Herriman, Utah Water Hardness & Water Softener Guide
The published hardness for Herriman is 10 to 12 grains per gallon on district water, 25 to 60 from the local city wells. Below is where that figure comes from and what it does to a house.
Where Herriman’s water comes from
Blended year-round, more district water in summer; switches to district water only from mid-October. Source: herriman.gov · live 2026
Is Herriman hard water?
At 10 to 12 grains per gallon on district water, 25 to 60 from the local city wells, Herriman sits in the very hard band — above about 10.5 grains per gallon is very hard on the USGS scale. Scale shows up first inside the water heater, then on fixtures and glass. See the hardness scale.
Worth knowing: Herriman blends its own wells with Jordan Valley district water year round, leans harder on district water in summer, and switches to district water only from mid-October. Which end of that range you get depends on the month.
The first place that shows is the water heater, then the fixtures and the glass.
What Herriman’s hardness means in practice
Sizing is arithmetic once you have a number. At 12.0 grains per gallon — the top of that range, because a softener sized for the soft months lets hardness through in the hard ones — a household using the EPA average of more than 300 gallons a day sends roughly 3,600 grains of hardness through its plumbing every day. Over a year that is about 188 pounds of scale-forming calcium and magnesium passing through the water heater and the fixtures.
Against that load a 32,000-grain softener would regenerate roughly every 8.9 days and a 48,000-grain unit about every 13.3 days. Those are first estimates off the figure Herriman publishes, not a quote: your own use, any iron in the water, and whether you want softened water at the kitchen tap all move the answer, which is why we measure at your tap before sizing anything.
What CASA recommends in Herriman
Herriman’s figure is high enough that scale is a maintenance cost rather than a nuisance, so a properly sized softener comes first. Reverse osmosis and whole-home carbon handle taste and chlorine separately.
Water hardness in nearby cities
Herriman water hardness FAQ
How hard is the water in Herriman, Utah? Herriman is published at 10 to 12 grains per gallon on district water, 25 to 60 from the local city wells. Source: herriman.gov · live 2026
Where does Herriman get its drinking water? Blended year-round, more district water in summer; switches to district water only from mid-October.
Do I need a water softener in Herriman? Measured hardness decides it, not a published average — which is why the test comes before the recommendation.
How do I find my exact hardness? Have it measured where you live — our test is free and the result is written down. Reading the scale.
Free Herriman water test
We measure your exact hardness and recommend the right system — no pressure, flat written quote.
