General information for homeowners, not plumbing, legal or engineering advice. See the Las Vegas Valley Water District and Southern Nevada Water Authority for official water quality information.
“Hard water” just means water with a lot of dissolved minerals, mostly calcium and magnesium. It’s safe to drink, but those minerals come out of the water as it heats up or dries, and they leave a chalky white scale behind. In Las Vegas, that scale shows up fast.
Why Las Vegas water is so hard
Most of the valley’s tap water comes from the Colorado River by way of Lake Mead. On its long trip through the desert Southwest, the river picks up minerals from the rock and soil it runs over. By the time it reaches your faucet, it is well into the range water experts call “very hard,” and that is true across the whole valley, from Summerlin to Henderson.
Some homes on the edges of the valley use private wells instead of city water. Well water can be quite different, so it’s worth testing if you’re on a well.
Signs hard water is affecting your home
- White or crusty buildup on faucets, shower heads and glass shower doors
- Spots and film on dishes and glassware, even after the dishwasher
- Soap and shampoo that don’t lather well
- Dry, itchy skin or dull hair after showering
- Water heaters that get noisy or lose efficiency as scale builds up inside
- Shorter life for dishwashers, washing machines, ice makers and coffee makers
How hardness is measured
Hardness is usually given in grains per gallon (gpg) or parts per million (ppm). One grain per gallon is about 17.1 ppm. Water above roughly 10.5 gpg (180 ppm) is generally called very hard. Your water utility publishes a yearly water quality report, and an installer can test the water at your tap during the estimate.
What a water softener does
A salt-based water softener removes calcium and magnesium from all the water coming into your home. Instead of leaving scale behind, softened water rinses clean. Most homeowners notice less buildup on fixtures, better lather and fewer spots within days. Seewater softener installation for how it works.
What a softener won’t do
A softener isn’t a filter. It doesn’t remove chlorine taste or smell, and it isn’t designed to treat every possible contaminant. If taste is a concern too, look at softener and filtration combos.
Next steps
Read about what a softener costs andsalt vs. salt-free systems, then request a free written estimate.