How hard is the water in Warrenton, VA?

Tap water hardness
70mg/L
4.1gpg
Moderately hard

Reported by Warrenton, Town of · April 2023

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

Tap water in Warrenton has about 70 mg/L of hardness, which is 4.1 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Warrenton, Town of, dated April 2023.

Warrenton on the hardness scale, with nearby cities
060120180240300360+VA typical 65Manassas: 74 mg/LManassas 74Dale City: 78 mg/LDale City 78Gainesville: 82 mg/LGainesville 82Sudley: 82 mg/LSudley 82Buckhall: 82 mg/LBuckhall 82Yorkshire: 82 mg/LYorkshire 82Manassas Park: 82 mg/LManassas Park 82Culpeper: 110 mg/LCulpeper 110Front Royal: 112 mg/LFront Royal 112New Baltimore: 152 mg/LNew Baltimore 152Warrenton 70mg/L as calcium carbonate060120180240300360+VA 65Manassas: 74 mg/LManassas 74Gainesville: 82 mg/LGainesville 82Sudley: 82 mg/LSudley 82Buckhall: 82 mg/LBuckhall 82Yorkshire: 82 mg/LYorkshire 82New Baltimore: 152 mg/LNew Baltim. 15270 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Warrenton sits close to the typical Virginia figure of 65 mg/L. None of the 10 nearest cities we track has softer water. The range nearby runs from 74 mg/L in Manassas to 152 in New Baltimore.

What 70 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 Warrenton

3 people × 75 gallons a day × 4.1 gpg = 920 grains a day. A 24,000-grain unit regenerates about every 26 days.

Size it for your household

EPA record for Warrenton's water system

Warrenton, Town of · PWSID VA6061600

No health-based violations since 2016

Serves about 11,801 people from surface water.

Health-based
0
Monitoring or reporting
0
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 Warrenton water hard?

Somewhat. It measures about 70 mg/L (4.1 grains per gallon), which the USGS classes as moderately hard.

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

About 4.1 gpg. One grain per gallon equals 17.1 mg/L, so 70 mg/L divided by 17.1 gives 4.1.

What size water softener do I need in Warrenton?

For 3 people using 75 gallons each per day, 4.1 gpg works out to about 920 grains a day. A 24,000-grain softener covers that with a regeneration about every 26 days.

Has the Warrenton water system had EPA violations?

EPA records show no health-based violations for Warrenton, Town of since 2016.

Nearby cities

All 79 cities in Virginia

Hardness data: TapWaterData US Water Hardness (utility report, April 20, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.