Overview
The ILE D OLONNE Chemin de l Ileau wastewater treatment plant serves L'Île-d'Olonne, France, with secondary treatment for a population of 4,100. It discharges treated water near the Atlantic coast.
The ILE D OLONNE Chemin de l Ileau wastewater treatment plant is located in L'Île-d'Olonne, a coastal commune in the Vendée department of Pays de la Loire, France. The plant serves a population of approximately 4,100 people and operates as part of the municipal wastewater infrastructure for the Les Sables-d'Olonne agglomeration. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent (PE) between 2,000 and 10,000, ensuring organic matter and suspended solids are reduced to acceptable levels before discharge. Situated within 10 km of the Atlantic coast, the plant's treated effluent ultimately reaches the Bay of Biscay. The local watershed includes coastal wetlands and estuaries that support diverse aquatic life, making proper treatment essential to protect marine ecosystems and recreational waters along the Vendée coastline.
Environmental context
The plant discharges treated wastewater into the local watershed, which drains into the Atlantic Ocean via the Bay of Biscay. The coastal environment includes sensitive estuarine habitats and intertidal zones that support migratory birds and marine species. Proper treatment is critical to prevent nutrient enrichment and protect water quality in this ecologically productive region.
Frequently asked questions
The plant is located in L'Île-d'Olonne, a coastal commune in the Vendée department of Pays de la Loire, France. It serves the Les Sables-d'Olonne agglomeration.
The plant serves a population of approximately 4,100 people.
The plant provides secondary treatment and discharges treated effluent into the local watershed, which ultimately reaches the Atlantic Ocean via the Bay of Biscay.
The plant protects local streams and coastal waters that drain into the Bay of Biscay, helping to maintain water quality in the Vendée coastline and its estuarine habitats.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent between 2,000 and 10,000. This ensures organic matter and suspended solids are reduced before discharge into sensitive coastal areas.
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