MOULINS Wastewater Treatment Plant, Avermes, Auvergne-Rhône-Alpes, France

The MOULINS wastewater treatment plant is located in Avermes, near Moulins in the Auvergne-Rhône-Alpes region of central France. It serves a population equivalent of 52,100, classifying it as a medium-sized agglomeration under European Union regulations. The plant is situated in the Allier department, within the Loire River basin. As a facility serving over 50,000 people, the MOULINS plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC). This directive requires secondary treatment for all discharges from agglomerations of this size, with more stringent tertiary treatment if the receiving waters are designated as sensitive areas. The plant's treatment process and capacity details are not publicly available, but the regulatory framework ensures compliance with European standards for wastewater treatment. The plant discharges treated effluent into the local water system, which ultimately drains into the Loire River, one of France's major waterways. The Loire basin supports diverse aquatic ecosystems and is an important corridor for migratory fish species. Proper treatment at this facility helps protect water quality in the Allier River and downstream environments, including the Loire estuary and the Bay of Biscay.

The MOULINS plant discharges into the Allier River, a major tributary of the Loire River. The Loire basin is ecologically significant, supporting diverse aquatic life and serving as a migratory route for Atlantic salmon and European eel. The river flows through the Loire Valley, a region known for its biodiversity and floodplain wetlands. Downstream, the Loire estuary and the Bay of Biscay receive the treated effluent, making effective nutrient removal critical to prevent eutrophication in coastal waters.