Overview
Allex Grane wastewater treatment plant serves approximately 30,050 people in Allex, Auvergne-Rhône-Alpes, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Allex Grane is a wastewater treatment plant located in Allex, a commune in the Drôme department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of around 30,050, classifying it as a medium agglomeration under EU regulations. Its location near the Drôme River places it within the Rhône basin, a major hydrological system in Europe. As a French wastewater facility, Allex Grane operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The regulatory framework ensures compliance with national and EU standards. The treated effluent from Allex Grane is discharged into the local watershed, which ultimately drains into the Drôme River and then the Rhône River. The Rhône flows into the Mediterranean Sea, making the plant's operations important for protecting downstream aquatic ecosystems and coastal water quality. The region supports diverse freshwater habitats and migratory fish species.
Environmental context
Allex Grane discharges into the Drôme River, a tributary of the Rhône River, which flows into the Mediterranean Sea. The Drôme River supports diverse aquatic life, including fish species such as brown trout and European eel. The plant's location in the Rhône basin means its effluent quality directly affects downstream ecosystems and the sensitive coastal environment of the Camargue delta. Proper treatment helps maintain water quality and ecological balance in this important river system.
Frequently asked questions
Allex Grane is located in Allex, a commune in the Drôme department of the Auvergne-Rhône-Alpes region in southeastern France. The address is Chemin de Chanteperdrix, Allex, 26400.
The plant serves approximately 30,050 people, classifying it as a medium agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which flows into the Drôme River, a tributary of the Rhône River, ultimately reaching the Mediterranean Sea.
As a French wastewater facility, Allex Grane operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of its size and may require more stringent treatment if the receiving waters are sensitive.
Under the EU UWWTD, plants serving between 10,000 and 150,000 population equivalent are required to have secondary treatment. In France, many such plants also incorporate nutrient removal to protect sensitive water bodies like the Rhône River.
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