BOISGERVILLY Wastewater Treatment Plant, Boisgervilly, Bretagne, France

BOISGERVILLY is a wastewater treatment plant located in Boisgervilly, a commune in the Ille-et-Vilaine department of Bretagne, France. The plant serves a population of approximately 3,200 residents and is part of the region's municipal wastewater infrastructure. It is situated inland, more than 10 km from the coast, and operates under French regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU directive for agglomerations of this size. With a designed capacity of 1,900 m³/day and an average daily discharge of 570.87 m³/day, the facility operates well within its capacity, indicating effective management of local wastewater flows. The treated effluent is discharged into local watercourses that eventually drain into the English Channel via the Rance or Vilaine river basins. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems, and maintaining the ecological health of downstream environments, including estuaries and coastal zones.

The plant's discharge contributes to the local watershed, which flows through the Ille-et-Vilaine department and ultimately reaches the English Channel. The receiving water bodies support diverse aquatic life and are part of a network of rivers and streams that sustain agricultural and natural landscapes. The advanced treatment helps minimize nutrient and pollutant loads, protecting downstream habitats and water quality.