LANGEAC Le Bourg Wastewater Treatment Plant, Mazeyrat-d'Allier, Auvergne-Rhône-Alpes

LANGEAC Le Bourg is a wastewater treatment plant located in Mazeyrat-d'Allier, a commune in the Haute-Loire department of Auvergne-Rhône-Alpes, France. The plant serves a population of approximately 5,639 people, placing it in the small-to-medium agglomeration category under French and EU regulations. As a plant of this scale in France, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations above 2,000 population equivalent. The plant's treatment processes are designed to meet these standards, ensuring compliance with national and European water quality objectives. 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 supports diverse aquatic ecosystems and is an important corridor for migratory fish species. The plant's operations help protect downstream water quality in this ecologically sensitive region.

The plant discharges into the Allier River basin, which flows into the Loire River and eventually reaches the Atlantic Ocean. The Loire basin is known for its rich biodiversity, including populations of Atlantic salmon and European eel. The plant's treatment performance is critical to maintaining water quality in this ecologically significant watershed.