Carle Place, NY water hardness

Tap water hardness
51mg/L
3.0gpg
Soft

Reported by WA of Western Nassau · October 2025

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

Carle Place water measures 51 mg/L (3.0 gpg) of hardness, soft by USGS standards. The number comes from WA of Western Nassau, dated October 2025.

Carle Place on the hardness scale, with nearby cities
060120180240300360+NY typical 31New Cassel: 45 mg/LNew Cassel 45Mineola: 51 mg/LMineola 51Garden City: 51 mg/LGarden City 51Uniondale: 51 mg/LUniondale 51Garden City Park: 51 mg/LGarden City Park 51Hempstead: 53 mg/LHempstead 53Old Westbury: 54 mg/LOld Westbury 54Westbury: 55 mg/LWestbury 55Williston Park: 55 mg/LWilliston Park 55Roslyn Heights: 55 mg/LRoslyn Heights 55Carle Place 51mg/L as calcium carbonate060120180240300360+NY 31Mineola: 51 mg/LMineola 51Garden City: 51 mg/LGarden City 51Uniondale: 51 mg/LUniondale 51Westbury: 55 mg/LWestbury 55Williston Park: 55 mg/LWilliston. 55Roslyn Heights: 55 mg/LRoslyn Hei. 5551 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 51 mg/L, Carle Place is 20 mg/L above the typical New York figure of 31. Of the 10 nearest cities we track, 1 has softer water and 5 have harder. The range nearby runs from 45 mg/L in New Cassel to 55 in Westbury.

What 51 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 51 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 Carle Place's water system

Carle Place WD · PWSID NY2902818

No health-based violations since 2016

Serves about 9,005 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

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

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 Carle Place water hard?

No. It measures about 51 mg/L (3.0 grains per gallon), which the USGS classes as soft.

What is the water hardness in Carle Place in grains per gallon?

About 3.0 gpg. One grain per gallon equals 17.1 mg/L, so 51 mg/L divided by 17.1 gives 3.0.

Has the Carle Place water system had EPA violations?

EPA records show no health-based violations for Carle Place 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.