Mills River, NC water hardness

Tap water hardness
8mg/L
0.5gpg
Soft

Reported by Asheville City of · October 2025

NC typical
31 mg/L
EPA health violations since 2016
1
Data
Utility report

The water in Mills River carries roughly 8 mg/L of dissolved calcium and magnesium, or 0.5 grains per gallon. That is soft water. The number comes from Asheville City of, dated October 2025.

Mills River on the hardness scale, with nearby cities
060120180240300360+NC typical 31Brevard: 4 mg/LBrevard 4Etowah: 5 mg/LEtowah 5Hendersonville: 5 mg/LHendersonville 5East Flat Rock: 5 mg/LEast Flat Rock 5Fletcher: 8 mg/LFletcher 8Asheville: 9 mg/LAsheville 9Woodfin: 9 mg/LWoodfin 9Swannanoa: 9 mg/LSwannanoa 9Black Mountain: 10 mg/LBlack Mountain 10Morganton: 19 mg/LMorganton 19Mills River 8mg/L as calcium carbonate060120180240300360+NC 31Brevard: 4 mg/LBrevard 4Etowah: 5 mg/LEtowah 5Hendersonville: 5 mg/LHendersonv. 5East Flat Rock: 5 mg/LEast Flat. 5Fletcher: 8 mg/LFletcher 8Asheville: 9 mg/LAsheville 98 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 8 mg/L, Mills River is 23 mg/L below the typical North Carolina figure of 31. Of the 10 nearest cities we track, 4 have softer water and 5 have harder. The range nearby runs from 4 mg/L in Brevard to 19 in Morganton.

What 8 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 8 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 Mills River's water system

Asheville City of · PWSID NC0111010

1 health-based violation since 2016

Serves about 157,431 people from surface water.

Health-based
1
Monitoring or reporting
3
Open now
0

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

20162017201820192020202120222023202420252026Surface Water Treatment Rule (LT2)'16'18'20'22'24'26Surface Water Treatment Rule (LT2)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Surface Water Treatment Rule (LT2)filtration and disinfection12024Resolved

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 Mills River water hard?

No. It measures about 8 mg/L (0.5 grains per gallon), which the USGS classes as soft.

What is the water hardness in Mills River in grains per gallon?

About 0.5 gpg. One grain per gallon equals 17.1 mg/L, so 8 mg/L divided by 17.1 gives 0.5.

Has the Mills River water system had EPA violations?

EPA records show 1 health-based violation for Asheville City of since 2016, involving Surface Water Treatment Rule (LT2). 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, October 14, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.