Yonkers, NY water hardness

Tap water hardness
35mg/L
2.0gpg
Soft

Reported by Yonkers City · August 2025

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

The water in Yonkers carries roughly 35 mg/L of dissolved calcium and magnesium, or 2.0 grains per gallon. That is soft water. The number comes from Yonkers City, dated August 2025.

Yonkers on the hardness scale, with nearby cities
060120180240300360+NY typical 31New Rochelle: 6 mg/LNew Rochelle 6Irvington: 6 mg/LIrvington 6Larchmont: 6 mg/LLarchmont 6Scarsdale: 13 mg/LScarsdale 13Tuckahoe: 14 mg/LTuckahoe 14Eastchester: 14 mg/LEastchester 14Greenville: 17 mg/LGreenville 17Pelham: 22 mg/LPelham 22Mount Vernon: 24 mg/LMount Vernon 24Pelham Manor: 24 mg/LPelham Manor 24Yonkers 35mg/L as calcium carbonate060120180240300360+NY 31New Rochelle: 6 mg/LNew Rochel. 6Tuckahoe: 14 mg/LTuckahoe 14Eastchester: 14 mg/LEastchester 14Greenville: 17 mg/LGreenville 17Pelham: 22 mg/LPelham 22Mount Vernon: 24 mg/LMount Vern. 2435 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Yonkers sits close to the typical New York figure of 31 mg/L. None of the 10 nearest cities we track has harder water. The range nearby runs from 6 mg/L in New Rochelle to 24 in Mount Vernon.

What 35 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 35 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 Yonkers's water system

Yonkers City · PWSID NY5903465

No health-based violations since 2016

Serves about 211,569 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

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 Yonkers water hard?

No. It measures about 35 mg/L (2.0 grains per gallon), which the USGS classes as soft.

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

About 2.0 gpg. One grain per gallon equals 17.1 mg/L, so 35 mg/L divided by 17.1 gives 2.0.

Has the Yonkers water system had EPA violations?

EPA records show no health-based violations for Yonkers City since 2016.

Nearby cities

All 149 cities in New York

Hardness data: TapWaterData US Water Hardness (utility report, August 20, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.