YENNE Wastewater Treatment Plant, Yenne, Auvergne-Rhône-Alpes, France

The YENNE wastewater treatment plant is located in Yenne, a commune in the Savoie department of the Auvergne-Rhône-Alpes region, France. Situated along the Rhône River, the plant serves a population of about 9,035 residents, classifying it as a medium-sized agglomeration under French regulations. As a French wastewater facility, the plant operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's treatment processes are designed to meet national standards set by the French Ministry of Ecology, ensuring compliance with environmental quality objectives for receiving water bodies. The treated effluent is discharged into the Rhône River, which flows southward through the Rhône Valley and eventually into the Mediterranean Sea. The plant plays a crucial role in protecting the Rhône's water quality, supporting aquatic ecosystems and downstream uses such as drinking water supply and recreation.

The YENNE plant discharges into the Rhône River, a major European waterway that drains the Alps and flows into the Mediterranean Sea via the Camargue delta. The Rhône basin supports diverse aquatic life, including fish species like the European eel and migratory fish such as salmon. The plant's operations help maintain water quality in this ecologically sensitive river system, which is vital for regional biodiversity and human activities.