Cheyenne, WY water hardness

Tap water hardness
49mg/L
2.9gpg
Soft

Reported by Cheyenne Board of Public Utilities · August 2025

WY typical
191 mg/L
EPA health violations since 2016
0
Data
Utility report

Cheyenne water measures 49 mg/L (2.9 gpg) of hardness, soft by USGS standards. The number comes from Cheyenne Board of Public Utilities, dated August 2025.

Cheyenne on the hardness scale, with nearby cities
060120180240300360+WY typical 191Sheridan: 27 mg/LSheridan 27Jackson: 163 mg/LJackson 163Rock Springs: 210 mg/LRock Springs 210Casper: 327 mg/LCasper 327Gillette: 926 mg/LGillette 926Cheyenne 49mg/L as calcium carbonate060120180240300360+WY 191Sheridan: 27 mg/LSheridan 27Jackson: 163 mg/LJackson 163Rock Springs: 210 mg/LRock Sprin. 210Casper: 327 mg/LCasper 327Gillette: 926 mg/LGillette 92649 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 49 mg/L, Cheyenne is 142 mg/L below the typical Wyoming figure of 191. Of the 5 nearest cities we track, 1 has softer water and 4 have harder. The range nearby runs from 27 mg/L in Sheridan to 926 in Gillette.

What 49 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 49 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Cheyenne's water system

Cheyenne Board of Public Utilities · PWSID WY5600011

No health-based violations since 2016

Serves about 64,165 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

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 Cheyenne water hard?

No. It measures about 49 mg/L (2.9 grains per gallon), which the USGS classes as soft.

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

About 2.9 gpg. One grain per gallon equals 17.1 mg/L, so 49 mg/L divided by 17.1 gives 2.9.

Has the Cheyenne water system had EPA violations?

EPA records show no health-based violations for Cheyenne Board of Public Utilities since 2016.

Nearby cities

All 6 cities in Wyoming

Hardness data: TapWaterData US Water Hardness (utility report, August 6, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.