Overview
SAINT CHRISTOPHE SUR GUIERS is a secondary wastewater treatment plant serving 2,700 people in Saint-Christophe La Grotte, France. It discharges treated water into the local watershed in the Auvergne-Rhône-Alpes region.
SAINT CHRISTOPHE SUR GUIERS is a municipal wastewater treatment plant located in Saint-Christophe La Grotte, within the commune of Saint-Christophe-sur-Guiers in the Isère department of Auvergne-Rhône-Alpes, France. The plant serves a population of approximately 2,700 and operates under the French regulatory framework, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, a standard level for small agglomerations under the directive. Its designed capacity is 1,350 cubic meters per day, with an average daily discharge volume of about 482 cubic meters, indicating a utilization rate well below capacity. The facility is situated inland, more than 50 kilometers from the coast, reducing direct marine impact. The treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River basin. The Rhône is a major European river that flows into the Mediterranean Sea, supporting diverse aquatic ecosystems. The plant's operations help protect downstream water quality in this ecologically significant region.
Environmental context
The plant discharges into the Guiers River, a tributary of the Rhône River. The Rhône flows through southeastern France into the Mediterranean Sea, supporting diverse aquatic life and important migratory corridors. The watershed is ecologically sensitive, with habitats for fish species such as the European eel and various freshwater mussels. The plant's secondary treatment reduces organic pollutants, helping maintain water quality in this dynamic river system.
Frequently asked questions
The plant is located at D 520, Saint-Christophe La Grotte, in the commune of Saint-Christophe-sur-Guiers, Isère department, Auvergne-Rhône-Alpes, France.
The plant serves approximately 2,700 people in the local community.
The plant discharges treated effluent into the Guiers River, a tributary of the Rhône River, which flows into the Mediterranean Sea.
The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive for agglomerations of this size.
The plant operates under French national regulations implementing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for small agglomerations and sets discharge standards to protect water quality.
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