Mount Kisco, NY water hardness

Tap water hardness
55mg/L
3.2gpg
Soft

Reported by Mount Kisco Water Department · March 2024

NY typical
31 mg/L
EPA health violations since 2016
2
Data
Utility report

The water in Mount Kisco carries roughly 55 mg/L of dissolved calcium and magnesium, or 3.2 grains per gallon. That is soft water. The number comes from Mount Kisco Water Department, dated March 2024.

Mount Kisco on the hardness scale, with nearby cities
060120180240300360+NY typical 31Elmsford: 17 mg/LElmsford 17Harrison: 17 mg/LHarrison 17Tarrytown: 19 mg/LTarrytown 19Sleepy Hollow: 22 mg/LSleepy Hollow 22Briarcliff Manor: 30 mg/LBriarcliff Manor 30Pleasantville: 32 mg/LPleasantville 32Mahopac: 71 mg/LMahopac 71Peekskill: 100 mg/LPeekskill 100Ossining: 103 mg/LOssining 103Croton-on-Hudson: 107 mg/LCroton-on-Hudson 107Mount Kisco 55mg/L as calcium carbonate060120180240300360+NY 31Elmsford: 17 mg/LElmsford 17Sleepy Hollow: 22 mg/LSleepy Hol. 22Briarcliff Manor: 30 mg/LBriarcliff. 30Pleasantville: 32 mg/LPleasantvi. 32Ossining: 103 mg/LOssining 103Croton-on-Hudson: 107 mg/LCroton-on-. 10755 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Mount Kisco sits 24 mg/L above the typical New York figure of 31. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 17 mg/L in Elmsford to 107 in Croton-on-Hudson.

What 55 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 55 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 Mount Kisco's water system

Mount Kisco Water Department · PWSID NY5903437

2 health-based violations since 2016

Serves about 11,187 people from surface water.

Health-based
2
Monitoring or reporting
0
Open now
0
20162017201820192020202120222023202420252026Groundwater RuleColiform bacteria'16'18'20'22'24'26Groundwater RuleColiform bacteria
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Groundwater Ruletreatment of well water12024Resolved
Coliform bacteriabacteria12016Resolved

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 Mount Kisco water hard?

No. It measures about 55 mg/L (3.2 grains per gallon), which the USGS classes as soft.

What is the water hardness in Mount Kisco in grains per gallon?

About 3.2 gpg. One grain per gallon equals 17.1 mg/L, so 55 mg/L divided by 17.1 gives 3.2.

Has the Mount Kisco water system had EPA violations?

EPA records show 2 health-based violations for Mount Kisco Water Department since 2016, involving Groundwater Rule, Coliform bacteria.

Nearby cities

All 149 cities in New York

Hardness data: TapWaterData US Water Hardness (utility report, March 26, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.