Calhoun, GA water hardness

Tap water hardness
59mg/L
3.5gpg
SoftCounty estimate

County estimate from 203 water samples in Gordon County · July 2026

GA typical
28 mg/L
EPA health violations since 2016
0
Data
County estimate

Water samples from around Calhoun put hardness at about 59 mg/L (3.5 gpg), which would be soft on the USGS scale. Treat this as a rough guide: it is the median of 203 samples taken across Gordon County, mostly wells and streams, not a test of Calhoun's treated tap water. One more reason for caution: EPA lists Calhoun's water system as using surface water, which is often softer than the wells behind the county figure.

Calhoun on the hardness scale, with nearby cities
060120180240300360+GA typical 28Milton: 20 mg/LMilton 20Canton: 23 mg/LCanton 23Woodstock: 26 mg/LWoodstock 26Cartersville: 31 mg/LCartersville 31Acworth: 40 mg/LAcworth 40Kennesaw: 40 mg/LKennesaw 40Marietta: 40 mg/LMarietta 40Fair Oaks: 40 mg/LFair Oaks 40Dalton: 70 mg/LDalton 70Rome: 104 mg/LRome 104Calhoun 59mg/L as calcium carbonate060120180240300360+GA 28Canton: 23 mg/LCanton 23Woodstock: 26 mg/LWoodstock 26Cartersville: 31 mg/LCartersvil. 31Acworth: 40 mg/LAcworth 40Dalton: 70 mg/LDalton 70Rome: 104 mg/LRome 10459 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 59 mg/L, Calhoun is 31 mg/L above the typical Georgia figure of 28. Of the 10 nearest cities we track, 8 have softer water and 2 have harder. The range nearby runs from 20 mg/L in Milton to 104 in Rome.

What 59 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 59 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 Calhoun's water system

Calhoun · PWSID GA1290000

No health-based violations since 2016

Serves about 53,090 people from surface water.

Health-based
0
Monitoring or reporting
1
Open now
0

EPA lists this system as serving Calhoun.

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 Calhoun water hard?

No. It measures about 59 mg/L (3.5 grains per gallon), which the USGS classes as soft.

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

About 3.5 gpg. One grain per gallon equals 17.1 mg/L, so 59 mg/L divided by 17.1 gives 3.5.

Has the Calhoun water system had EPA violations?

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

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.