BOSC LE HARD Wastewater Treatment Plant, Bosc-le-Hard, Normandie

BOSC LE HARD is a wastewater treatment plant located in the commune of Bosc-le-Hard, within the Seine-Maritime department of Normandie, France. The plant serves a population of around 1,000 residents and is designed to handle a capacity of 2,250 cubic meters per day, with a current discharge volume of 178.4 cubic meters per day. The plant provides secondary treatment, which is the minimum required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with European standards before discharge. The treated effluent is discharged into local watercourses that ultimately drain into the Seine River basin and then into the English Channel. The plant plays a key role in protecting the local aquatic environment and downstream ecosystems, including the Seine estuary, which supports diverse fish and bird populations.

The plant discharges into local streams that flow into the Seine River, which empties into the English Channel. The Seine estuary is an ecologically sensitive area that supports migratory fish species and provides important habitat for waterbirds. The plant's secondary treatment helps reduce nutrient and organic pollution, contributing to the health of the downstream marine environment.