Overview
BESSAY SUR ALLIER is an advanced wastewater treatment plant in Bessay-sur-Allier, Auvergne-Rhône-Alpes, France, serving approximately 4,000 people with a designed capacity of 3,150 m³/day.
BESSAY SUR ALLIER is an advanced wastewater treatment plant located in the commune of Bessay-sur-Allier, within the Allier department of Auvergne-Rhône-Alpes, France. The plant serves a population of approximately 4,000 residents and has a designed capacity of 3,150 cubic meters per day, with a reported discharge volume of 713.59 cubic meters per day. As an advanced treatment facility, BESSAY SUR ALLIER goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. This aligns with the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for agglomerations discharging into sensitive areas. The plant's scale places it in the small-to-medium agglomeration category, for which the directive requires at least secondary treatment, but the plant exceeds this standard. The treated effluent is discharged into the local watershed, which ultimately drains into the Allier River, a major tributary of the Loire River. The Loire basin is one of France's largest river systems, supporting diverse aquatic ecosystems and providing water for agriculture and drinking water downstream. The plant's advanced treatment helps protect the Allier and Loire rivers from nutrient pollution and other contaminants.
Environmental context
The plant discharges into the Allier River, which flows northward to join the Loire River, one of France's longest rivers. The Loire basin supports a rich diversity of fish species, including Atlantic salmon and European eel, and is an important migratory corridor. The advanced treatment at BESSAY SUR ALLIER reduces nutrient loads, helping to prevent eutrophication in downstream water bodies and protecting the ecological health of the Loire estuary.
Frequently asked questions
BESSAY SUR ALLIER is located in Bessay-sur-Allier, a commune in the Allier department of Auvergne-Rhône-Alpes, France. The address is D 300, Les Bourgeons, Bessay-sur-Allier.
The plant serves approximately 4,000 people, making it a small-to-medium agglomeration under EU classification.
The treated effluent is discharged into the Allier River, which flows into the Loire River and eventually reaches the Atlantic Ocean.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment. This is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. For its population size, secondary treatment is required, but the plant exceeds this with advanced treatment to protect the Allier River.
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