Westbury, NY water hardness

Tap water hardness
55mg/L
3.2gpg
Soft

Reported by WA of Western Nassau · October 2025

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

Westbury water measures 55 mg/L (3.2 gpg) of hardness, soft by USGS standards. The number comes from WA of Western Nassau, dated October 2025.

Westbury on the hardness scale, with nearby cities
060120180240300360+NY typical 31Hicksville: 18 mg/LHicksville 18East Meadow: 42 mg/LEast Meadow 42New Cassel: 45 mg/LNew Cassel 45Carle Place: 51 mg/LCarle Place 51Mineola: 51 mg/LMineola 51Uniondale: 51 mg/LUniondale 51Old Westbury: 54 mg/LOld Westbury 54Roslyn Heights: 55 mg/LRoslyn Heights 55Williston Park: 55 mg/LWilliston Park 55East Hills: 56 mg/LEast Hills 56Westbury 55mg/L as calcium carbonate060120180240300360+NY 31New Cassel: 45 mg/LNew Cassel 45Carle Place: 51 mg/LCarle Place 51Mineola: 51 mg/LMineola 51Uniondale: 51 mg/LUniondale 51Old Westbury: 54 mg/LOld Westbu. 54Roslyn Heights: 55 mg/LRoslyn Hei. 5555 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 55 mg/L, Westbury is 24 mg/L above the typical New York figure of 31. Of the 10 nearest cities we track, 7 have softer water and 1 has harder. The range nearby runs from 18 mg/L in Hicksville to 56 in East Hills.

What 55 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 55 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 Westbury's water system

Westbury WD · PWSID NY2902856

No health-based violations since 2016

Serves about 20,500 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

EPA lists Westbury WD as the system serving Westbury. The hardness figure above comes from a different system's report, which TapWaterData uses for Westbury.

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 Westbury water hard?

No. It measures about 55 mg/L (3.2 grains per gallon), which the USGS classes as soft.

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

About 3.2 gpg. One grain per gallon equals 17.1 mg/L, so 55 mg/L divided by 17.1 gives 3.2.

Has the Westbury water system had EPA violations?

EPA records show no health-based violations for Westbury WD since 2016.

Nearby cities

All 149 cities in New York

Hardness data: TapWaterData US Water Hardness (utility report, October 15, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.