Lawrenceville, GA water hardness

Tap water hardness
21mg/L
1.2gpg
SoftCounty estimate

County estimate from 3,979 water samples in Gwinnett County · July 2026

GA typical
28 mg/L
Data
County estimate

Water samples from around Lawrenceville put hardness at about 21 mg/L (1.2 gpg), which would be soft on the USGS scale. Treat this as a rough guide: it is the median of 3,979 samples taken across Gwinnett County, mostly wells and streams, not a test of Lawrenceville's treated tap water.

Lawrenceville on the hardness scale, with nearby cities
060120180240300360+GA typical 28Tucker: 18 mg/LTucker 18Stone Mountain: 18 mg/LStone Mountain 18Clarkston: 18 mg/LClarkston 18Redan: 18 mg/LRedan 18Scottdale: 18 mg/LScottdale 18Cumming: 20 mg/LCumming 20Hoschton: 21 mg/LHoschton 21Winder: 31 mg/LWinder 31Alpharetta: 31 mg/LAlpharetta 31Braselton: 40 mg/LBraselton 40Lawrenceville 21mg/L as calcium carbonate060120180240300360+GA 28Tucker: 18 mg/LTucker 18Stone Mountain: 18 mg/LStone Moun. 18Clarkston: 18 mg/LClarkston 18Hoschton: 21 mg/LHoschton 21Winder: 31 mg/LWinder 31Braselton: 40 mg/LBraselton 4021 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 21 mg/L, Lawrenceville is close to the typical Georgia figure of 28 mg/L. Of the 10 nearest cities we track, 6 have softer water and 3 have harder. The range nearby runs from 18 mg/L in Tucker to 40 in Braselton.

What 21 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 21 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 Lawrenceville's water system

We could not match Lawrenceville to a community water system in EPA's records. Your water bill or the yearly Consumer Confidence Report names the system and its ID.

Questions

Is Lawrenceville water hard?

No. It measures about 21 mg/L (1.2 grains per gallon), which the USGS classes as soft.

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

About 1.2 gpg. One grain per gallon equals 17.1 mg/L, so 21 mg/L divided by 17.1 gives 1.2.

Nearby cities

All 85 cities in Georgia

Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.