How hard is the water in Summit County, OH?
14 grains per gallon
A softener will pay its way here.
The median hardness measured in Summit County, OH is 240 mg/L as calcium carbonate, which is 14 gpg. That is very hard on the USGS scale. It comes from 1,783 samples at 184 sites between 1990 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 11.5 and 16.2 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 14 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 1.3 to 41.4 gpg
The softest single sample on record in Summit County was 23 mg/L and the hardest 708 mg/L, a 31-fold gap. The top quarter of sites read above 16.2 gpg and the bottom quarter below 11.5 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 22.3 gpg, rivers and lakes 13.9 gpg
4 groundwater samples from 3 wells put the median at 382.5 mg/L. 1,721 surface samples from 173 sites put it at 238 mg/L. In Summit County the wells come out 8.4 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 306 lb of salt a year (8 bags of 40 lb, about $55), 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 $155 a year.
Sizing at 14 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 840 | 24,000 | 102 lb |
| 2 | 1,680 | 24,000 | 204 lb |
| 4 | 3,360 | 24,000 | 409 lb |
| 6 | 5,040 | 40,000 | 613 lb |
Summit County against the rest of Ohio
Among the 88 Ohio counties with data, Summit County is number 69 of 88 counting from the hardest. Across the whole country it is harder than 66% of counties.
Softest in Ohio: Scioto County at 5.7 gpg. Hardest: Perry County at 113.3 gpg. Closest to Summit County: Guernsey County (14.2), Richland County (14.3), Hocking County (13.6).