GENESTON Marboeuf Wastewater Treatment Plant, Geneston, Pays de la Loire

GENESTON Marboeuf is a wastewater treatment plant located in Geneston, a commune in the Loire-Atlantique department of Pays de la Loire, France. The plant serves a population of 3,583 and is part of the municipal infrastructure managed by the local authority. Its advanced treatment level indicates a high standard of effluent quality, suitable for sensitive receiving environments. As an advanced treatment facility, GENESTON Marboeuf goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant's designed capacity is 3,000 m³/day, and it currently treats an average daily volume of 639.2 m³, operating well within its capacity. This ensures reliable treatment performance and compliance with regulatory standards. The treated effluent from GENESTON Marboeuf is discharged into local watercourses that ultimately drain into the Loire River, one of France's major rivers flowing into the Atlantic Ocean. The plant plays a crucial role in protecting the Loire basin's water quality, supporting aquatic ecosystems and downstream uses such as agriculture and recreation. Its advanced treatment helps reduce nutrient loading, mitigating eutrophication risks in the river and its estuary.

The plant discharges into the Loire River basin, which flows through western France and empties into the Bay of Biscay (Atlantic Ocean). The Loire is a ecologically significant river supporting diverse fish species, including Atlantic salmon and European eel, and its estuary is a critical habitat for migratory birds. Advanced treatment at this plant helps control nutrient pollution, safeguarding the river's ecological health and the downstream marine environment.