AUFFAY Wastewater Treatment Plant, Heugleville-sur-Scie, Normandy

The AUFFAY wastewater treatment plant is located in Heugleville-sur-Scie, within the Normandy region of France. It serves a population of approximately 2,100 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated inland, more than 10 km from the coast, and its operations are part of the local municipal wastewater infrastructure. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. With a designed capacity of 3,000 m³/day and an actual discharge volume of 374.64 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. As a French plant, it is subject to national regulations transposing the EU directive, with permits issued by the local water agency. The treated effluent is discharged into a local watercourse that eventually drains into the Seine River basin and the English Channel. The plant's advanced treatment helps protect the sensitive aquatic environment of Normandy, which supports diverse freshwater and coastal ecosystems. By reducing nutrient loads and pollutants, the facility contributes to the ecological health of downstream waters.

The AUFFAY plant discharges into a local stream that flows into the Scie River, a coastal river in Normandy. The Scie River ultimately reaches the English Channel near Dieppe. This coastal zone supports diverse marine life and is important for local fisheries and tourism. The plant's advanced treatment helps minimize nutrient enrichment and protects the downstream estuarine and marine environment from eutrophication.