CABANAC ET VILLAGRAINS Wastewater Treatment Plant, Cabanac-et-Villagrains, France

CABANAC ET VILLAGRAINS is a wastewater treatment plant located in the commune of Cabanac-et-Villagrains, within the Bordeaux metropolitan area of Gironde, Nouvelle-Aquitaine, France. The plant serves a small population of 680 residents and is situated inland, more than 10 km from the coast. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent below 10,000. With a designed capacity of 750 m³/day and an average discharge volume of 121.31 m³/day, the facility operates well within its capacity. Treated wastewater is discharged into local watercourses that eventually drain into the Garonne River and the Gironde estuary, a major ecological zone supporting diverse aquatic life and migratory fish species. The plant plays a key role in protecting the region's water quality and downstream ecosystems.

The plant discharges into local streams that flow into the Garonne River, which then reaches the Gironde estuary, the largest estuary in Western Europe. This estuary is a critical habitat for migratory fish such as salmon and eels, and supports a rich diversity of birdlife. The plant's secondary treatment helps reduce organic pollution and protect these downstream environments.