How hard is the water in Draper, UT?

Tap water hardness
94mg/L
5.5gpg
Moderately hard

Reported by Waterpro Inc · 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 Draper has about 94 mg/L of hardness, which is 5.5 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Waterpro Inc, dated July 2025.

Draper on the hardness scale, with nearby cities
060120180240300360+UT typical 231South Jordan: 142 mg/LSouth Jordan 142Lehi: 144 mg/LLehi 144Sandy: 156 mg/LSandy 156Midvale: 161 mg/LMidvale 161Highland: 195 mg/LHighland 195Riverton: 206 mg/LRiverton 206Cottonwood Heights: 214 mg/LCottonwood Heights 214American Fork: 223 mg/LAmerican Fork 223West Jordan: 243 mg/LWest Jordan 243Herriman: 424 mg/LHerriman 424Draper 94mg/L as calcium carbonate060120180240300360+UT 231South Jordan: 142 mg/LSouth Jord. 142Lehi: 144 mg/LLehi 144Sandy: 156 mg/LSandy 156Highland: 195 mg/LHighland 195Riverton: 206 mg/LRiverton 206Herriman: 424 mg/LHerriman 42494 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 94 mg/L, Draper is 137 mg/L below the typical Utah figure of 231. None of the 10 nearest cities we track has softer water. The range nearby runs from 142 mg/L in South Jordan to 424 in Herriman.

What 94 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Draper

3 people × 75 gallons a day × 5.5 gpg = 1,235 grains a day. A 24,000-grain unit regenerates about every 19 days.

Size it for your household

EPA record for Draper's water system

Draper City Water System · PWSID UTAH18133

No health-based violations since 2016

Serves about 23,205 people from surface water.

Health-based
0
Monitoring or reporting
1
Open now
0

EPA lists this system as serving Draper.

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 Draper water hard?

Somewhat. It measures about 94 mg/L (5.5 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Draper in grains per gallon?

About 5.5 gpg. One grain per gallon equals 17.1 mg/L, so 94 mg/L divided by 17.1 gives 5.5.

What size water softener do I need in Draper?

For 3 people using 75 gallons each per day, 5.5 gpg works out to about 1,235 grains a day. A 24,000-grain softener covers that with a regeneration about every 19 days.

Has the Draper water system had EPA violations?

EPA records show no health-based violations for Draper City Water System since 2016. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

Nearby cities

All 55 cities in Utah

Hardness data: TapWaterData US Water Hardness (utility report, July 29, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.