CHATEAUNEUF D ILLE ET VILAINE Wastewater Treatment Plant, Brittany, France

CHATEAUNEUF D ILLE ET VILAINE is an advanced wastewater treatment plant located in Châteauneuf-d'Ille-et-Vilaine, a commune in the Ille-et-Vilaine department of Brittany, France. The plant serves a population of approximately 2,500 residents and is situated near the coast, within 10 km of the English Channel. It operates under French regulations implementing the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. This level of treatment is typical for sensitive areas or coastal zones to protect marine environments. The plant has a designed capacity of 2,000 m³/day and currently discharges 446 m³/day of treated wastewater, indicating it operates well below its capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the English Channel. The plant's advanced treatment helps protect the coastal waters and the Rance estuary, an ecologically sensitive area that supports diverse aquatic life and migratory bird populations. The region's coastal environment benefits from reduced nutrient loading, preventing eutrophication and preserving water quality.

The plant discharges into the local watershed that flows into the Rance River and then the English Channel. The coastal zone is ecologically sensitive, supporting diverse marine life and migratory birds. Advanced treatment reduces nutrient pollution, protecting the estuary and coastal waters from eutrophication.