CAJARC Wastewater Treatment Plant, Cajarc, Occitanie, France

The CAJARC wastewater treatment plant is located in Cajarc, a commune in the Lot department of Occitanie, southern France. Serving a population of approximately 2,000, this facility is part of the region's municipal wastewater infrastructure, managed under French water law and the EU Urban Waste Water Treatment Directive. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU directive for agglomerations of this size. With a designed capacity of 3,500 m³/day and an average discharge volume of 356.80 m³/day, the facility operates well within its capacity, ensuring effective treatment of local wastewater. The treated effluent is discharged into a local watercourse that ultimately flows into the Lot River, a tributary of the Garonne. This river system supports diverse aquatic life and is important for regional water quality. The plant's advanced treatment helps protect downstream ecosystems and water resources.

The plant discharges into a tributary of the Lot River, which flows into the Garonne River and eventually reaches the Atlantic Ocean via the Gironde estuary. The Lot River valley supports a variety of freshwater species and is an important ecological corridor. Advanced treatment at this plant helps minimize nutrient and pollutant loads, protecting the river's water quality and biodiversity.