MARIGNY jura Wastewater Treatment Plant, La Chaux-du-Dombief, France

MARIGNY jura is an advanced wastewater treatment plant located in La Chaux-du-Dombief, in the Jura department of Bourgogne-Franche-Comté, France. The plant serves a population of around 3,243, classifying it as a small agglomeration under French and EU regulations. It is situated near the town of Saint-Claude, in a region known for its forests and lakes. The plant 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. With a designed capacity of 4,000 cubic meters per day and a current discharge volume of 578.55 cubic meters per day, the facility operates well within its capacity. As a French plant, it is subject to national regulations implementing the EU directive, ensuring high environmental standards. The treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River basin via the Ain River. This region is ecologically sensitive, supporting diverse aquatic life and contributing to the water quality of downstream ecosystems. The advanced treatment helps protect the receiving water bodies from nutrient pollution and other contaminants.

The plant discharges into the local watershed, which flows into the Ain River, a tributary of the Rhône River. The Rhône eventually reaches the Mediterranean Sea. The Jura region is characterized by karst landscapes and rich biodiversity, including protected fish species. The advanced treatment ensures minimal impact on the sensitive downstream environment.