Southern Nevada Water Authority Winter Watering Guidelines

Mandatory Winter Seasonal Watering Restrictions in Effect November 1
For more information, visit

As the short days and chilly temperatures of winter make their way into Southern Nevada, they also serve as a reminder to set your irrigation clock to water your landscape only one day a week beginning Monday, November 1.

Compliance with the mandatory seasonal watering restrictions is in effect through February 28 and is especially important this winter in light of the federal government’s recent declaration of a water shortage on the Colorado River. As a result of the declaration, Southern Nevada’s allotment of water drawn from Lake Mead is the source of 90 percent of the community’s supply and will decrease by seven billion gallons beginning January 1.

The mandatory winter watering schedule limits both turf and drip irrigation to one assigned day per week; Sunday watering is prohibited year-round. To find the day of the week you are allowed to irrigate your landscape, visit

Watering on days other than your assigned watering day or allowing water to spray or flow off your property is considered water waste and may result in a water-waste fee. Water-waste fees start as high as $80 for the first violation and double with each subsequent violation.

To avoid wasteful runoff and help the soil absorb more water, irrigate grass no more than 12 minutes per watering day in three cycles of four minutes. Run each four-minute cycle one hour apart. Also, watering during the mid-morning hours helps avoid freezing and prevents ice from forming on lawns and sidewalks. Drip irrigation should operate once every seven to 14 days, as trees and plants need less water than grass. In addition, be sure to change your watering clock’s time to coincide with the end of Daylight-Saving Time.

For tips on maintaining a healthy landscape during the winter season, visit