Yerville Wastewater Treatment Plant, La Fontelaye, Normandie

The Yerville wastewater treatment plant is located in La Fontelaye, a commune in the Seine-Maritime department of Normandie, France. It serves a population of 3,700 and operates with advanced treatment processes, ensuring high-quality effluent before discharge. With a designed capacity of 8,150 m³/day and an average daily flow of 660.07 m³, the plant operates well below its capacity. As a French facility, it complies with national regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas and secondary treatment for all agglomerations above 2,000 population equivalent. The plant's treated effluent is discharged into local watercourses that eventually drain into the English Channel. The surrounding region features agricultural landscapes and small rivers, contributing to the ecological health of the downstream environment.

The plant discharges into the local river system within the Seine-Maritime department, which flows toward the English Channel. This coastal region supports diverse aquatic life and is part of the larger Seine basin. The advanced treatment helps protect downstream water quality, particularly in sensitive areas that may be affected by nutrient enrichment.