Overview
ORVAL Impasse du gardon is an advanced wastewater treatment plant in Orval, Centre-Val de Loire, France, serving a population of 1,666. It discharges 297.21 m³/day of treated effluent.
ORVAL Impasse du gardon is a wastewater treatment facility located in Orval, a commune in the Cher department of Centre-Val de Loire, France. The plant serves a population equivalent of 1,666 and has a designed capacity of 2,300 m³/day, with an average discharge volume of 297.21 m³/day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a French facility, it operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment levels based on the sensitivity of receiving waters and population size. The treated effluent is discharged into the local watershed, which ultimately drains into the Loire River basin. The Loire is France's longest river and supports diverse aquatic ecosystems, including migratory fish species. The plant's advanced treatment helps protect water quality in this ecologically significant river system.
Environmental context
The plant discharges into the Cher River, a tributary of the Loire River. The Loire basin is one of Europe's last wild river systems, supporting diverse aquatic life and important migratory corridors for species such as Atlantic salmon and European eel. Advanced treatment at this plant helps reduce nutrient loading, protecting downstream water quality in the Loire estuary and the Bay of Biscay.
Frequently asked questions
The plant is located on D 300 in Orval, near Saint-Amand-Montrond, in the Cher department of Centre-Val de Loire, France.
The plant serves a population equivalent of 1,666, making it a small agglomeration under the EU Urban Waste Water Treatment Directive.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment, helping to protect sensitive receiving waters.
As a French plant serving fewer than 2,000 people, it is classified as a small agglomeration. The EU directive requires appropriate treatment based on the sensitivity of the receiving water; advanced treatment indicates the Cher River or downstream Loire may be designated as sensitive.
The plant has a designed capacity of 2,300 m³/day, with an average discharge of 297.21 m³/day, indicating significant spare capacity for future growth.
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