Lehi, Utah Water Hardness & Water Softener Guide
Lehi has very hard water at about 22 grains per gallon — here is what that means for your home and how to fix it.
Where Lehi’s water comes from
Lehi’s water comes primarily from Wells and Central Utah Project (Provo River). As that water moves through Utah’s mineral-rich geology it picks up calcium and magnesium — the minerals that make water hard and leave scale behind.
Is 22 grains per gallon hard?
Yes. Water above 7 gpg is considered hard, so Lehi at 22 gpg is very hard — among the hardest water in the country. Hard water shortens the life of water heaters and appliances, spots dishes and glass, clogs fixtures, and dries skin and hair.
What CASA recommends in Lehi
Your water is hard – a properly sized water softener is strongly recommended. For drinking and cooking, pair it with a reverse-osmosis system, and add whole-home carbon filtration to remove chlorine taste and odor at every tap.
Water hardness in nearby cities
Lehi water hardness FAQ
How hard is the water in Lehi, Utah? About 22 grains per gallon, which is very hard.
Do I need a water softener in Lehi? Your water is hard – a properly sized water softener is strongly recommended.
Where does Lehi get its drinking water? Wells and Central Utah Project (Provo River).
How do I find my exact hardness? Book a free CASA water test, or use our free water calculators and statewide hardness map.
Free Lehi water test
We measure your exact hardness and recommend the right system — no pressure, flat written quote.