Southern Nevada moves to one-day-a-week winter watering

Overview

Updated 2 hours ago

Starting Sunday, lawns across Southern Nevada can be sprinkler-watered only on one assigned day each week. Sunday sprinkling is prohibited. The winter schedule runs Nov. 1 through Feb. 28.

The Southern Nevada Water Authority says outdoor water matters because it evaporates and is not recycled, unlike indoor water returned to Lake Mead. About 60 percent of the region's water is used outdoors, and following seasonal rules can save the average customer up to $300 a year.

Why it matters

If you live in Southern Nevada, your sprinkler clock must change or you risk a water-waste fee; outdoor water is the region's largest unrecycled use.

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Key Indicators

Assigned sprinkler day per week in winter

From Nov. 1 through Feb. 28, municipal customers may sprinkler irrigate only on their assigned day.

60%

Southern Nevada water used outdoors

Outdoor use evaporates and is counted against the region's Colorado River allowance.

$300

Potential annual household savings

SNWA says following seasonal watering rules can save the average customer this much.

120

Winter schedule length

One-day-a-week restrictions run Nov. 1 through Feb. 28.

Voices

Curated perspectives — historical figures and your fellow readers.

Organizations Involved

Southern Nevada Water Authority

Regional water authority

Issuing seasonal watering reminder

Regional authority that sets mandatory seasonal watering schedules for Southern Nevada municipal water customers.

Las Vegas Valley Water District

Municipal water utility

Publishes mandatory watering schedule

Municipal utility that assigns watering groups and days for Las Vegas Valley customers.

Timeline

October 2026 February 2027

3 events Latest: Yesterday

February 2027
Winter watering schedule ends
Upcoming Rule Change

The one-day schedule is set to expire, with spring restrictions beginning March 1.
February 28th, 2027
November 2026
One-day-a-week winter watering begins
Upcoming Rule Change

Sprinkler irrigation is limited to one assigned day per week, with Sunday watering prohibited.
In 2 days
October 2026
SNWA reminds customers to reset irrigation clocks
Latest Reminder

The authority says winter restrictions begin Nov. 1 and urges residents and businesses to change schedules.
Yesterday

Scenarios

Winter restrictions end and spring schedule returns

Likely Resolves by Mar 1, 2027

Discussed by: SNWA's published seasonal schedule

The agency's schedule lists March 1 through April 30 as a three-day-per-week period. Unless SNWA changes the calendar, customers return to three assigned sprinkler days.

SNWA adds new winter enforcement or fee schedule

Unlikely Resolves by Feb 28, 2027

Discussed by: No cited source predicts this

The current schedule allows water-waste fees or citations for off-schedule watering. A new policy would require an SNWA board action or official notice beyond the existing reminder.

Nevada's 2027 nonfunctional grass ban takes effect

Likely Resolves by End of 2027

Discussed by: SNWA conservation page

A state law bars Colorado River water for nonfunctional grass at commercial, multi-family, government and other covered properties beginning in 2027. Homeowners' yards, cemeteries and recreational grass at schools and parks are excluded.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

2017-2018

Cape Town Day Zero (2017-2018)

Cape Town faced a severe drought and imposed increasingly tight water restrictions. In early 2018, residents were limited to 50 liters per person per day as the city prepared for 'Day Zero,' when taps would be shut off.

Then

Residents cut use enough that Day Zero was avoided.

Now

The episode became a widely cited case of using public restrictions and messaging to avoid a water emergency.

Why this matters now

Southern Nevada's seasonal schedule relies on a similar mechanism: fixed watering days and public reminders to cut outdoor use before shortages worsen.

2014-2017