LAVANS LES ST CLAUDE Wastewater Treatment Plant, Lavans-lès-Saint-Claude, France

The LAVANS LES ST CLAUDE wastewater treatment plant is located in Lavans-lès-Saint-Claude, a commune in the Jura department of Bourgogne-Franche-Comté, France. The plant serves a population of 2,250 and is designed to handle a capacity of 2,300 m³ per day, with a current discharge volume of 401.40 m³ per day. The facility employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. This level of treatment is typically implemented in sensitive areas to reduce nutrient loads and protect receiving water bodies. The plant discharges treated effluent into the local watershed, which ultimately drains into the Rhône basin via the Bienne River and the Ain River. The advanced treatment helps safeguard the ecological quality of these rivers, which support diverse aquatic life and are important for regional biodiversity.

The plant's treated effluent flows into the Bienne River, a tributary of the Ain River, which joins the Rhône River. The Rhône is a major European river that empties into the Mediterranean Sea. The advanced treatment at this plant reduces nutrient and pollutant loads, protecting the aquatic ecosystems of the Bienne and Ain rivers, which are important for fish migration and support a variety of freshwater species.