How hard is the water in Lawrence County, OH?
8 grains per gallon
A softener is worth it here.
The median hardness measured in Lawrence County, OH is 137 mg/L as calcium carbonate, which is 8 gpg. That is hard on the USGS scale. It comes from 511 samples at 94 sites between 1997 and 2019, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 6.6 and 10.5 gpg. That spread crosses a decision line, so some homes here land on a different answer. A $10 test strip on your own tap settles it. Confidence in the county figure: high (how it is measured).
What to do next
At 8 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. Because Lawrence County straddles a decision line, check your own tap with a $10 test strip before you spend anything.
More on sizing a softener for your household.
From 2.7 to 71.9 gpg
The softest single sample on record in Lawrence County was 47 mg/L and the hardest 1,230 mg/L, a 26-fold gap. The top quarter of sites read above 10.5 gpg and the bottom quarter below 6.6 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 11.2 gpg, rivers and lakes 7.8 gpg
6 groundwater samples from 4 wells put the median at 191.5 mg/L. 469 surface samples from 83 sites put it at 134 mg/L. In Lawrence County the wells come out 3.4 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 174 lb of salt a year (5 bags of 40 lb, about $31), 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 $131 a year.
Sizing at 8 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 480 | 24,000 | 58 lb |
| 2 | 960 | 24,000 | 117 lb |
| 4 | 1,920 | 24,000 | 234 lb |
| 6 | 2,880 | 24,000 | 350 lb |
Lawrence County against the rest of Ohio
Among the 88 Ohio counties with data, Lawrence County is number 87 of 88 counting from the hardest. Across the whole country it is harder than 43% of counties.
Softest in Ohio: Scioto County at 5.7 gpg. Hardest: Perry County at 113.3 gpg. Closest to Lawrence County: Carroll County (8.1), Meigs County (8.4), Monroe County (8.8).