CANCALE 1 Wastewater Treatment Plant, Cancale, Bretagne, France

CANCALE 1 is a municipal wastewater treatment plant located in Cancale, in the Bretagne region of northwestern France. The plant serves a population of 8,450, placing it in the small-to-medium agglomeration category under French and EU regulations. Its location near the coast makes it subject to stringent environmental standards to protect marine waters. As a French plant, CANCALE 1 operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into coastal waters. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating it is sized to handle the local population's wastewater. The regulatory framework ensures compliance with national and EU standards. The plant's treated effluent is discharged into the coastal waters of the English Channel, near the Baie du Mont-Saint-Michel, a region known for its rich marine biodiversity and tidal ecosystems. The area supports fisheries, shellfish farming, and migratory bird populations, making effective wastewater treatment critical for maintaining water quality and ecological health.

CANCALE 1 discharges treated wastewater into the coastal waters of the English Channel, specifically near the Baie du Mont-Saint-Michel. This bay is a highly productive marine environment supporting diverse aquatic life, including shellfish beds and migratory birds. The plant's proximity to the coast necessitates advanced treatment to prevent nutrient enrichment and protect the sensitive coastal ecosystem.