SAINT SYMPHORIEN LE VALOIS 2 Wastewater Treatment Plant, Normandy, France

SAINT SYMPHORIEN LE VALOIS 2 is an advanced wastewater treatment plant located in Saint-Symphorien-le-Valois, a commune in the Manche department of Normandy, France. The plant serves a population of approximately 5,360 and has a designed capacity of 7,200 m³/day, with an average discharge volume of 956.21 m³/day. 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. This level of treatment is typically implemented in sensitive areas to reduce nutrient loads and protect receiving water bodies. The treated effluent is discharged into local watercourses that eventually drain into the English Channel. The plant plays a key role in protecting the region's aquatic ecosystems and coastal waters from nutrient pollution and other contaminants.

The plant discharges into local streams that flow into the Douve river basin, which ultimately reaches the English Channel near the Cotentin Peninsula. This coastal area supports diverse marine life and is important for migratory birds. Advanced treatment helps reduce nutrient inputs, protecting the sensitive coastal environment from eutrophication.