The drought situation in Viroflay is maintained in the enhanced alert zone. Following the latest hydrological measurements, the Yvelines Prefecture has issued a new decree, n° 78-2026-10-09-00002, which adjusts water restrictions across the department.
Although a slight increase in river flow has been observed in the southeastern part of the department, allowing for the lifting of the alert in that area, the absence of significant rainfall expected in the next two weeks does not permit easing measures in other territories. Viroflay, attached to the Seine zone, therefore remains on enhanced alert.
In the Yvelines, the distribution of restriction levels is as follows: Enhanced alert for the Seine zone (including Viroflay), Alert for the Centre and West zones, and Vigilance for the Southeast, Southwest, and North zones.
A collective effort towards sobriety in water usage remains essential for individuals, professionals, and local authorities. Derogations are maintained for certain specific agricultural activities, such as market gardening, horticulture, and arboriculture, the detailed list of which is available on the State services website.
To precisely know the restrictions applicable to your home or place of activity, the government platform VigiEau (vigieau.gouv.fr) allows you to consult the current measures by entering your address or using geolocation.
The full information, prefectural decrees, and resource management advice are also available on the Yvelines Prefecture's website.
