Overview
PEZENAS wastewater treatment plant serves Pézenas, Occitanie, France. It treats wastewater for approximately 24,400 people under the EU Urban Waste Water Treatment Directive.
The PEZENAS wastewater treatment plant is located in Pézenas, a commune in the Hérault department of Occitanie, southern France. The facility serves a population of approximately 24,400, classifying it as a medium-sized agglomeration under EU regulations. It is situated near the coastal region of the Mediterranean Sea, though more than 50 km inland. As a French plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. For agglomerations of this size in sensitive areas, tertiary treatment may be mandated to reduce nutrient loads. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar units), indicating a moderate scale of operations. The treated effluent from the plant discharges into the local watershed, which ultimately drains into the Mediterranean Sea via the Hérault River or its tributaries. This coastal drainage system supports diverse aquatic life and is ecologically sensitive to nutrient pollution. The plant plays a key role in protecting downstream water quality and marine ecosystems.
Environmental context
The plant's receiving waters flow through the Hérault River basin, which empties into the Gulf of Lion in the Mediterranean Sea. This coastal zone supports seagrass meadows and fish nurseries, making it sensitive to eutrophication from nutrient discharges. The region's Mediterranean climate, with dry summers and heavy autumn rains, can stress treatment systems and increase runoff risks.
Frequently asked questions
The PEZENAS plant is located at Chemin de l'Amandier, in the SICTOM Pézenas-Agde area, near Pézenas, Hérault, Occitanie, France.
The plant serves approximately 24,400 people, classifying it as a medium-sized agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which flows into the Hérault River and eventually reaches the Mediterranean Sea.
As a French plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and potentially tertiary treatment in sensitive areas.
For agglomerations of this size, secondary treatment is standard, with tertiary treatment required if the receiving waters are sensitive to nutrient pollution, such as coastal zones.
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