Overview
LARNAS Communale is an advanced wastewater treatment plant in Larnas, Auvergne-Rhône-Alpes, France. It serves a population of 2,325 and has a designed capacity of 3,500 m³/day.
LARNAS Communale is a wastewater treatment facility located in the village of Larnas, within the Ardèche department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of approximately 2,325 people and is designed to handle a capacity of 3,500 cubic meters per day. The plant employs advanced treatment processes, which go beyond the secondary treatment requirements mandated by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. This level of treatment is typically required in sensitive areas to reduce nutrient loads and protect receiving water bodies. The treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River basin. The Ardèche region is known for its karst landscapes and sensitive aquatic ecosystems, making advanced treatment important for preserving water quality in downstream environments.
Environmental context
The plant discharges into the local watershed within the Ardèche River basin, a tributary of the Rhône River. The Rhône flows into the Mediterranean Sea via the Camargue delta, a ecologically significant area that supports diverse aquatic life and migratory bird populations. Advanced treatment helps minimize nutrient and pollutant loads, protecting downstream ecosystems.
Frequently asked questions
LARNAS Communale is located in the village of Larnas, in the Ardèche department of the Auvergne-Rhône-Alpes region, southeastern France.
The plant serves a population of approximately 2,325 people.
The treated effluent is discharged into the local watershed, which flows into the Ardèche River and eventually the Rhône River, reaching the Mediterranean Sea.
The plant provides advanced treatment, which exceeds the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for agglomerations of this size.
The plant operates under the EU Urban Waste Water Treatment Directive, transposed into French law, which mandates appropriate treatment levels based on population size and receiving water sensitivity.
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