How hard is the water in Lawrence County, PA?
9.1 grains per gallon
A softener is worth it here.
The median hardness measured in Lawrence County, PA is 155 mg/L as calcium carbonate, which is 9.1 gpg. That is hard on the USGS scale. It comes from 1,467 samples at 17 sites between 1998 and 2026, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 8.1 and 9.6 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 9.1 gpg a softener is worth getting, mainly to protect the water heater and cut soap use. Get at least two quotes, ask each installer what grain capacity they are fitting, and check it against the sizing table below.
More on sizing a softener for your household.
From 5.8 to 12.7 gpg
The softest single sample on record in Lawrence County was 100 mg/L and the hardest 218 mg/L, a 2-fold gap. The top quarter of sites read above 9.6 gpg and the bottom quarter below 8.1 gpg.
Wells 12.7 gpg, rivers and lakes 9 gpg
18 groundwater samples from 1 wells put the median at 218 mg/L. 1,449 surface samples from 16 sites put it at 154.3 mg/L. In Lawrence County the wells come out 3.7 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 198 lb of salt a year (5 bags of 40 lb, about $36), 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 $136 a year.
Sizing at 9.1 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 546 | 24,000 | 66 lb |
| 2 | 1,092 | 24,000 | 133 lb |
| 4 | 2,184 | 24,000 | 266 lb |
| 6 | 3,276 | 24,000 | 399 lb |
Lawrence County against the rest of Pennsylvania
Among the 67 Pennsylvania counties with data, Lawrence County is number 27 of 67 counting from the hardest. Across the whole country it is harder than 47% of counties.
Softest in Pennsylvania: Cameron County at 1.4 gpg. Hardest: Clarion County at 68.2 gpg. Closest to Lawrence County: Dauphin County (9.1), Berks County (8.7), Beaver County (8.7).