Trégastel Route de Trebeurden Wastewater Treatment Plant, Brittany

The Trégastel Route de Trebeurden wastewater treatment plant is located in the coastal town of Trégastel in the Brittany region of northwestern France. The facility serves a population of 5,535 and is situated near the English Channel, reflecting the area's mix of residential and tourist activity. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a design capacity of 15,000 m³/day and an actual discharge volume of 987.43 m³/day, the plant has significant reserve capacity to handle seasonal population fluctuations common in coastal tourist destinations. The treated effluent is discharged into the local coastal waters of the English Channel, which supports diverse marine life and is part of a broader ecosystem that includes important migratory bird routes and shellfish habitats. The advanced treatment level helps protect the sensitive coastal environment from nutrient pollution and other contaminants.

The plant discharges into the coastal waters of the English Channel near Trégastel. This area is part of the larger Western English Channel ecosystem, which supports diverse marine life including fish, crustaceans, and seabirds. The advanced treatment helps protect the local coastal environment, which is important for tourism and fishing, from excessive nutrient loading and pathogens.