Matthews, NC water hardness

Tap water hardness
31mg/L
1.8gpg
Soft

Reported by Charlotte Water · October 2025

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

Tap water in Matthews has about 31 mg/L of hardness, which is 1.8 grains per gallon. On the USGS scale that counts as soft. The number comes from Charlotte Water, dated October 2025.

Matthews on the hardness scale, with nearby cities
060120180240300360+NC typical 31Stallings: 30 mg/LStallings 30Indian Trail: 30 mg/LIndian Trail 30Weddington: 30 mg/LWeddington 30Wesley Chapel: 30 mg/LWesley Chapel 30Marvin: 30 mg/LMarvin 30Unionville: 30 mg/LUnionville 30Mint Hill: 31 mg/LMint Hill 31Charlotte: 31 mg/LCharlotte 31Pineville: 31 mg/LPineville 31Monroe: 32 mg/LMonroe 32Matthews 31mg/L as calcium carbonate060120180240300360+NC 31Stallings: 30 mg/LStallings 30Indian Trail: 30 mg/LIndian Tra. 30Weddington: 30 mg/LWeddington 30Wesley Chapel: 30 mg/LWesley Cha. 30Mint Hill: 31 mg/LMint Hill 31Charlotte: 31 mg/LCharlotte 3131 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Matthews sits close to the typical North Carolina figure of 31 mg/L. Of the 10 nearest cities we track, 6 have softer water and 1 has harder. The range nearby runs from 30 mg/L in Stallings to 32 in Monroe.

What 31 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 31 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 Matthews's water system

Charlotte Water · PWSID NC0160010

No health-based violations since 2016

Serves about 1,206,285 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

TapWaterData ties Matthews to this system. EPA's service-area records do not name Matthews, 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 Matthews water hard?

No. It measures about 31 mg/L (1.8 grains per gallon), which the USGS classes as soft.

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

About 1.8 gpg. One grain per gallon equals 17.1 mg/L, so 31 mg/L divided by 17.1 gives 1.8.

Has the Matthews water system had EPA violations?

EPA records show no health-based violations for Charlotte Water since 2016.

Nearby cities

All 101 cities in North Carolina

Hardness data: TapWaterData US Water Hardness (utility report, October 6, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.