Overview
GRIGNAN wastewater treatment plant serves 2,600 people in Grignan, Auvergne-Rhône-Alpes, France. It provides secondary treatment and discharges 463.84 m³/day, operating under the EU Urban Waste Water Treatment Directive.
The GRIGNAN wastewater treatment plant is located in Grignan, a commune in the Drôme department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of approximately 2,600 residents, classifying it as a small agglomeration under EU regulations. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 2,200 m³/day, and the current discharge volume is 463.84 m³/day, indicating operational headroom. The treated effluent is discharged into local waterways that ultimately drain into the Rhône River basin, a major European river flowing into the Mediterranean Sea. The plant's operation helps protect the local aquatic environment and downstream ecosystems.
Environmental context
The plant discharges into the local watershed of the Lez River, a tributary of the Rhône River. The Rhône flows into the Mediterranean Sea, supporting diverse aquatic life and important migratory fish species. The region's Mediterranean climate and agricultural landscape make water quality management critical for both ecological health and human use.
Frequently asked questions
The plant is located at Le Cabare, Chemin de la Petite Tuiliere, Grignan, in the Drôme department of the Auvergne-Rhône-Alpes region, France.
The plant serves approximately 2,600 people, classifying it as a small agglomeration under EU regulations.
The plant provides secondary treatment and discharges treated effluent into local waterways that flow into the Lez River, a tributary of the Rhône River, which ultimately reaches the Mediterranean Sea.
As a French wastewater treatment plant, GRIGNAN operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for freshwater discharges from agglomerations of this size.
For small agglomerations in France, secondary treatment is the standard requirement under the EU UWWTD, ensuring effective removal of organic matter and suspended solids before discharge.
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