BAIN DE BRETAGNE Wastewater Treatment Plant, Bain-de-Bretagne, France

The BAIN DE BRETAGNE wastewater treatment plant is located in Bain-de-Bretagne, in the Ille-et-Vilaine department of Brittany, France. It serves a population of approximately 4,580 residents and operates with advanced treatment technology, ensuring high-quality effluent before discharge. The plant has a designed capacity of 8,000 m³/day and currently treats an average daily flow of 817 m³/day. As a French facility, it operates under the national regulations implementing the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas and secondary treatment as a minimum for agglomerations of this size. The treated effluent is discharged into local waterways that eventually drain into the Atlantic Ocean via the Vilaine River basin. The plant's advanced treatment helps protect the downstream aquatic environment, supporting biodiversity and water quality in the region's rivers and coastal areas.

The plant discharges into the Vilaine River basin, which flows into the Atlantic Ocean near the Gulf of Morbihan. This coastal region supports diverse aquatic life, including migratory fish species and estuarine habitats. Advanced treatment reduces nutrient loading, helping to prevent eutrophication in downstream waters.