BLANGY SUR BRESLE Wastewater Treatment Plant, Blangy-sur-Bresle, Normandie

BLANGY SUR BRESLE is an advanced wastewater treatment plant located in Blangy-sur-Bresle, a commune in the Seine-Maritime department of Normandie, France. The plant serves a population of approximately 5,000 residents, reflecting its role as a medium-sized municipal facility in the region. Its designed capacity of 6,000 m³/day indicates it is sized to accommodate local wastewater flows with some reserve capacity. 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 typically includes nutrient removal (nitrogen and phosphorus) and may involve tertiary filtration or disinfection. As a French facility, it operates under national regulations transposing the EU directive, with oversight from the local water agency (Agence de l'Eau Seine-Normandie). The treated effluent is discharged into the Bresle River, a coastal river that flows into the English Channel near Le Tréport. The Bresle River supports diverse aquatic life and is an important habitat for migratory fish species such as salmon and sea trout. The plant's advanced treatment helps protect the river's water quality and the downstream marine environment of the English Channel.

The plant discharges into the Bresle River, which flows approximately 68 km through Normandie and Picardy before entering the English Channel at Le Tréport. The river's estuary is an ecologically sensitive area that supports a variety of bird species and serves as a nursery for marine fish. Advanced treatment at the plant reduces nutrient loads, helping to prevent eutrophication in the coastal zone and maintain the ecological balance of the downstream environment.