Clark County · Las Vegas–Henderson–North Las Vegas metro

Plumbing help in Las Vegas, NV

Very Hard WaterFreeze Risk

Las Vegas water is very hard because it comes from the mineral-heavy Colorado River via Lake Mead, and scale is the city's signature plumbing problem. Most homes are fairly new, so water heaters, fixtures and slab leaks dominate local calls.

Call (833) 878-1592Plumbing help in Las Vegas and Clark County

Kitchen faucet beside a row of drinking glasses

Median home built: 1995
Built before 1980: 22%
Owner-occupied: 57%
Water hardness: Very hard; ≈ 17 grains/gal
Winter: Occasional hard freezes
Plumbing code: UPC

The plumbing calls that come up most in Las Vegas

Water Softener Installation
At about 17 grains per gallon, softening protects water heaters, fixtures and appliances.
Tankless Water Heaters
Tankless heat exchangers scale quickly in water this hard, so descaling schedules matter.
Slab Leak Repair
Most homes are on slabs, where supply line leaks stay hidden.

Las Vegas's very hard water and your plumbing

Las Vegas Valley water is about 291 ppm, or 17 grains per gallon (very hard). About 90% of the valley's water comes from the Colorado River via Lake Mead, which carries the calcium and magnesium. [1]

≈ 17 gpg

SoftModerately hardHardVery hard

Grains per gallon, from the utility's published figures. Scale per USGS hardness classes.

Hard-water upkeep:Water heater flushing Water softeners Hard water and plumbing Noisy water heater

Emergency plumbing in Las Vegas

Call (833) 878-1592

Shut off your main water supply if it's safe to do so. The emergencies below are listed most likely first for Las Vegas homes, based on local conditions.

Plumbing code and permits in Las Vegas

Las Vegas and Clark County use the 2024 Uniform Plumbing Code with Southern Nevada amendments, effective January 11, 2026. [2]

Licensing:Check a plumber's license in Nevada How to check a license

When Las Vegas gets a hard freeze

Occasional hard freezes · median home built 1995

Before winter:Winterizing checklist Outdoor faucets Find your shutoff

If a pipe freezes:Frozen pipe repair Burst pipe repair No water

Polybutylene-era homes in Las Vegas

The median home in Las Vegas was built in 1995, and 22% of homes predate 1980. Homes from that era were typically built with copper or CPVC supply, plastic drains, and in some homes gray polybutylene supply pipe.

Median home: 1995

1900195020002025

Galvanized steel supply (1900–1960)
Copper supply (1950–2000)
Polybutylene (some homes) (1978–1996)
PEX / CPVC (1995–today)

Typical supply-pipe materials by construction year. Many older homes have been partly repiped since.

Common projects in homes like these:Polybutylene and repiping Water heater replacement Water heater lifespan

Plumbing services for Las Vegas homes

Or start from:Plumbing problems Emergencies

Las Vegas plumbing questions

How hard is Las Vegas water?

Very hard: about 291 ppm, or 17 grains per gallon, according to the Las Vegas Valley Water District.

Do I need a water softener in Las Vegas?

Many homeowners use one to reduce scale in water heaters and on fixtures. Check any HOA or local rules, and size it for about 17 grains per gallon. See water softener installation.

Which plumbing code applies in Las Vegas?

The 2024 Uniform Plumbing Code with Southern Nevada amendments, effective January 11, 2026.

Sources (3)

U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
Las Vegas Valley Water District, Water quality FAQs · checked 2026-10-01
Clark County, Southern Nevada Amendments to the 2024 UPC · checked 2026-10-01