BRIONNE SBR Wastewater Treatment Plant, Brionne, Normandie, France

BRIONNE SBR is an advanced wastewater treatment plant located in Brionne, a commune in the Eure department of Normandie, France. The plant serves a population of around 3,166 and has a designed capacity of 7,200 m³ per day, with a current discharge volume of 564.81 m³/day. It operates under French regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. As a small agglomeration (under 10,000 population equivalent), the EU directive mandates secondary treatment, but the plant's advanced level indicates a commitment to protecting sensitive receiving waters. The treated effluent is discharged into local watercourses that ultimately drain into the Seine River basin and the English Channel. The plant plays a key role in safeguarding the region's aquatic ecosystems, supporting biodiversity in the Normandy countryside.

The plant discharges into local streams that flow into the Risle River, a tributary of the Seine, which empties into the English Channel. The downstream environment supports diverse freshwater and estuarine habitats, including fish spawning grounds and migratory bird routes. Advanced treatment helps minimize nutrient loading, protecting water quality in the Seine estuary and coastal zone.