How hard is the water in South Burlington, VT?

Tap water hardness
67mg/L
3.9gpg
Moderately hard

Reported by South Burlington City Water System · August 2024

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

Tap water in South Burlington 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 South Burlington City Water System, dated August 2024.

South Burlington on the hardness scale, with nearby cities
060120180240300360+VT typical 62Barre: 60 mg/LBarre 60Winooski: 62 mg/LWinooski 62Burlington: 62 mg/LBurlington 62Montpelier: 101 mg/LMontpelier 101South Burlington 67mg/L as calcium carbonate060120180240300360+VT 62Barre: 60 mg/LBarre 60Winooski: 62 mg/LWinooski 62Burlington: 62 mg/LBurlington 62Montpelier: 101 mg/LMontpelier 10167 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 67 mg/L, South Burlington is close to the typical Vermont figure of 62 mg/L. Of the 4 nearest cities we track, 3 have softer water and 1 has harder. The range nearby runs from 60 mg/L in Barre to 101 in Montpelier.

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 South Burlington

3 people × 75 gallons a day × 3.9 gpg = 880 grains a day. A 24,000-grain unit regenerates about every 27 days.

Size it for your household

EPA record for South Burlington's water system

South Burlington City Water System · PWSID VT0005091

No health-based violations since 2016

Serves about 19,500 people from surface water.

Health-based
0
Monitoring or reporting
3
Open now
1

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 South Burlington 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 South Burlington 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 South Burlington?

For 3 people using 75 gallons each per day, 3.9 gpg works out to about 880 grains a day. A 24,000-grain softener covers that with a regeneration about every 27 days.

Has the South Burlington water system had EPA violations?

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

Nearby cities

All 5 cities in Vermont

Hardness data: TapWaterData US Water Hardness (utility report, August 2, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.