Williamsport, PA water hardness

Tap water hardness
31mg/L
1.8gpg
SoftCounty estimate

County estimate from 3,978 water samples in Lycoming County · July 2026

PA typical
127 mg/L
Data
County estimate

Water samples from around Williamsport put hardness at about 31 mg/L (1.8 gpg), which would be soft on the USGS scale. Treat this as a rough guide: it is the median of 3,978 samples taken across Lycoming County, mostly wells and streams, not a test of Williamsport's treated tap water.

Williamsport on the hardness scale, with nearby cities
060120180240300360+PA typical 127Nanticoke: 29 mg/LNanticoke 29Plymouth: 29 mg/LPlymouth 29Mountain Top: 29 mg/LMountain Top 29Kingston: 29 mg/LKingston 29Milton: 49 mg/LMilton 49Lewisburg: 49 mg/LLewisburg 49Sunbury: 72 mg/LSunbury 72Hazleton: 74 mg/LHazleton 74State College: 178 mg/LState College 178Park Forest Village: 178 mg/LPark Forest Village 178Williamsport 31mg/L as calcium carbonate060120180240300360+PA 127Nanticoke: 29 mg/LNanticoke 29Milton: 49 mg/LMilton 49Lewisburg: 49 mg/LLewisburg 49Sunbury: 72 mg/LSunbury 72State College: 178 mg/LState Coll. 178Park Forest Village: 178 mg/LPark Fores. 17831 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Williamsport sits 96 mg/L below the typical Pennsylvania figure of 127. Of the 10 nearest cities we track, 4 have softer water and 6 have harder. The range nearby runs from 29 mg/L in Nanticoke to 178 in State College.

What 31 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 31 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 Williamsport's water system

We could not match Williamsport 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 Williamsport water hard?

No. It measures about 31 mg/L (1.8 grains per gallon), which the USGS classes as soft.

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

About 1.8 gpg. One grain per gallon equals 17.1 mg/L, so 31 mg/L divided by 17.1 gives 1.8.

Nearby cities

All 172 cities in Pennsylvania

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.