Mount Vernon, NY water hardness

Tap water hardness
24mg/L
1.4gpg
Soft

Reported by Mount Vernon Water Department · February 2025

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

The water in Mount Vernon carries roughly 24 mg/L of dissolved calcium and magnesium, or 1.4 grains per gallon. That is soft water. The number comes from Mount Vernon Water Department, dated February 2025.

Mount Vernon on the hardness scale, with nearby cities
060120180240300360+NY typical 31New Rochelle: 6 mg/LNew Rochelle 6Larchmont: 6 mg/LLarchmont 6Mamaroneck: 6 mg/LMamaroneck 6Scarsdale: 13 mg/LScarsdale 13Tuckahoe: 14 mg/LTuckahoe 14Eastchester: 14 mg/LEastchester 14Greenville: 17 mg/LGreenville 17Pelham: 22 mg/LPelham 22Pelham Manor: 24 mg/LPelham Manor 24Yonkers: 35 mg/LYonkers 35Mount Vernon 24mg/L as calcium carbonate060120180240300360+NY 31New Rochelle: 6 mg/LNew Rochel. 6Tuckahoe: 14 mg/LTuckahoe 14Eastchester: 14 mg/LEastchester 14Pelham: 22 mg/LPelham 22Pelham Manor: 24 mg/LPelham Man. 24Yonkers: 35 mg/LYonkers 3524 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 24 mg/L, Mount Vernon is close to the typical New York figure of 31 mg/L. Of the 10 nearest cities we track, 8 have softer water and 1 has harder. The range nearby runs from 6 mg/L in New Rochelle to 35 in Yonkers.

What 24 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 24 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 Mount Vernon's water system

Mount Vernon Water Department · PWSID NY5903441

No health-based violations since 2016

Serves about 73,893 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 Mount Vernon water hard?

No. It measures about 24 mg/L (1.4 grains per gallon), which the USGS classes as soft.

What is the water hardness in Mount Vernon in grains per gallon?

About 1.4 gpg. One grain per gallon equals 17.1 mg/L, so 24 mg/L divided by 17.1 gives 1.4.

Has the Mount Vernon water system had EPA violations?

EPA records show no health-based violations for Mount Vernon Water Department since 2016.

Nearby cities

All 149 cities in New York

Hardness data: TapWaterData US Water Hardness (utility report, February 20, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.