How hard is the water in Peekskill, NY?

Tap water hardness
100mg/L
5.8gpg
Moderately hard

Reported by Cortlandt Consolidated WD · December 2024

NY typical
31 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Peekskill has about 100 mg/L of hardness, which is 5.8 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Cortlandt Consolidated WD, dated December 2024.

Peekskill on the hardness scale, with nearby cities
060120180240300360+NY typical 31Sleepy Hollow: 22 mg/LSleepy Hollow 22Briarcliff Manor: 30 mg/LBriarcliff Manor 30Pleasantville: 32 mg/LPleasantville 32Mount Kisco: 55 mg/LMount Kisco 55Mahopac: 71 mg/LMahopac 71Ossining: 103 mg/LOssining 103New City: 106 mg/LNew City 106Spring Valley: 106 mg/LSpring Valley 106Monsey: 106 mg/LMonsey 106Croton-on-Hudson: 107 mg/LCroton-on-Hudson 107Peekskill 100mg/L as calcium carbonate060120180240300360+NY 31Briarcliff Manor: 30 mg/LBriarcliff. 30Mount Kisco: 55 mg/LMount Kisco 55Mahopac: 71 mg/LMahopac 71Ossining: 103 mg/LOssining 103New City: 106 mg/LNew City 106Croton-on-Hudson: 107 mg/LCroton-on-. 107100 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Peekskill sits 69 mg/L above the typical New York figure of 31. Of the 10 nearest cities we track, 5 have softer water and 5 have harder. The range nearby runs from 22 mg/L in Sleepy Hollow to 107 in Croton-on-Hudson.

What 100 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Peekskill

3 people × 75 gallons a day × 5.8 gpg = 1,314 grains a day. A 24,000-grain unit regenerates about every 18 days.

Size it for your household

EPA record for Peekskill's water system

Peekskill City · PWSID NY5903452

No health-based violations since 2016

Serves about 24,272 people from surface water.

Health-based
0
Monitoring or reporting
23
Open now
0

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

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 Peekskill water hard?

Somewhat. It measures about 100 mg/L (5.8 grains per gallon), which the USGS classes as moderately hard.

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

About 5.8 gpg. One grain per gallon equals 17.1 mg/L, so 100 mg/L divided by 17.1 gives 5.8.

What size water softener do I need in Peekskill?

For 3 people using 75 gallons each per day, 5.8 gpg works out to about 1,314 grains a day. A 24,000-grain softener covers that with a regeneration about every 18 days.

Has the Peekskill water system had EPA violations?

EPA records show no health-based violations for Peekskill City since 2016. There were also 23 monitoring or reporting violations, 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, December 24, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.