Orgelet Wastewater Treatment Plant, Orgelet, Bourgogne-Franche-Comté, France

The Orgelet wastewater treatment plant is located in the commune of Orgelet, within the Jura department of Bourgogne-Franche-Comté, France. It serves a population of approximately 2,333 residents, classifying it as a small agglomeration under French and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity of 4,350 m³/day indicates significant headroom for future growth or seasonal variations. The facility operates under the French regulatory framework, which implements the EU directive through national legislation, ensuring compliance with discharge standards. The treated effluent is discharged into local watercourses that ultimately drain into the Rhône basin, contributing to the water quality of the region. The plant plays a key role in protecting the sensitive aquatic ecosystems of the Jura region, which support diverse freshwater species and are important for regional biodiversity.

The Orgelet plant discharges into local streams that flow into the Ain River, a major tributary of the Rhône. The Rhône River drains into the Mediterranean Sea, making this plant part of a large transboundary basin. The Jura region features karstic geology and sensitive groundwater systems, so advanced treatment helps protect downstream aquatic habitats and drinking water sources.