Overview
CASTELNAU DE GUERS wastewater treatment plant serves Castelnau-de-Guers, Occitanie, France. It provides advanced treatment for a population of 1,100 with a designed capacity of 3,400 m³/day.
The CASTELNAU DE GUERS wastewater treatment plant is located in Castelnau-de-Guers, a commune in the Hérault department of Occitanie, southern France. The facility serves a population of approximately 1,100 people and is part of the region's municipal wastewater infrastructure. 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 designed capacity of 3,400 m³/day and an average daily discharge volume of 196.24 m³, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Mediterranean Sea via the Hérault River and its tributaries. The plant's advanced treatment helps protect the sensitive coastal and marine environments of the Gulf of Lion, supporting biodiversity and water quality in the region.
Environmental context
The plant's discharge enters the Hérault River basin, which flows into the Mediterranean Sea near the Gulf of Lion. This coastal area supports diverse marine life, including seagrass meadows and fish nurseries. Advanced treatment reduces nutrient loads, helping to prevent eutrophication in the sensitive coastal waters.
Frequently asked questions
The plant is located at Moulin de Conas, Avenue de la Barrière, Castelnau-de-Guers, in the Hérault department of Occitanie, France.
The plant serves approximately 1,100 people in the commune of Castelnau-de-Guers and surrounding areas.
The treated effluent is discharged into the local watershed, which flows into the Hérault River and eventually reaches the Mediterranean Sea.
The plant provides advanced treatment, which exceeds the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for small agglomerations.
As a French plant serving fewer than 2,000 people, it operates under national regulations implementing the EU Urban Waste Water Treatment Directive, which mandates appropriate treatment to protect receiving waters.
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