AMBERIEU EN BUGEY Chateau Gaillard Wastewater Treatment Plant, Saint-Denis-en-Bugey, France

The AMBERIEU EN BUGEY Chateau Gaillard wastewater treatment plant is located in Saint-Denis-en-Bugey, a commune in the Ain department of the Auvergne-Rhône-Alpes region, France. It serves a population of approximately 45,100 people, classifying it as a medium-sized agglomeration under French and European regulations. As a French wastewater treatment plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The plant's treatment processes and capacity are managed to meet national standards set by the French water agencies, ensuring compliance with environmental regulations. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Rhône River, one of Europe's major rivers. The Rhône flows into the Mediterranean Sea, making the plant's operations important for protecting downstream aquatic ecosystems and coastal water quality in the Camargue region.

The plant's treated effluent enters the local watercourse, which is part of the Rhône River basin. The Rhône flows southward through the Rhône Valley and into the Mediterranean Sea near the Camargue delta. This watershed supports diverse aquatic life and is an important migratory corridor for fish species. The plant's discharge contributes to the overall water quality of the Rhône, affecting downstream ecosystems and the sensitive coastal environment of the Mediterranean.