Overview
ANCENIS La Bigotterie wastewater treatment plant serves Ancenis-Saint-Géréon in Pays de la Loire, France. It treats wastewater for a population equivalent of 153,666, operating under EU regulations.
ANCENIS La Bigotterie is a wastewater treatment plant located in Ancenis-Saint-Géréon, within the Pays de la Loire region of France. The plant serves a population equivalent of 153,666, classifying it as a large agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). As a facility in France, it operates within the national regulatory framework that transposes EU directives, ensuring compliance with discharge standards. However, under the EU UWWTD, agglomerations with a population equivalent greater than 150,000 are required to provide secondary treatment, and in sensitive areas, tertiary treatment may be mandated. The plant's location in the Loire-Atlantique department suggests it may discharge into the Loire River basin, which ultimately flows into the Atlantic Ocean. The environmental significance of this plant lies in its role in protecting the Loire River and downstream coastal waters. The Loire is one of France's major rivers, supporting diverse aquatic ecosystems and providing water for agriculture and industry. Proper treatment at this scale helps reduce nutrient loads and pollutants, safeguarding water quality and biodiversity in the region.
Environmental context
The plant is situated in the Loire River basin, with treated effluent likely discharged into the Loire or its tributaries. The Loire flows westward through the Pays de la Loire region and empties into the Bay of Biscay (Atlantic Ocean). This watershed supports a variety of aquatic life, including migratory fish species such as Atlantic salmon and European eel. The plant's treatment performance is critical to maintaining water quality in this ecologically sensitive river system and the downstream marine environment.
Frequently asked questions
The plant is located at Chemin de la Griette, La Bigoterie, Ancenis, in the commune of Ancenis-Saint-Géréon, Loire-Atlantique, Pays de la Loire, France.
The plant serves a population equivalent of 153,666, classifying it as a large agglomeration under EU regulations.
The treated effluent is likely discharged into the Loire River or its tributaries, which flow into the Atlantic Ocean. The plant operates under French regulations that require compliance with EU UWWTD standards.
The plant helps protect the Loire River and its downstream ecosystems, including the Bay of Biscay. By treating wastewater, it reduces pollution that could harm aquatic life and water quality in this major French river basin.
As a large agglomeration (over 150,000 PE), the plant must comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment and, in sensitive areas, tertiary treatment to reduce nutrients. French national law implements these standards, and the plant is subject to regular monitoring.
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