Overview
CHOMERAC wastewater treatment plant in Chomérac, Auvergne-Rhône-Alpes, France, serves 3,300 people with advanced treatment and a designed capacity of 4,000 m³/day.
The CHOMERAC wastewater treatment plant is located in the commune of Chomérac, within the Ardèche department of the Auvergne-Rhône-Alpes region in southeastern France. It serves a population of approximately 3,300 residents, classifying it as a small to medium agglomeration under French and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity is 4,000 m³/day, with a reported discharge volume of 588.71 m³/day, indicating operational headroom. The facility is operated as part of the municipal wastewater infrastructure managed by local authorities. Treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River basin. The Rhône is one of Europe's major rivers, flowing into the Mediterranean Sea. The advanced treatment level helps protect downstream aquatic ecosystems and supports water quality in the sensitive Mediterranean coastal zone.
Environmental context
The plant discharges into the Ardèche River system, a tributary of the Rhône River. The Rhône flows southward through the Camargue delta into the Mediterranean Sea. This region supports diverse aquatic life, including migratory fish species such as the European eel. Advanced treatment reduces nutrient loads, helping to prevent eutrophication in downstream water bodies and the marine environment.
Frequently asked questions
The CHOMERAC plant is located on Route de Saint-Symphorien in Chomérac, Ardèche, Auvergne-Rhône-Alpes, France.
The plant serves approximately 3,300 residents, classifying it as a small to medium agglomeration under EU regulations.
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.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent above 2,000 must have at least secondary treatment. CHOMERAC's advanced treatment goes beyond this requirement, providing additional nutrient removal to protect sensitive receiving waters.
The plant has a designed capacity of 4,000 m³ per day, with a reported discharge volume of 588.71 m³ per day, indicating it operates well below its maximum capacity.
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