Las Vegas, Nevada Water Outage Today

Las Vegas water system at a glance

Federal records name Las Vegas Valley Water District as the public water system for Las Vegas, with about 1,539,277 people on its mains.

Source water and treatment in Las Vegas

Las Vegas does not collect its own raw water. Las Vegas Valley Water District buys surface water from Southern Nevada Water System and distributes it through its own mains. After treatment the water is held in 55 storage tanks and reservoirs and pushed uphill by 56 pump facilities; that storage is the buffer that keeps taps running for a few hours after a pump or main fails.

The outage angle. Because the water arrives from Southern Nevada Water System, a break on that supplier's transmission main or a plant shutdown upstream can leave Las Vegas without water even when the local pipes are sound. Watch the supplier's alerts as well as Las Vegas Valley Water District.

What causes water outages and low pressure in Las Vegas

These are the causes that match the record for Las Vegas, listed roughly in order of how much they matter here.

• Summer demand. Las Vegas has about 115 days a year at or above 95°F and 86 at or above 100°F, and the hottest day in the record came on July 7, 2024. Lawn irrigation and cooling push demand to its yearly high, so pumps run hard, tanks drain faster than they refill and pressure sags on high ground in the evening.
• Flooding and heavy rain. NOAA logged 177 flood, flash flood and heavy rain reports in Clark County from 2015 through 2026. Floodwater can undercut pipe crossings, swamp pump stations and overload treatment plants, and a notice to boil water often follows when it enters the system.
• Long dry spells. The longest stretch without measurable rain since 2015 lasted 116 days, ending January 7, 2018. Dry soil shrinks and shifts around buried pipe, and breaks often cluster when the rain returns and the ground swells again.
• Freezing weather. Las Vegas sees about 15 days a year with a low at or below 32°F, and very few days at or below 20°F. The coldest morning in the 2015 through 2025 record came on January 2, 2022. Frost pushes into shallow service lines first. Mains follow when the ground heaves and thaws, which is why break counts climb a day or two after the temperature swings.
• Storm-driven power loss. Thunderstorm wind, hail and tornado reports in Clark County number 168 since 2015. Pump stations and treatment plants that depend on NV Energy run on the electric grid, so a storm that downs power lines can lower water pressure even when no pipe is damaged.
• Younger pipe, different risks. Only 12.8% of occupied homes in Las Vegas predate 1970 (US 35.5%), so more of the network is newer plastic or ductile iron. Breaks tend to come from construction damage, pressure surges and weather rather than age.

Las Vegas weather and water-main stress, 2015–2025

Main break season in Las Vegas runs from late fall into early spring, with the coldest stretch around November through January.

Because this is gridded reanalysis data, individual hot and cold days can read a few degrees off what the airport recorded. The day counts and yearly patterns are the useful part.

Boil water advisories and the federal violation record for Las Vegas

Since 2015, EPA's record for Las Vegas Valley Water District shows no health-based violations. It also lists 33 monitoring or reporting entries that are about paperwork rather than water quality, such as a missed sample or a late report.

Most recent entries, all monitoring or reporting:

• January 2017: A missed or late monitoring or reporting requirement (chemical and radiological contaminants) It is marked resolved.
• January 2017: A missed or late monitoring or reporting requirement (chemical and radiological contaminants) It is marked resolved.

When Las Vegas loses pressure after a break or a failed test, Las Vegas Valley Water District asks affected customers to boil water for drinking and cooking. The notice ends only after samples come back clean, which usually takes one to two days after service returns, and the Nevada Division of Environmental Protection, Bureau of Safe Drinking Water supervises the process.

Lead service lines and old plumbing in Las Vegas

The most recent 90th-percentile lead result filed for Las Vegas Valley Water District is 2.1 ppb (2025). The federal action level is 15 ppb, so that result is far from the limit.

12.8% of occupied homes in Las Vegas were built before 1970, and lead service lines and solder stayed legal until the federal ban in 1986. After any outage that disturbs the pipes, run the cold tap 30 seconds to 2 minutes before drinking, and ask Las Vegas Valley Water District about its lead service line inventory.

When will the water come back on in Las Vegas?

A crew that arrives at an ordinary main break in Las Vegas usually needs 4 to 8 hours to isolate the pipe, dig, repair, flush and restore pressure. Large transmission mains, deep pipes and breaks under busy streets can take a day or more. With 1,539,277 people on the system, a break on a main that feeds a whole district can leave thousands of homes dry at once, and crews may close valves several blocks away to isolate it.

For a break that affects many customers, Las Vegas Valley Water District usually posts an estimated restoration time. When you call, ask the dispatcher what the crew has told them.

How much water to keep on hand in Las Vegas

The average household in Las Vegas has about 2.7 people, so FEMA's minimum of one gallon per person per day comes to roughly 8 gallons for three days and 37 gallons for two weeks.

• Heat: 115 days a year top 95°F here, so plan for more than the one-gallon minimum, and keep extra for pets.
• Your water heater tank holds 30 to 50 gallons of clean water. Turn off the power or gas to it first, then drain from the valve at the bottom.
• Fill the bathtub and a few large pots as soon as you hear a break is likely; that water is for flushing and washing, not drinking.

Las Vegas versus neighboring water utilities

Water outage pages for nearby cities

North Las Vegas, NV · Henderson, NV · San Bernardino, CA · Fontana, CA