Greensboro, NC water hardness

Tap water hardness
36mg/L
2.1gpg
Soft

Reported by Greensboro, City of · September 2025

NC typical
31 mg/L
EPA health violations since 2016
0
Data
Utility report

The water in Greensboro carries roughly 36 mg/L of dissolved calcium and magnesium, or 2.1 grains per gallon. That is soft water. The number comes from Greensboro, City of, dated September 2025.

Greensboro on the hardness scale, with nearby cities
060120180240300360+NC typical 31Kernersville: 24 mg/LKernersville 24Trinity: 24 mg/LTrinity 24Walkertown: 24 mg/LWalkertown 24Thomasville: 24 mg/LThomasville 24Midway: 24 mg/LMidway 24Winston-Salem: 24 mg/LWinston-Salem 24High Point: 32 mg/LHigh Point 32Pleasant Garden: 36 mg/LPleasant Garden 36Burlington: 40 mg/LBurlington 40Graham: 40 mg/LGraham 40Greensboro 36mg/L as calcium carbonate060120180240300360+NC 31Kernersville: 24 mg/LKernersvil. 24Trinity: 24 mg/LTrinity 24Walkertown: 24 mg/LWalkertown 24High Point: 32 mg/LHigh Point 32Pleasant Garden: 36 mg/LPleasant G. 36Burlington: 40 mg/LBurlington 4036 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 36 mg/L, Greensboro is close to the typical North Carolina figure of 31 mg/L. Of the 10 nearest cities we track, 7 have softer water and 2 have harder. The range nearby runs from 24 mg/L in Kernersville to 40 in Burlington.

What 36 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 36 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 Greensboro's water system

Greensboro, City of · PWSID NC0241010

No health-based violations since 2016

Serves about 319,588 people from surface water.

Health-based
0
Monitoring or reporting
3
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 Greensboro water hard?

No. It measures about 36 mg/L (2.1 grains per gallon), which the USGS classes as soft.

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

About 2.1 gpg. One grain per gallon equals 17.1 mg/L, so 36 mg/L divided by 17.1 gives 2.1.

Has the Greensboro water system had EPA violations?

EPA records show no health-based violations for Greensboro, City of since 2016. There were also 3 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 101 cities in North Carolina

Hardness data: TapWaterData US Water Hardness (utility report, September 1, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.