West Hempstead, NY water hardness

Tap water hardness
48mg/L
2.8gpg
Soft

Reported by WA of Western Nassau · October 2025

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

The water in West Hempstead carries roughly 48 mg/L of dissolved calcium and magnesium, or 2.8 grains per gallon. That is soft water. The number comes from WA of Western Nassau, dated October 2025.

West Hempstead on the hardness scale, with nearby cities
060120180240300360+NY typical 31Lynbrook: 32 mg/LLynbrook 32Lakeview: 39 mg/LLakeview 39Rockville Centre: 39 mg/LRockville Centre 39Franklin Square: 48 mg/LFranklin Square 48Malverne: 51 mg/LMalverne 51Garden City: 51 mg/LGarden City 51Hempstead: 53 mg/LHempstead 53New Hyde Park: 53 mg/LNew Hyde Park 53Elmont: 55 mg/LElmont 55North Valley Stream: 55 mg/LNorth Valley Stream 55West Hempstead 48mg/L as calcium carbonate060120180240300360+NY 31Lakeview: 39 mg/LLakeview 39Rockville Centre: 39 mg/LRockville. 39Franklin Square: 48 mg/LFranklin S. 48Malverne: 51 mg/LMalverne 51Garden City: 51 mg/LGarden City 51Hempstead: 53 mg/LHempstead 5348 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

West Hempstead sits 17 mg/L above the typical New York figure of 31. Of the 10 nearest cities we track, 3 have softer water and 6 have harder. The range nearby runs from 32 mg/L in Lynbrook to 55 in Elmont.

What 48 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 48 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 West Hempstead's water system

West Hempstead WD · PWSID NY2902857

No health-based violations since 2016

Serves about 32,031 people from groundwater.

Health-based
0
Monitoring or reporting
1
Open now
0

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

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 West Hempstead water hard?

No. It measures about 48 mg/L (2.8 grains per gallon), which the USGS classes as soft.

What is the water hardness in West Hempstead in grains per gallon?

About 2.8 gpg. One grain per gallon equals 17.1 mg/L, so 48 mg/L divided by 17.1 gives 2.8.

Has the West Hempstead water system had EPA violations?

EPA records show no health-based violations for West Hempstead WD since 2016. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

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.