Hard water in South Jordan, UT
Reported by South Jordan City · February 2025
- UT typical
- 231 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in South Jordan has about 142 mg/L of hardness, which is 8.3 grains per gallon. On the USGS scale that counts as hard. The number comes from South Jordan City, dated February 2025.
At 142 mg/L, South Jordan is 89 mg/L below the typical Utah figure of 231. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 94 mg/L in Draper to 424 in Herriman.
What 142 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 142 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 × 8.3 gpg = 1,868 grains a day. A 24,000-grain unit regenerates about every 12 days.
EPA record for South Jordan's water system
No health-based violations since 2016
Serves about 89,704 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 2
- Open now
- 0
EPA lists this system as serving South Jordan.
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 South Jordan water hard?
Yes. It measures about 142 mg/L (8.3 grains per gallon), which the USGS classes as hard.
What is the water hardness in South Jordan in grains per gallon?
About 8.3 gpg. One grain per gallon equals 17.1 mg/L, so 142 mg/L divided by 17.1 gives 8.3.
What size water softener do I need in South Jordan?
For 3 people using 75 gallons each per day, 8.3 gpg works out to about 1,868 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.
Has the South Jordan water system had EPA violations?
EPA records show no health-based violations for South Jordan City since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Riverton206 mg/LVery hard
- West Jordan243 mg/LVery hard
- Herriman424 mg/LVery hard
- Midvale161 mg/LHard
- Kearns365 mg/LVery hard
- Taylorsville236 mg/LVery hard
- Sandy156 mg/LHard
- Draper94 mg/LModerately hard
- Murray216 mg/LVery hard
- West Valley City237 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, February 21, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.