Caudebec-en-Caux Wastewater Treatment Plant, Rives-en-Seine, Normandy

The Caudebec-en-Caux wastewater treatment plant is located in Rives-en-Seine, a commune in the Seine-Maritime department of Normandy, France. It serves a population of approximately 3,900 residents and has a designed capacity of 3,700 cubic meters per day, with an average discharge volume of 695.75 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 typical for plants discharging into sensitive areas, ensuring high effluent quality. The treated wastewater is discharged into the Seine River, which flows through Normandy and into the English Channel. The Seine estuary is an ecologically important area, supporting diverse aquatic life and serving as a migratory corridor for fish species. The plant's advanced treatment helps protect downstream water quality and the sensitive coastal environment.

The plant discharges into the Seine River, which flows through Normandy and drains into the English Channel. The Seine estuary is a dynamic ecosystem that supports diverse aquatic life, including migratory fish such as salmon and eels. Advanced treatment at this plant helps reduce nutrient and pollutant loads, protecting the estuary's ecological health and the broader marine environment.