SAINT SYMPHORIEN D ANCELLES Wastewater Treatment Plant, Saint-Romain-des-Îles, France

The SAINT SYMPHORIEN D ANCELLES wastewater treatment plant is located in Saint-Romain-des-Îles, within the commune of Saint-Symphorien-d'Ancelles, in the Saône-et-Loire department of Bourgogne-Franche-Comté, France. The plant serves a population equivalent of 15,866, placing it in the medium agglomeration category under French regulations. As a French wastewater facility, the plant operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity details are managed by the local authority to ensure compliance with national and EU standards. The plant discharges treated effluent into local watercourses that ultimately drain into the Saône River, a major tributary of the Rhône River. The Rhône flows into the Mediterranean Sea, making the plant's operations important for protecting downstream aquatic ecosystems and coastal water quality. The region's watershed supports diverse freshwater habitats and agricultural activities.

The plant's treated effluent enters the local hydrology, eventually reaching the Saône River, which flows into the Rhône River and then the Mediterranean Sea. This watershed supports a variety of aquatic life and is used for irrigation and recreation. The plant's discharge must meet EU standards to protect downstream water quality and ecological health, particularly in sensitive areas that may be affected by nutrient loading.