BEIGNON La tannerie Wastewater Treatment Plant, Beignon, Bretagne

BEIGNON La tannerie is an advanced wastewater treatment plant located in Beignon, a commune in the Morbihan department of Bretagne, France. The plant serves a population of approximately 3,029 residents, reflecting its role in managing municipal wastewater for this rural community. As an advanced treatment facility, BEIGNON La tannerie goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. The plant has a designed capacity of 4,500 m³/day and currently discharges a volume of 540.37 m³/day, indicating operational headroom. It operates under France's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on agglomeration size and receiving water sensitivity. The treated effluent is discharged into local watercourses that ultimately drain into the Vilaine River basin and then into the Atlantic Ocean. The plant's advanced treatment helps protect downstream aquatic ecosystems, including the Vilaine estuary and coastal waters, from nutrient pollution and other contaminants.

The plant discharges into the local watershed that feeds the Vilaine River, which flows into the Bay of Biscay in the Atlantic Ocean. This region supports diverse aquatic life, including migratory fish species such as Atlantic salmon and European eel. The advanced treatment helps mitigate nutrient loading, protecting downstream water quality and the ecological health of the estuary and coastal zone.