FERRIERE ZI du Bois Imbert Wastewater Treatment Plant, La Ferrière, France

FERRIERE ZI du Bois Imbert is an advanced wastewater treatment plant located in La Ferrière, within the Vendée department of Pays de la Loire, France. The plant serves a population of 3,367 and has a designed capacity of 4,000 m³/day, with an average discharge volume of approximately 600.67 m³/day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a French facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment levels based on the sensitivity of receiving waters and agglomeration size. For a plant of this scale, advanced treatment is consistent with discharge into sensitive areas or compliance with national standards. The treated effluent is discharged into local watercourses that ultimately drain into the Atlantic Ocean via the Vendée River basin. The plant plays a key role in protecting downstream aquatic ecosystems and maintaining water quality in the region, which supports diverse freshwater and coastal habitats.

The plant discharges into the local watershed within the Vendée River basin, which flows into the Bay of Biscay (Atlantic Ocean). The downstream environment includes rivers and coastal zones that support diverse aquatic life, including fish and migratory species. The advanced treatment helps reduce nutrient loading, protecting these ecosystems from eutrophication and maintaining ecological balance.