Hard water in Orem, UT
Reported by Orem City Water System · July 2025
- UT typical
- 231 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in Orem has about 140 mg/L of hardness, which is 8.2 grains per gallon. On the USGS scale that counts as hard. The number comes from Orem City Water System, dated July 2025.
At 140 mg/L, Orem is 91 mg/L below the typical Utah figure of 231. Of the 10 nearest cities we track, 3 have softer water and 7 have harder. The range nearby runs from 94 mg/L in Draper to 256 in Provo.
What 140 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.
What to do about it
At 140 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 8.2 gpg = 1,843 grains a day. A 24,000-grain unit regenerates about every 13 days.
EPA record for Orem's water system
No health-based violations since 2016
Serves about 98,129 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 22
- Open now
- 0
EPA lists this system as serving Orem.
Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.
Questions
Is Orem water hard?
Yes. It measures about 140 mg/L (8.2 grains per gallon), which the USGS classes as hard.
What is the water hardness in Orem in grains per gallon?
About 8.2 gpg. One grain per gallon equals 17.1 mg/L, so 140 mg/L divided by 17.1 gives 8.2.
What size water softener do I need in Orem?
For 3 people using 75 gallons each per day, 8.2 gpg works out to about 1,843 grains a day. A 24,000-grain softener covers that with a regeneration about every 13 days.
Has the Orem water system had EPA violations?
EPA records show no health-based violations for Orem City Water System since 2016. There were also 22 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Lindon118 mg/LModerately hard
- Provo256 mg/LVery hard
- Pleasant Grove256 mg/LVery hard
- American Fork223 mg/LVery hard
- Springville256 mg/LVery hard
- Highland195 mg/LVery hard
- Saratoga Springs96 mg/LModerately hard
- Lehi144 mg/LHard
- Spanish Fork256 mg/LVery hard
- Draper94 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (utility report, July 10, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.