PIERREFORT BOURG Wastewater Treatment Plant, Pierrefort, Auvergne-Rhône-Alpes

PIERREFORT BOURG is a wastewater treatment plant located in Pierrefort, a commune in the Cantal department of Auvergne-Rhône-Alpes, France. The plant serves a population of approximately 2,069 residents, providing essential sanitation services for this rural community in the Massif Central region. The plant operates with advanced treatment technology, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,665 cubic meters per day and an average discharge volume of 369 cubic meters per day, the facility is well-sized for its service area. The advanced treatment ensures high-quality effluent that protects the receiving environment. The treated wastewater is discharged into the local watershed, which ultimately drains into the Truyère River, a tributary of the Lot River, and then into the Garonne River before reaching the Atlantic Ocean. The plant plays a key role in preserving water quality in this rural area, supporting aquatic life and downstream ecosystems in the Garonne basin.

The plant discharges into the local watershed that feeds the Truyère River, a tributary of the Lot River, which flows into the Garonne River and eventually reaches the Atlantic Ocean. The region is part of the Massif Central, a sparsely populated area with sensitive freshwater ecosystems. The advanced treatment level helps protect downstream aquatic habitats and supports biodiversity in the Garonne basin.