Scarsdale, NY water hardness

Tap water hardness
13mg/L
0.8gpg
SoftReports range 13–23

Reported by Westchester Joint Water Works · October 2025

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

Tap water in Scarsdale has about 13 mg/L of hardness, which is 0.8 grains per gallon. On the USGS scale that counts as soft. The number comes from Westchester Joint Water Works, dated October 2025. Reports for this system disagree, with values from 13 to 23 mg/L.

Scarsdale on the hardness scale, with nearby cities
060120180240300360+NY typical 31Mamaroneck: 6 mg/LMamaroneck 6Larchmont: 6 mg/LLarchmont 6New Rochelle: 6 mg/LNew Rochelle 6Irvington: 6 mg/LIrvington 6Eastchester: 14 mg/LEastchester 14Tuckahoe: 14 mg/LTuckahoe 14Greenville: 17 mg/LGreenville 17Harrison: 17 mg/LHarrison 17Elmsford: 17 mg/LElmsford 17White Plains: 21 mg/LWhite Plains 21Scarsdale 13mg/L as calcium carbonate060120180240300360+NY 31Eastchester: 14 mg/LEastchester 14Tuckahoe: 14 mg/LTuckahoe 14Greenville: 17 mg/LGreenville 17Harrison: 17 mg/LHarrison 17Elmsford: 17 mg/LElmsford 17White Plains: 21 mg/LWhite Plai. 2113 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 13 mg/L, Scarsdale is 18 mg/L below the typical New York figure of 31. Of the 10 nearest cities we track, 4 have softer water and 6 have harder. The range nearby runs from 6 mg/L in Mamaroneck to 21 in White Plains.

What 13 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 13 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 Scarsdale's water system

Scarsdale Water Department · PWSID NY5903457

No health-based violations since 2016

Serves about 21,649 people from surface water.

Health-based
0
Monitoring or reporting
1
Open now
0

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

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 Scarsdale water hard?

No. It measures about 13 mg/L (0.8 grains per gallon), which the USGS classes as soft.

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

About 0.8 gpg. One grain per gallon equals 17.1 mg/L, so 13 mg/L divided by 17.1 gives 0.8.

Has the Scarsdale water system had EPA violations?

EPA records show no health-based violations for Scarsdale Water Department 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 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.