Overview
Ceillac wastewater treatment plant serves the alpine commune of Ceillac in Provence-Alpes-Côte d'Azur, France. It provides secondary treatment for a population of 2,417 with a designed capacity of 3,250 m³/day.
The Ceillac wastewater treatment plant is located in the alpine commune of Ceillac, within the Hautes-Alpes department of Provence-Alpes-Côte d'Azur, France. It serves a population of approximately 2,417 residents, typical of a small mountain community. The plant is situated in the Ubac de l'Aval area near the Route de Laval. As a secondary treatment facility, Ceillac meets the minimum requirements under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for discharges into freshwater and estuaries from populations between 2,000 and 10,000. The plant's designed capacity of 3,250 m³/day accommodates seasonal tourist fluctuations common in alpine resorts. The treated effluent is discharged into the local watershed, which ultimately drains into the Durance River, a major tributary of the Rhône. The Durance supports diverse aquatic life and is an important water resource for irrigation and hydroelectric power in the region. The plant's operation helps protect the sensitive alpine ecosystem and downstream water quality.
Environmental context
The plant discharges into the local stream network that feeds the Durance River, a major tributary of the Rhône River, which flows into the Mediterranean Sea. The Durance basin supports diverse aquatic life, including fish species such as brown trout and the endangered European eel. The alpine watershed is ecologically sensitive, with seasonal snowmelt influencing flow regimes and nutrient dynamics.
Frequently asked questions
The Ceillac wastewater treatment plant is located in the commune of Ceillac, in the Hautes-Alpes department of Provence-Alpes-Côte d'Azur, France. The address is Route de Laval, L'Ubac de l'Aval, Ceillac.
The plant serves a population of 2,417 people, typical of a small alpine community. This population may increase during tourist seasons due to the area's popularity for skiing and hiking.
The plant provides secondary treatment, which involves biological processes to remove organic matter and suspended solids. This level of treatment meets the EU Urban Waste Water Treatment Directive requirements for agglomerations of this size.
The treated effluent is discharged into the local watershed, which flows into the Durance River, a major tributary of the Rhône River. The Durance eventually reaches the Mediterranean Sea.
As a French plant serving fewer than 10,000 people, Ceillac operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for freshwater discharges from agglomerations of 2,000 to 10,000 population equivalent.
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