CREON 2 Wastewater Treatment Plant, Créon, Nouvelle-Aquitaine, France

CREON 2 is an advanced wastewater treatment facility located in Créon, a commune in the Gironde department of Nouvelle-Aquitaine, southwestern France. The plant serves a population of approximately 5,558 residents and is part of the region's municipal wastewater infrastructure. As an advanced treatment plant, CREON 2 goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent effluent quality standards. With a designed capacity of 5,500 m³/day and an average discharge volume of 991.54 m³/day, the plant operates well within its capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, and advanced treatment is often mandated in sensitive areas to protect water quality. The treated effluent from CREON 2 is discharged into the local watershed, which ultimately drains into the Garonne River and then the Gironde estuary, a major tidal estuary on the Atlantic coast. This estuary supports diverse aquatic life and is an important ecological corridor for migratory fish species. The plant's advanced treatment helps minimize nutrient loading and protect downstream water quality.

CREON 2 discharges treated wastewater into the local watershed, which flows into the Garonne River and then the Gironde estuary, a large tidal estuary on the Atlantic coast of France. The estuary is ecologically sensitive, supporting diverse fish populations and migratory birds. Advanced treatment at the plant reduces nutrient and pollutant loads, helping to protect this downstream environment from eutrophication and other impacts.