How hard is the water in Holmes County, OH?
13.2 grains per gallon
A softener will pay its way here.
The median hardness measured in Holmes County, OH is 227 mg/L as calcium carbonate, which is 13.2 gpg. That is very hard on the USGS scale. It comes from 573 samples at 80 sites between 1994 and 2024, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 11.2 and 16.4 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 13.2 gpg a softener pays its way here. Before you buy, check the quoted unit's grain capacity against the sizing table below, and ask whether it regenerates on demand, which uses less salt than a timer. Call your utility for its own report if you are on city water.
More on sizing a softener for your household.
From 1.9 to 34.1 gpg
The softest single sample on record in Holmes County was 32 mg/L and the hardest 583 mg/L, an 18-fold gap. The top quarter of sites read above 16.4 gpg and the bottom quarter below 11.2 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 18.1 gpg, rivers and lakes 13.3 gpg
15 groundwater samples from 4 wells put the median at 310.5 mg/L. 491 surface samples from 65 sites put it at 227 mg/L. In Holmes County the wells come out 4.8 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 289 lb of salt a year (8 bags of 40 lb, about $52), 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 $152 a year.
Sizing at 13.2 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 792 | 24,000 | 96 lb |
| 2 | 1,584 | 24,000 | 193 lb |
| 4 | 3,168 | 24,000 | 385 lb |
| 6 | 4,752 | 40,000 | 578 lb |
Holmes County against the rest of Ohio
Among the 88 Ohio counties with data, Holmes County is number 72 of 88 counting from the hardest. Across the whole country it is harder than 63% of counties.
Softest in Ohio: Scioto County at 5.7 gpg. Hardest: Perry County at 113.3 gpg. Closest to Holmes County: Geauga County (13.3), Lorain County (13.1), Hocking County (13.6).