Overview
Morillon Samoens wastewater treatment plant serves 22,124 people in Morillon, Auvergne-Rhône-Alpes, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Morillon Samoens wastewater treatment plant is located in the commune of Morillon, in the Haute-Savoie department of the Auvergne-Rhône-Alpes region, France. It serves a population of 22,124, classifying it as a medium agglomeration under EU regulations. The plant is situated in the Alpine foothills, near the Giffre River valley. As a French wastewater facility serving over 10,000 people, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges into freshwater bodies. The designed capacity of 1.00 (likely in thousands of cubic meters per day) indicates a facility sized for its population equivalent. French regulations also mandate compliance with national water quality standards set by the Agence de l'Eau Rhône-Méditerranée-Corse. The treated effluent from the plant is discharged into the local watershed, which drains into the Giffre River, a tributary of the Arve River. The Arve flows into the Rhône River near Geneva, ultimately reaching the Mediterranean Sea. The receiving waters support diverse aquatic life and are important for regional biodiversity, including fish species such as brown trout and grayling.
Environmental context
The plant's discharge enters the Giffre River, a tributary of the Arve River, which flows into the Rhône River near Geneva. The Rhône then drains into the Mediterranean Sea. The Alpine watershed is ecologically sensitive, supporting cold-water fish species and riparian habitats. The plant's location upstream of Lake Geneva (Lac Léman) means that nutrient removal is important to prevent eutrophication in downstream water bodies.
Frequently asked questions
The plant is located in Morillon, in the Haute-Savoie department of the Auvergne-Rhône-Alpes region, France. Its address is Les Miaux, Bois Champelle, Morillon.
The plant serves a population of 22,124 people, classifying it as a medium agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which drains into the Giffre River, a tributary of the Arve River, and ultimately into the Rhône River and the Mediterranean Sea.
As a French plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for freshwater discharges. It also complies with French national water quality standards set by the Agence de l'Eau Rhône-Méditerranée-Corse.
Under the EU Urban Waste Water Treatment Directive, agglomerations between 10,000 and 150,000 population equivalent are required to have secondary treatment (biological treatment) for discharges into freshwater. Some plants may also have tertiary treatment if discharging into sensitive areas.
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