Veauville-lès-Baons Wastewater Treatment Plant, Hautot-Saint-Sulpice, Normandy

The Veauville-lès-Baons wastewater treatment plant is located in Hautot-Saint-Sulpice, within the Normandy region of France. It serves a population of approximately 1,700 people, classifying it as a small agglomeration 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 facility operates with advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant's designed capacity is 2,000 m³/day, and it currently discharges 303.28 m³/day, indicating significant reserve capacity. The treated effluent is discharged into local watercourses that drain toward the English Channel. The plant plays a key role in protecting the region's water quality, particularly given Normandy's agricultural landscape and the ecological importance of coastal waters. By employing advanced treatment, the facility helps reduce nutrient loading that could otherwise contribute to eutrophication in downstream marine environments.

The plant discharges into local streams that flow toward the English Channel, part of the Seine-Normandy basin. The downstream environment includes the Baon river and ultimately the Channel, which supports diverse marine life and is an important migratory corridor for fish. Advanced treatment helps minimize nutrient pollution, protecting coastal ecosystems from eutrophication.