SAINT JULIEN CHAPTEUIL Le Bourg Wastewater Treatment Plant, Saint-Pierre-Eynac, France

SAINT JULIEN CHAPTEUIL Le Bourg is an advanced wastewater treatment plant located in Saint-Pierre-Eynac, within the Haute-Loire department of the Auvergne-Rhône-Alpes region in France. The plant serves a population of 1,127 and has a design capacity of 2,433 m³/day, with a current discharge volume of 201.06 m³/day. As an advanced treatment facility, the plant goes beyond secondary treatment to remove nutrients and other pollutants, meeting the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC). For small agglomerations like this, the directive mandates appropriate treatment to protect receiving waters, and advanced treatment is often required in sensitive areas. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Loire River basin. The Loire is France's longest river and supports diverse aquatic ecosystems, including migratory fish species. The advanced treatment helps protect downstream water quality and ecological health.

The plant discharges into the Loire River basin, which flows through central France before reaching the Atlantic Ocean. The Loire is known for its biodiversity, including salmon and eel populations. Advanced treatment at this plant reduces nutrient loading, helping to prevent eutrophication in downstream waters and supporting the ecological balance of the river system.