Overview
Thezan-les-Beziers Chef Lieu is an advanced wastewater treatment plant in Occitanie, France, serving 2,800 people. It discharges treated water inland, with a design capacity of 4,000 m³/day.
Thezan-les-Beziers Chef Lieu is a municipal wastewater treatment plant located in Thezan-les-Beziers, a commune in the Herault department of Occitanie, southern France. The plant serves a population of approximately 2,800 residents and is situated inland, more than 10 km from the Mediterranean coast. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a design capacity of 4,000 m³/day and a current discharge volume of 499.52 m³/day, the facility operates well within its capacity, ensuring effective treatment of local wastewater. The treated effluent is discharged into a local watercourse that ultimately drains into the Mediterranean Sea via the Orb River or its tributaries. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems, and maintaining the environmental health of the downstream watershed.
Environmental context
The plant discharges into a local stream that flows into the Orb River, which then reaches the Mediterranean Sea near Valras-Plage. The Orb River supports diverse aquatic life and is an important corridor for migratory fish. The advanced treatment helps minimize nutrient and pollutant loads, protecting the coastal marine environment from eutrophication and other ecological impacts.
Frequently asked questions
The plant is located at Chemin de la Plaine, Thezan-les-Beziers, in the Herault department of Occitanie, southern France.
The plant serves approximately 2,800 residents of Thezan-les-Beziers and surrounding areas.
The treated effluent is discharged into a local watercourse that flows into the Orb River, eventually 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 French transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment based on population served and receiving water sensitivity.
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