Overview
DUCEY wastewater treatment plant in Ducey-les-Chéris, Normandie, France, serves 4,060 people with secondary treatment. It discharges 724.30 m³/day and has a designed capacity of 2,600 m³/day.
The DUCEY wastewater treatment plant is located in Ducey-les-Chéris, within the Normandie region of France. It serves a population of approximately 4,060 people, classifying it as a small to medium agglomeration under French and EU regulations. The plant is situated near the coast, within 10 km of the English Channel, which influences its environmental considerations. The plant provides secondary treatment, which is the minimum standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 2,600 m³/day, and the current discharge volume is 724.30 m³/day, indicating operational headroom. As a coastal facility, it must meet stringent effluent quality standards to protect marine waters. Treated wastewater from the plant is discharged into the local watershed, which ultimately drains into the English Channel. This coastal discharge requires careful management to prevent nutrient enrichment and protect the diverse marine ecosystems of the Normandie coast, including important shellfish habitats and migratory fish routes.
Environmental context
The plant discharges into the Sélune River basin, which flows into the Baie du Mont-Saint-Michel, a major tidal bay on the English Channel. This area is ecologically sensitive, supporting diverse aquatic life including migratory fish like salmon and eels, and extensive intertidal habitats. The bay is a critical stopover for migratory birds and hosts rich marine biodiversity. Coastal discharge from the plant must comply with EU directives to prevent eutrophication and protect these downstream ecosystems.
Frequently asked questions
The DUCEY plant is located in Ducey-les-Chéris, in the Normandie region of France, near the English Channel coast.
The plant serves approximately 4,060 people, classifying it as a small to medium agglomeration.
The plant discharges treated effluent into the local watershed, which flows into the Sélune River and ultimately into the Baie du Mont-Saint-Michel and the English Channel.
The plant provides secondary treatment, meeting the EU Urban Waste Water Treatment Directive requirements for agglomerations of its size.
As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for populations over 2,000 and stricter standards for coastal discharges.
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