Évrecy Wastewater Treatment Plant, Normandy, France - Advanced Treatment for 2,665 Residents

The Évrecy wastewater treatment plant is located in the commune of Évrecy in the Calvados department of Normandy, France. It serves a population of approximately 2,665 residents, placing it in the small agglomeration category under French and EU regulations. The plant is situated inland, more than 10 km from the coast, but within 50 km of the English Channel. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity is 5,000 m³/day, and it currently discharges 475.43 m³/day of treated wastewater, indicating significant spare capacity. The plant operates under the French regulatory framework, which implements the EU directive through national legislation, and is subject to permits issued by the local water agency. The treated effluent is discharged into a local watercourse that eventually drains into the English Channel via the Orne River or its tributaries. The receiving waters support diverse aquatic life and contribute to the ecological health of the Normandy coast. The plant's advanced treatment helps protect downstream water quality in a region known for its agricultural landscapes and proximity to the Bay of the Seine.

The plant discharges into a local stream that flows into the Orne River, which empties into the English Channel at Ouistreham. The downstream environment includes the Bay of the Seine, a coastal area that supports diverse marine life and is important for migratory birds. The advanced treatment helps reduce nutrient loading and protect the sensitive coastal ecosystem from eutrophication.