Hard water in Jamestown, NY

Tap water hardness
144mg/L
8.4gpg
HardCounty estimate

County estimate from 194 water samples in Chautauqua County · July 2026

NY typical
31 mg/L
Softener for 3 people
24k grain
Data
County estimate

Water samples from around Jamestown put hardness at about 144 mg/L (8.4 gpg), which would be hard on the USGS scale. Treat this as a rough guide: it is the median of 194 samples taken across Chautauqua County, mostly wells and streams, not a test of Jamestown's treated tap water.

Jamestown on the hardness scale, with nearby cities
060120180240300360+NY typical 31Buffalo: 86 mg/LBuffalo 86Hamburg: 109 mg/LHamburg 109Lackawanna: 109 mg/LLackawanna 109East Aurora: 109 mg/LEast Aurora 109West Seneca: 109 mg/LWest Seneca 109Cheektowaga: 109 mg/LCheektowaga 109Depew: 109 mg/LDepew 109Lancaster: 109 mg/LLancaster 109Eggertsville: 109 mg/LEggertsville 109Williamsville: 109 mg/LWilliamsville 109Jamestown 144mg/L as calcium carbonate060120180240300360+NY 31Buffalo: 86 mg/LBuffalo 86Hamburg: 109 mg/LHamburg 109Lackawanna: 109 mg/LLackawanna 109East Aurora: 109 mg/LEast Aurora 109West Seneca: 109 mg/LWest Seneca 109Cheektowaga: 109 mg/LCheektowaga 109144 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 144 mg/L, Jamestown is 113 mg/L above the typical New York figure of 31. None of the 10 nearest cities we track has harder water. The range nearby runs from 86 mg/L in Buffalo to 109 in Hamburg.

What 144 mg/L means at home

Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.

Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.

Soap and detergent need a little more to lather, and soap scum shows up in the tub.

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

At 144 mg/L most of the trouble is scale, and only a few things deal with it.

Ion-exchange water softener

The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.

Salt-free conditioner

No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.

Reverse osmosis or carbon filter

Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.

Softener size for Jamestown

3 people × 75 gallons a day × 8.4 gpg = 1,888 grains a day. A 24,000-grain unit regenerates about every 12 days.

Size it for your household

EPA record for Jamestown's water system

We could not match Jamestown to a community water system in EPA's records. Your water bill or the yearly Consumer Confidence Report names the system and its ID.

Questions

Is Jamestown water hard?

Yes. It measures about 144 mg/L (8.4 grains per gallon), which the USGS classes as hard.

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

About 8.4 gpg. One grain per gallon equals 17.1 mg/L, so 144 mg/L divided by 17.1 gives 8.4.

What size water softener do I need in Jamestown?

For 3 people using 75 gallons each per day, 8.4 gpg works out to about 1,888 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.

Nearby cities

All 149 cities in New York

Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.