MERDRIGNAC LA RACINE Wastewater Treatment Plant, Merdrignac, Brittany

MERDRIGNAC LA RACINE is a wastewater treatment facility located in Merdrignac, a commune in the Côtes-d'Armor department of Brittany, France. The plant serves a population of around 3,689, classifying it as a small agglomeration under EU regulations. The plant employs advanced treatment processes, ensuring high-quality effluent. With a designed capacity of 3,325 m³/day and an actual discharge volume of 658 m³/day, it operates well below capacity. As a French facility, it complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for discharges into sensitive areas. The treated effluent is discharged into local watercourses that eventually flow into the English Channel. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems, and maintaining the ecological balance of the downstream environment.

The plant discharges into local streams that drain into the Rance River basin, ultimately reaching the English Channel. This coastal region supports diverse marine life and is important for fisheries. Advanced treatment helps minimize nutrient loading, protecting downstream habitats from eutrophication.