Beauchastel Wastewater Treatment Plant, La Voulte-sur-Rhône, France

The Beauchastel wastewater treatment plant is located in La Voulte-sur-Rhône, within the Auvergne-Rhône-Alpes region of France. It serves a population of 4,440, classifying it as a small to medium agglomeration under French regulations. The plant employs advanced treatment processes, ensuring a high level of pollutant removal. With a designed capacity of 2,500 m³/day and an average discharge volume of 792.09 m³/day, it operates well within its capacity. As a French facility, it complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment as a minimum and tertiary treatment in sensitive areas. The treated effluent is discharged into the Rhône River, a major European waterway that flows into the Mediterranean Sea. The plant plays a key role in protecting the Rhône's water quality and the downstream ecosystems, including the Camargue delta and the Gulf of Lion.

The plant discharges into the Rhône River, which flows south through France to the Mediterranean Sea. The Rhône basin supports diverse aquatic life and is an important migratory corridor for fish. The advanced treatment helps reduce nutrient loading, protecting downstream waters from eutrophication.