REPLONGES Wastewater Treatment Plant, Replonges, Auvergne-Rhône-Alpes

The REPLONGES wastewater treatment plant is located in Replonges, a commune in the Ain department of the Auvergne-Rhône-Alpes region, France. The plant serves a population of approximately 2,890 people, classifying it as a small agglomeration under French and EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 3,600 m³/day, and the actual discharge volume is 515.57 m³/day, indicating operational capacity well within design limits. The treated effluent is discharged into the local watershed, which ultimately drains into the Saône River, a major tributary of the Rhône River. The Rhône flows into the Mediterranean Sea. The plant's operations help protect the water quality of the Saône and downstream ecosystems, supporting aquatic life and regional water resources.

The plant discharges into the local watershed that feeds the Saône River, a key tributary of the Rhône River. The Rhône flows into the Mediterranean Sea, supporting diverse aquatic habitats and migratory fish species. The region's agricultural and urban areas rely on the Saône's water quality, making effective treatment essential for ecological balance.