Riverdale, GA water hardness

Tap water hardness
27mg/L
1.6gpg
Soft

Reported by Clayton County Water Authority · May 2025

GA typical
28 mg/L
EPA health violations since 2016
0
Data
Utility report

Riverdale water measures 27 mg/L (1.6 gpg) of hardness, soft by USGS standards. The number comes from Clayton County Water Authority, dated May 2025.

Riverdale on the hardness scale, with nearby cities
060120180240300360+GA typical 28Gresham Park: 18 mg/LGresham Park 18Morrow: 27 mg/LMorrow 27Lovejoy: 27 mg/LLovejoy 27College Park: 28 mg/LCollege Park 28Hapeville: 28 mg/LHapeville 28East Point: 28 mg/LEast Point 28Union City: 28 mg/LUnion City 28South Fulton: 28 mg/LSouth Fulton 28Fayetteville: 70 mg/LFayetteville 70Tyrone: 70 mg/LTyrone 70Riverdale 27mg/L as calcium carbonate060120180240300360+GA 28Morrow: 27 mg/LMorrow 27College Park: 28 mg/LCollege Pa. 28Hapeville: 28 mg/LHapeville 28East Point: 28 mg/LEast Point 28Union City: 28 mg/LUnion City 28Fayetteville: 70 mg/LFayettevil. 7027 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 27 mg/L, Riverdale is close to the typical Georgia figure of 28 mg/L. Of the 10 nearest cities we track, 1 has softer water and 7 have harder. The range nearby runs from 18 mg/L in Gresham Park to 70 in Fayetteville.

What 27 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 27 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 Riverdale's water system

Clayton County Water Authority · PWSID GA0630000

No health-based violations since 2016

Serves about 298,374 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

TapWaterData ties Riverdale to this system. EPA's service-area records do not name Riverdale, so check the utility printed on your water bill.

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 Riverdale water hard?

No. It measures about 27 mg/L (1.6 grains per gallon), which the USGS classes as soft.

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

About 1.6 gpg. One grain per gallon equals 17.1 mg/L, so 27 mg/L divided by 17.1 gives 1.6.

Has the Riverdale water system had EPA violations?

EPA records show no health-based violations for Clayton County Water Authority since 2016.

Nearby cities

All 85 cities in Georgia

Hardness data: TapWaterData US Water Hardness (utility report, May 12, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.