BREIL SUR ROYA village Wastewater Treatment Plant, Breil-sur-Roya, France

BREIL SUR ROYA village is a municipal wastewater treatment plant located in Breil-sur-Roya, a commune in the Alpes-Maritimes department of Provence-Alpes-Côte d'Azur, France. The plant serves a population of 1,722 and operates with secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The plant's designed capacity is 3,000 m³/day, with a current discharge volume of 307.20 m³/day, indicating ample capacity for current loads. As a coastal plant within 10 km of the Mediterranean Sea, the facility plays a key role in protecting the marine environment. The treated effluent is discharged into the local watershed, which ultimately drains into the Ligurian Sea. Secondary treatment ensures removal of organic matter and suspended solids, reducing nutrient loads that could contribute to eutrophication in coastal waters. The plant's operation is subject to French regulations implementing the EU directive, which mandates secondary treatment for inland and coastal discharges. Given its proximity to the coast, the plant helps safeguard the ecological quality of the Mediterranean coastal zone, which supports diverse marine life and tourism.

The plant discharges into the local watershed that flows toward the Mediterranean Sea, specifically the Ligurian Sea near the French Riviera. This coastal area is ecologically sensitive, supporting seagrass meadows and marine biodiversity. The secondary treatment reduces organic pollution and suspended solids, helping to maintain water quality for recreational use and marine habitats.