Overview
TREBES wastewater treatment plant serves Trèbes, Occitanie, France, with a population of 11,330. It operates under the EU Urban Waste Water Treatment Directive.
The TREBES wastewater treatment plant is located in Trèbes, a commune in the Aude department of Occitanie, southern France. Serving a population of approximately 11,330, the plant is part of the municipal wastewater infrastructure for the Carcassonne urban area. The facility is situated inland, more than 50 km from the coast, and its operations are governed by French and European regulations. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent between 10,000 and 150,000 are required to provide secondary treatment as a minimum. For sensitive areas, more stringent treatment may be mandated. It is expected to comply with these standards. The treated effluent from the plant is discharged into the local watershed, which ultimately drains into the Mediterranean Sea via the Aude River. The Aude River supports diverse aquatic life and is an important ecological corridor in the region. The plant's operation helps protect downstream water quality and the sensitive coastal environment of the Gulf of Lion.
Environmental context
The TREBES plant discharges into the Aude River basin, which flows into the Mediterranean Sea near Narbonne. The Aude River supports a variety of fish species and provides habitat for migratory birds. The downstream coastal area includes ecologically sensitive zones that benefit from reduced nutrient and pollutant loads from upstream treatment.
Frequently asked questions
The TREBES plant is located in Trèbes, a commune in the Aude department of Occitanie, southern France, near the city of Carcassonne.
The plant serves a population of approximately 11,330 people in Trèbes and surrounding areas.
Treated effluent from the plant is discharged into the local watershed, which flows into the Aude River and eventually reaches the Mediterranean Sea.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size, with possible tertiary requirements in sensitive areas.
Under the EU UWWTD, plants serving 10,000 to 150,000 population equivalent are required to have at least secondary treatment. French regulations align with this, and many plants also incorporate nutrient removal to protect sensitive water bodies.
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