Syosset, NY water hardness

Tap water hardness
24mg/L
1.4gpg
Soft

Reported by Jericho WD · June 2025

NY typical
31 mg/L
EPA health violations since 2016
1
Data
Utility report

Syosset water measures 24 mg/L (1.4 gpg) of hardness, soft by USGS standards. The number comes from Jericho WD, dated June 2025.

Syosset on the hardness scale, with nearby cities
060120180240300360+NY typical 31Bethpage: 10 mg/LBethpage 10Levittown: 10 mg/LLevittown 10Farmingdale: 10 mg/LFarmingdale 10Hicksville: 18 mg/LHicksville 18Old Bethpage: 37 mg/LOld Bethpage 37Oyster Bay: 45 mg/LOyster Bay 45New Cassel: 45 mg/LNew Cassel 45Plainview: 54 mg/LPlainview 54Old Westbury: 54 mg/LOld Westbury 54Westbury: 55 mg/LWestbury 55Syosset 24mg/L as calcium carbonate060120180240300360+NY 31Bethpage: 10 mg/LBethpage 10Hicksville: 18 mg/LHicksville 18Old Bethpage: 37 mg/LOld Bethpa. 37Oyster Bay: 45 mg/LOyster Bay 45New Cassel: 45 mg/LNew Cassel 45Plainview: 54 mg/LPlainview 5424 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, Syosset is close to the typical New York figure of 31 mg/L. Of the 10 nearest cities we track, 4 have softer water and 6 have harder. The range nearby runs from 10 mg/L in Bethpage to 55 in Westbury.

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 Syosset's water system

Jericho WD · PWSID NY2902831

1 health-based violation since 2016

Serves about 58,000 people from groundwater.

Health-based
1
Monitoring or reporting
0
Open now
0
20162017201820192020202120222023202420252026Lead and Copper Rule'16'18'20'22'24'26Lead and Copper Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Lead and Copper Rulecorrosion control and lead sampling12023Resolved

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 Syosset 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 Syosset 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 Syosset water system had EPA violations?

EPA records show 1 health-based violation for Jericho WD since 2016, involving Lead and Copper Rule.

Nearby cities

All 149 cities in New York

Hardness data: TapWaterData US Water Hardness (utility report, June 23, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.