region supports diverse aquatic life and is important for migratory fish species. Advanced treatment helps minimize nutrient loading and protects the sensitive estuarine and marine ecosystems downstream.