Winter Watering Rules Start Nov. 1: One Assigned Day a Week, Never Sundays

by Ryan Rose

What Happened

On Oct. 29, 2026, News 3 Las Vegas reporter Matthew Seeman reported that the Southern Nevada Water Authority's winter watering restrictions would take effect that weekend. Starting Sunday, Nov. 1, residents and businesses may run sprinklers only on one assigned day each week. Sprinkler watering is never allowed on Sundays. The winter schedule runs through Feb. 28, 2027.

Your watering day is not your choice. It is assigned based on where you live. The Las Vegas Valley Water District, which serves much of the valley, uses six watering groups, labeled A through F. During winter, each group gets one day:

Group A: Monday
Group B: Tuesday
Group C: Wednesday
Group D: Thursday
Group E: Friday
Group F: Saturday

Nobody gets Sunday. The water district's website lists the street boundaries for each group, so you can look up your address there. If you live in Henderson, North Las Vegas or Boulder City, your city utility serves you, so check with that provider for your assigned day.

The rules are about sprinklers, also called spray irrigation. Drip systems for trees and shrubs follow their own guidance. News 3 reported that SNWA recommends watering plants and trees with drip only once every 7 to 14 days in winter. The Las Vegas Valley Water District says drip can run on any day of the week, but no more than one day a week in winter. Hand watering with a hose is allowed any time, according to the district.

News 3 also passed along SNWA's tips for the season:

Run grass sprinklers in the mid-morning. This helps avoid freezing and keeps ice from forming on lawns and sidewalks.
Water grass only on your assigned day.
Reset your irrigation clock for the end of Daylight Saving Time, which also happened on Sunday, Nov. 1.
Follow the seasonal schedule all year to save up to $300 a year on your water bill.

Why It Matters to Las Vegas Residents

This is one of those rules that touches almost every homeowner in the valley. If you have a lawn, a few shrubs on a timer, or trees on a drip line, the winter schedule applies to you. And it is easy to miss. Most people do not think about their irrigation box until something goes wrong.

The cost of missing it is real. The Las Vegas Valley Water District says running sprinklers on a day not assigned to your address counts as water waste. Here is how its process works, according to the district's water-waste page:

For a first violation on a property within 18 months, the district sends a letter giving you a chance to fix the problem first.
An investigator has to see the waste happening before a formal violation or fee is issued.
After a violation is confirmed, you get 7 to 14 days to fix it.
If the waste keeps happening, a fee can be added to your water bill. Fees depend on meter size and your violation history, and they double with each additional violation in an 18-month window.
A first-time fee can be refunded if you complete the district's "Curbing Water Waste" online test within 60 days of the fee notice.

Renters should pay attention too. In many single-family rentals, the tenant pays the water bill. That means a water-waste fee can land on the renter, even if the landlord set up the sprinklers. If you rent a home with a yard, ask your property manager who is responsible for the controller settings.

Then there is the savings side. Watering less in winter is not just about following a rule. Grass and plants need much less water when it is cool, so a summer or fall schedule in December is mostly wasted water and wasted money. SNWA says following the seasonal schedule can save the average customer up to $300 a year. For a lot of households, that is a utility bill or two.

There is also a safety angle that is easy to forget. Water on sidewalks during cold mornings can freeze. That is why SNWA tells homeowners to water mid-morning. If you have older neighbors or kids walking to school past your yard, a slick patch of ice is not something you want.

Special Cases: Bermuda Grass, New Plants and Testing

The Las Vegas Valley Water District lists a few special cases worth knowing about this winter:

Dormant Bermuda grass: Many lawns in the valley are Bermuda grass, which goes dormant and turns tan when it gets cold. The district says dormant Bermuda grass only needs water about once a month from November through March.
New landscaping: If you are putting in new plants or a new lawn, the district allows daily watering for up to 14 days, once a year, so new plants can take root. You need to call 702-822-8571 before you start.
Testing your system: You can run your sprinklers on any day to test or repair them, as long as you are there watching.
Hand watering: Watering with a hose by hand is allowed any time.

For general questions about your account, the Las Vegas Valley Water District's main line is 702-870-2011.

What Counts as Water Waste

Watering on the wrong day is not the only thing the water district looks for. In general, water waste means water that is used in a way that is not allowed or that leaves your property without doing any good. Common examples include:

Sprinklers running on a day that is not your assigned day, or on a Sunday
Water running off your yard into the gutter or street
Spray heads pointed at sidewalks, driveways or walls instead of plants
Broken or leaking sprinkler heads and pipes left unfixed

Most of these are easy fixes. Adjusting a spray head or swapping a broken nozzle costs very little and can stop a problem before it turns into a fee.

Background and History

Southern Nevada uses a seasonal watering schedule that changes four times a year. According to the Las Vegas Valley Water District, the seasons work like this:

Summer (May through August): Monday through Saturday
Fall (September and October): three assigned days a week
Winter (November through February): one assigned day a week
Spring (March and April): three assigned days a week

Sunday sprinkler watering is never allowed, in any season. In summer, the district also bans landscape watering between 11 a.m. and 7 p.m. from May 1 through Aug. 31. We covered the fall schedule back in September, when the valley moved from six days down to three.

The reason behind all of this is the Colorado River. Southern Nevada gets most of its water from Lake Mead, and Nevada has the smallest share of Colorado River water among the seven states that use it. Water used indoors gets treated and returned to Lake Mead. Water sprayed on a lawn mostly does not come back. That is why nearly every conservation rule in the valley focuses on outdoor watering.

The valley's turf rules are part of the same picture. A state law passed in 2021 bans the use of Colorado River water on grass that a committee has deemed "nonfunctional," like decorative grass in medians and along business frontages. That law takes full effect at the start of 2027. This week, a Clark County District Court judge heard arguments over whether to pause enforcement of that law. No ruling had been reported as of Nov. 1. We cover that hearing in a related story.

What Happens Next

The winter schedule runs through Feb. 28, 2027. On March 1, the valley moves to the spring schedule and three assigned days a week. Put that date on your calendar so you remember to switch your timer back.

Weather will matter over the next few months too. The valley got heavy rain and flooding on Oct. 30, which we covered in a related story about Henderson water rescues. After a good soaking, your landscape may not need water on your assigned day at all. Skipping a watering after rain is allowed and smart. If your controller has a rain sensor or a rain delay setting, use it.

Also watch for that ruling on the nonfunctional turf law. Whatever the judge decides, the removal deadline for decorative grass is close. If your HOA has decorative turf in common areas, expect more talk about conversions, costs and timelines heading into 2027.

A Quick Guide to Resetting Your Controller

Every sprinkler controller is a little different, but most work the same basic way. Here is a general walk-through. Check your controller's manual if a step does not match.

Set the time. After the end of Daylight Saving Time, many controllers are an hour off. Fix the clock first, or every start time will be wrong.
Pick your day. Find the setting for watering days. Turn off every day except your one assigned day. Make sure Sunday is off.
Set start times. For lawn zones, set three start times about an hour apart in the mid-morning. Each cycle should run about 4 minutes for pop-up spray heads.
Check drip zones. If drip runs on the same controller, set it to no more than one day a week. SNWA suggests every 7 to 14 days in winter.
Use seasonal adjust. Many controllers have a "seasonal adjust" or "water budget" setting that cuts run times by a percentage. That can help, but it does not change your watering days, so you still need to set those by hand.
Watch one cycle. Stand in your yard during the first run. Look for broken heads, spray hitting the sidewalk, or water running into the street.

Smart controllers that connect to Wi-Fi can make this easier because they adjust for weather. Even so, they still need to be set to your assigned day.

Ryan's Take

I look at water rules as a homeowner cost issue, because that is how they show up for my clients. A water-waste fee is annoying. Not knowing the ongoing cost of a big grass yard when you buy a home is a much bigger deal. When I walk a home with a buyer and the backyard is all turf, I treat it as a line item, not just a feature. It is a water bill, a mowing cost and a landscape that has to survive on one day a week from November through February.

For sellers, the timing is worth thinking about. A yard that looks stressed in listing photos can read as deferred maintenance, even if the house is great inside. If you plan to list this winter or spring, keep your landscape healthy within the rules, clean up dead spots, and be ready to tell buyers what your water bill runs. If you have already converted to desert landscaping, say so in your listing. Buyers in this valley pay attention to that.

What You Can Do

Find your day. Look up your watering group on your water provider's website. Do not copy your neighbor. Two homes on the same street can be in different groups.

Reset your timer. Open your irrigation controller and set sprinkler zones to run only on your one assigned day. Make sure Sunday is off. Reset the clock for the end of Daylight Saving Time. The Las Vegas Valley Water District suggests pop-up sprinklers on lawns run no more than 12 minutes total on your watering day, split into three 4-minute cycles about an hour apart, so the water soaks in instead of running off. Set start times for mid-morning.

Check your drip zones. Trees and shrubs on drip need much less water in winter. SNWA recommends once every 7 to 14 days. Many people leave drip zones on a summer setting all year, which wastes water and can hurt plants.

Fix leaks fast. Walk your yard while the system runs and look for broken heads, misaligned spray hitting the sidewalk, or pooling water. The district gives you 7 to 14 days to fix a confirmed violation, but a quick repair keeps it from ever getting that far.

Report waste if you see it. In the Las Vegas Valley Water District area, you can report water waste through the district's app, its online form, or by calling 702-822-8571. Most waste is just a broken sprinkler head the owner does not know about yet.

Have questions about how this affects your home or neighborhood? Reach out to Ryan Rose or text/call 702-747-5921 anytime.

Ryan Rose | Real Broker, LLC | 702-747-5921 | ryan@rosehomeslv.com | rosehomeslv.com