How hard is the water in Susquehanna County, PA?
5.2 grains per gallon
Optional: a softener helps, but plenty of homes skip it.
The median hardness measured in Susquehanna County, PA is 89 mg/L as calcium carbonate, which is 5.2 gpg. That is moderately hard on the USGS scale. It comes from 45 samples at 25 sites between 1998 and 2026, drawn from groundwater wells, which is what most taps and private wells in the county draw on.
How much it varies here
Half the sites came in between 4.3 and 6.7 gpg. The whole middle of that range gives the same answer, so a test of your own tap is unlikely to change it. Confidence in the county figure: high (how it is measured).
What to do next
At 5.2 gpg this is your call. Look for white film on glasses and crust on the shower head: if you see little of either, you can live without one. If you do want one, a 24,000-grain unit is enough, so ask for that size rather than a bigger one.
More on when a softener is not worth it.
From 0.1 to 73.3 gpg
The softest single sample on record in Susquehanna County was 2 mg/L and the hardest 1,255 mg/L, a 628-fold gap. The top quarter of sites read above 6.7 gpg and the bottom quarter below 4.3 gpg.
Wells 5.2 gpg, rivers and lakes 2.2 gpg
45 groundwater samples from 25 wells put the median at 88.5 mg/L. 562 surface samples from 38 sites put it at 38.2 mg/L. In Susquehanna County the wells come out 3.0 gpg harder. Groundwater sits in contact with rock for years and picks up calcium and magnesium as it goes, so wells usually read harder. A utility here that draws from the river can deliver noticeably different water from a private well next door.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 113 lb of salt a year (3 bags of 40 lb, about $20), and roughly 2,346 gallons of regeneration water. Installed, most units run $1,000 to $4,500; spread over 15 years with salt, that is about $120 a year.
Sizing at 5.2 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 312 | 24,000 | 38 lb |
| 2 | 624 | 24,000 | 76 lb |
| 4 | 1,248 | 24,000 | 152 lb |
| 6 | 1,872 | 24,000 | 228 lb |
Susquehanna County against the rest of Pennsylvania
Among the 67 Pennsylvania counties with data, Susquehanna County is number 44 of 67 counting from the hardest. Across the whole country it is harder than 31% of counties.
Softest in Pennsylvania: Cameron County at 1.4 gpg. Hardest: Clarion County at 68.2 gpg. Closest to Susquehanna County: McKean County (5.2), Mercer County (5.3), Chester County (4.9).