Greeley, CO water hardness

Tap water hardness
37mg/L
2.1gpg
Soft

Reported by Greeley City of · April 2025

CO typical
97 mg/L
EPA health violations since 2016
0
Data
Utility report

Tap water in Greeley has about 37 mg/L of hardness, which is 2.1 grains per gallon. On the USGS scale that counts as soft. The number comes from Greeley City of, dated April 2025.

Greeley on the hardness scale, with nearby cities
060120180240300360+CO typical 97Loveland: 28 mg/LLoveland 28Windsor: 31 mg/LWindsor 31Berthoud: 36 mg/LBerthoud 36Mead: 36 mg/LMead 36Timnath: 41 mg/LTimnath 41Fort Collins: 42 mg/LFort Collins 42Johnstown: 59 mg/LJohnstown 59Wellington: 218 mg/LWellington 218Evans: 415 mg/LEvans 415Firestone: 415 mg/LFirestone 415Greeley 37mg/L as calcium carbonate060120180240300360+CO 97Loveland: 28 mg/LLoveland 28Windsor: 31 mg/LWindsor 31Berthoud: 36 mg/LBerthoud 36Timnath: 41 mg/LTimnath 41Johnstown: 59 mg/LJohnstown 59Evans: 415 mg/LEvans 41537 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Greeley sits 60 mg/L below the typical Colorado figure of 97. Of the 10 nearest cities we track, 4 have softer water and 6 have harder. The range nearby runs from 28 mg/L in Loveland to 415 in Evans.

What 37 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 37 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 Greeley's water system

Greeley City of · PWSID CO0162321

No health-based violations since 2016

Serves about 132,310 people from surface water.

Health-based
0
Monitoring or reporting
6
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 Greeley water hard?

No. It measures about 37 mg/L (2.1 grains per gallon), which the USGS classes as soft.

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

About 2.1 gpg. One grain per gallon equals 17.1 mg/L, so 37 mg/L divided by 17.1 gives 2.1.

Has the Greeley water system had EPA violations?

EPA records show no health-based violations for Greeley City of since 2016. There were also 6 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 64 cities in Colorado

Hardness data: TapWaterData US Water Hardness (utility report, April 28, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.