Overview
Saint-Symphorien-sur-Coise wastewater treatment plant serves approximately 14,400 people in Auvergne-Rhône-Alpes, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this sc
The Saint-Symphorien-sur-Coise wastewater treatment plant is located in the commune of Saint-Symphorien-sur-Coise, within the Auvergne-Rhône-Alpes region of France. The facility serves a population of approximately 14,400 residents, classifying it as a medium-sized agglomeration under EU regulations. As a French wastewater treatment plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity are designed to meet these regulatory standards. The treated effluent from the plant is discharged into local watercourses that eventually drain into the Rhône River basin. The Rhône River flows southward into the Mediterranean Sea, supporting diverse aquatic ecosystems along its course. The plant plays a crucial role in protecting downstream water quality and the ecological health of the region's waterways.
Environmental context
The plant discharges into local streams that are part of the Rhône River basin. The Rhône River flows through southeastern France into the Mediterranean Sea, supporting diverse aquatic life and important migratory fish species. The region's watershed is ecologically sensitive, with the river providing habitat for species such as the European eel and various freshwater mussels. The plant's treatment performance is critical to maintaining water quality in this downstream environment.
Frequently asked questions
The plant is located at Chemin de la Bourdinière, Côte Rouge, Bourdinière, Saint-Symphorien-sur-Coise, in the Rhône department of the Auvergne-Rhône-Alpes region, France.
The plant serves approximately 14,400 residents, classifying it as a medium-sized agglomeration under EU regulations.
The treated effluent is discharged into local watercourses that are part of the Rhône River basin, eventually flowing into the Mediterranean Sea.
As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size and more stringent treatment if the receiving waters are sensitive.
Under the EU UWWTD, agglomerations between 10,000 and 150,000 PE are required to have at least secondary treatment. In sensitive areas, tertiary treatment may be mandated to reduce nutrients like nitrogen and phosphorus.
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