How hard is the water in Woodlawn, VA?

Tap water hardness
67mg/L
3.9gpg
Moderately hardReports range 52–107

Reported by Carroll Regional Water System · July 2022

VA typical
65 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Woodlawn has about 67 mg/L of hardness, which is 3.9 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Carroll Regional Water System, dated July 2022. Reports for this system disagree, with values from 52 to 107 mg/L.

Woodlawn on the hardness scale, with nearby cities
060120180240300360+VA typical 65Aquia Harbour: 28 mg/LAquia Harbour 28Manassas: 74 mg/LManassas 74Potomac Mills: 78 mg/LPotomac Mills 78Dale City: 78 mg/LDale City 78Woodbridge: 82 mg/LWoodbridge 82Manassas Park: 82 mg/LManassas Park 82Buckhall: 82 mg/LBuckhall 82Yorkshire: 82 mg/LYorkshire 82Sudley: 82 mg/LSudley 82Long Branch: 100 mg/LLong Branch 100Woodlawn 67mg/L as calcium carbonate060120180240300360+VA 65Potomac Mills: 78 mg/LPotomac Mi. 78Dale City: 78 mg/LDale City 78Woodbridge: 82 mg/LWoodbridge 82Manassas Park: 82 mg/LManassas P. 82Buckhall: 82 mg/LBuckhall 82Long Branch: 100 mg/LLong Branch 10067 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Woodlawn sits close to the typical Virginia figure of 65 mg/L. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 28 mg/L in Aquia Harbour to 100 in Long Branch.

What 67 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Woodlawn

3 people × 75 gallons a day × 3.9 gpg = 886 grains a day. A 24,000-grain unit regenerates about every 27 days.

Size it for your household

EPA record for Woodlawn's water system

Carroll Regional Water System · PWSID VA1035088

No health-based violations since 2016

Serves about 7,500 people from surface water.

Health-based
0
Monitoring or reporting
14
Open now
0

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

Somewhat. It measures about 67 mg/L (3.9 grains per gallon), which the USGS classes as moderately hard.

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

About 3.9 gpg. One grain per gallon equals 17.1 mg/L, so 67 mg/L divided by 17.1 gives 3.9.

What size water softener do I need in Woodlawn?

For 3 people using 75 gallons each per day, 3.9 gpg works out to about 886 grains a day. A 24,000-grain softener covers that with a regeneration about every 27 days.

Has the Woodlawn water system had EPA violations?

EPA records show no health-based violations for Carroll Regional Water System since 2016. There were also 14 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 79 cities in Virginia

Hardness data: TapWaterData US Water Hardness (utility report, July 20, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.