Overview
Aix Ouest wastewater treatment plant serves Aix-en-Provence, France, with a population equivalent of 26,359. The facility operates under the EU Urban Waste Water Treatment Directive, ensuring compliance with secondary treatment standards for medium a
Aix Ouest is a municipal wastewater treatment plant located in Aix-en-Provence, in the Provence-Alpes-Côte d'Azur region of southern France. The plant serves a population of approximately 26,359 people, classifying it as a medium agglomeration under EU regulations. Its location near the Arc River basin places it within a Mediterranean climate zone, where water resources are seasonally stressed. As a French facility, Aix Ouest operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. French wastewater plants are typically regulated by the Agence de l'Eau and must meet national standards for effluent quality before discharge. The treated effluent from Aix Ouest ultimately drains into the Arc River, which flows into the Étang de Berre, a large lagoon connected to the Mediterranean Sea. This water body supports diverse aquatic life and is an important ecological zone for migratory birds and fish species. The plant's operations contribute to protecting the local watershed from nutrient pollution and maintaining water quality in the downstream environment.
Environmental context
Aix Ouest discharges treated wastewater into the Arc River, which flows into the Étang de Berre, a coastal lagoon on the Mediterranean Sea. The Étang de Berre is an ecologically sensitive area that supports diverse aquatic life, including fish and bird species, and serves as a critical habitat in the region. The plant's treatment performance directly affects the water quality of this lagoon, which is subject to eutrophication risks from nutrient inputs.
Frequently asked questions
Aix Ouest is located in Aix-en-Provence, in the Bouches-du-Rhône department of the Provence-Alpes-Côte d'Azur region, southern France. The address is Route du Petit Moulin, Clos Marie-Louise, Aix-en-Provence.
The plant serves a population equivalent of 26,359 people, classifying it as a medium agglomeration under EU regulations.
The treated effluent is discharged into the Arc River, which flows into the Étang de Berre lagoon and eventually reaches the Mediterranean Sea.
As a French plant, Aix Ouest operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. National regulations enforced by the Agence de l'Eau ensure compliance with effluent standards.
For medium agglomerations (10,000-100,000 PE) in France, secondary treatment is standard, often involving biological processes like activated sludge. In sensitive areas, tertiary treatment may be required to reduce nutrients.
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