Overview
SAINT MEDARD D EYRANS Intercommunale is a secondary wastewater treatment plant in Saint-Médard-d'Eyrans, Nouvelle-Aquitaine, France, serving approximately 4,182 people with a designed capacity of 5,750 m³/day.
SAINT MEDARD D EYRANS Intercommunale is a municipal wastewater treatment facility located in Saint-Médard-d'Eyrans, within the Bordeaux metropolitan area of Nouvelle-Aquitaine, France. The plant serves a population of around 4,182 and has a designed capacity of 5,750 cubic meters per day, with an average discharge volume of 746.06 cubic meters per day. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with European effluent quality standards before discharge. The treated effluent is discharged into local waterways that ultimately drain into the Garonne River and the Gironde estuary, a major ecological and economic resource in southwestern France. The plant plays a key role in protecting the region's water quality and supporting the health of downstream aquatic ecosystems.
Environmental context
The plant discharges into the local watershed that feeds the Garonne River, which flows into the Gironde estuary, the largest estuary in western Europe. This estuary supports diverse aquatic life, including migratory fish species such as Atlantic salmon and European eel. The plant's secondary treatment helps reduce nutrient and organic pollution, mitigating eutrophication risks in the estuary and coastal waters of the Bay of Biscay.
Frequently asked questions
The plant is located on Chemin de la Bugonne in Saint-Médard-d'Eyrans, a commune in the Gironde department of Nouvelle-Aquitaine, France, near Bordeaux.
The plant serves approximately 4,182 people, classifying it as a small to medium agglomeration under the EU Urban Waste Water Treatment Directive.
The plant provides secondary treatment and discharges treated effluent into local waterways that flow into the Garonne River and eventually the Gironde estuary.
As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size, and is subject to national water laws enforced by the Agence de l'Eau Adour-Garonne.
For agglomerations between 2,000 and 10,000 population equivalent, the EU directive mandates secondary treatment, typically involving biological processes like activated sludge or biofiltration to reduce organic pollution.
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