North Liberty, IA water hardness

Tap water hardness
49mg/L
2.9gpg
Soft

Reported by North Liberty Water Supply · October 2025

IA typical
183 mg/L
EPA health violations since 2016
0
Data
Utility report

The water in North Liberty carries roughly 49 mg/L of dissolved calcium and magnesium, or 2.9 grains per gallon. That is soft water. The number comes from North Liberty Water Supply, dated October 2025.

North Liberty on the hardness scale, with nearby cities
060120180240300360+IA typical 183Iowa City: 76 mg/LIowa City 76Oskaloosa: 110 mg/LOskaloosa 110Bettendorf: 121 mg/LBettendorf 121Hiawatha: 125 mg/LHiawatha 125Cedar Rapids: 128 mg/LCedar Rapids 128Marion: 128 mg/LMarion 128Davenport: 196 mg/LDavenport 196Muscatine: 240 mg/LMuscatine 240Waterloo: 264 mg/LWaterloo 264Cedar Falls: 264 mg/LCedar Falls 264North Liberty 49mg/L as calcium carbonate060120180240300360+IA 183Iowa City: 76 mg/LIowa City 76Hiawatha: 125 mg/LHiawatha 125Cedar Rapids: 128 mg/LCedar Rapi. 128Marion: 128 mg/LMarion 128Davenport: 196 mg/LDavenport 196Muscatine: 240 mg/LMuscatine 24049 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, North Liberty is 134 mg/L below the typical Iowa figure of 183. None of the 10 nearest cities we track has softer water. The range nearby runs from 76 mg/L in Iowa City to 264 in Waterloo.

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 North Liberty's water system

North Liberty Water Supply · PWSID IA5252072

No health-based violations since 2016

Serves about 23,276 people from groundwater.

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 North Liberty 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 North Liberty 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 North Liberty water system had EPA violations?

EPA records show no health-based violations for North Liberty Water Supply since 2016.

Nearby cities

All 25 cities in Iowa

Hardness data: TapWaterData US Water Hardness (utility report, October 20, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.