Overview
IZEAUX SILLANS 2 is an advanced wastewater treatment plant in Sillans, Auvergne-Rhône-Alpes, France, serving 2,700 people. It discharges 481.68 m³/day of treated effluent into the local watershed.
IZEAUX SILLANS 2 is an advanced wastewater treatment facility located in Sillans, within the Isère department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of approximately 2,700 residents and has a designed capacity of 5,000 m³/day, with a current discharge volume of 481.68 m³/day. As an advanced treatment plant, it provides a higher level of pollutant removal beyond secondary treatment, which is typical for facilities in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant's scale places it in the small agglomeration category, for which secondary treatment is generally required, but the advanced level indicates additional nutrient or micropollutant removal. The treated effluent from IZEAUX SILLANS 2 is discharged into the local water system, which ultimately drains into the Rhône River basin. The Rhône is one of Europe's major rivers, flowing into the Mediterranean Sea. The plant's operations help protect downstream aquatic ecosystems and support the ecological health of the region's waterways.
Environmental context
The plant discharges into a tributary of the Rhône River, which flows southward through the Rhône Valley and into the Mediterranean Sea. The Rhône basin supports diverse aquatic life and is an important migratory corridor for fish species. Advanced treatment at this plant helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream water bodies and the Mediterranean coastal zone.
Frequently asked questions
IZEAUX SILLANS 2 is located in Sillans, in the Isère department of the Auvergne-Rhône-Alpes region, southeastern France.
The plant serves a population of approximately 2,700 residents.
The plant discharges treated effluent into a local water body that is part of the Rhône River basin, which ultimately flows into the Mediterranean Sea.
IZEAUX SILLANS 2 provides advanced treatment, which goes beyond secondary treatment to remove additional nutrients and pollutants, in line with EU standards for sensitive areas.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations like Sillans (2,700 people) typically require secondary treatment. The advanced treatment at this plant suggests it is in a sensitive area requiring higher removal of nutrients or micropollutants.
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