Overview
CRAN GEVRIER SILOE is a wastewater treatment plant serving Annecy, France, with a population equivalent of 232,392. It operates under the EU Urban Waste Water Treatment Directive, which mandates advanced treatment for sensitive areas like Lake Annecy
CRAN GEVRIER SILOE is a major wastewater treatment plant located in the Annecy metropolitan area, within the Auvergne-Rhone-Alpes region of France. Serving a population of over 230,000, it is classified as a large agglomeration under European Union regulations. The plant is situated near Lake Annecy, one of the largest natural lakes in France, and plays a critical role in protecting this ecologically sensitive water body. As a large-scale facility in a sensitive catchment, CRAN GEVRIER SILOE is expected to provide tertiary treatment including phosphorus and nitrogen removal under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant's designed capacity of 1.00 likely refers to a specific unit or is a placeholder, but the facility is designed to handle the high load from the urban population. French wastewater plants are regulated by the Ministry of Ecological Transition and must comply with national standards derived from EU directives. The treated effluent from the plant discharges into the Thiou River, which flows into Lake Annecy, a renowned alpine lake known for its clear waters and biodiversity. Lake Annecy is a major recreational and ecological asset, supporting diverse aquatic life and serving as a drinking water source. The plant's performance is crucial for maintaining the lake's water quality and preventing eutrophication.
Environmental context
The plant discharges into the Thiou River, which flows into Lake Annecy, a deep alpine lake in the Rhone basin. Lake Annecy is a sensitive ecosystem with strict water quality standards due to its use for recreation and drinking water. The lake supports diverse aquatic life, including fish species like Arctic char and whitefish, and is a key migratory corridor for birds. Downstream, the lake's outlet forms the Fier River, which eventually joins the Rhone River and flows to the Mediterranean Sea.
Frequently asked questions
CRAN GEVRIER SILOE is located in the Annecy metropolitan area, specifically in the Meythet district of Annecy, in the Haute-Savoie department of the Auvergne-Rhone-Alpes region, France.
The plant serves a population equivalent of 232,392, classifying it as a large agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the Thiou River, which flows into Lake Annecy, a sensitive alpine lake. The plant is expected to provide tertiary treatment to protect the lake's water quality.
As a French plant serving over 150,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas like Lake Annecy.
Plants of this scale in France typically provide tertiary treatment including biological nutrient removal (phosphorus and nitrogen) to meet strict effluent standards, especially when discharging into sensitive water bodies like Lake Annecy.
Nearby plants