How hard is the water in Huron County, OH?
18.8 grains per gallon
A softener will pay its way here.
The median hardness measured in Huron County, OH is 322 mg/L as calcium carbonate, which is 18.8 gpg. That is very hard on the USGS scale. It comes from 649 samples at 89 sites between 1995 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 16.6 and 21.4 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 18.8 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 7.7 to 64.3 gpg
The softest single sample on record in Huron County was 132.5 mg/L and the hardest 1,100 mg/L, an 8-fold gap. The top quarter of sites read above 21.4 gpg and the bottom quarter below 16.6 gpg.
Wells 19.8 gpg, rivers and lakes 18.8 gpg
6 groundwater samples from 1 wells put the median at 339 mg/L. 607 surface samples from 83 sites put it at 322 mg/L. In Huron County the wells come out 1.0 gpg harder. Groundwater sits in contact with rock for years and picks up calcium and magnesium as it goes, so wells usually read harder. The two sources are close, so the county figure should hold whichever one your tap is on.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 411 lb of salt a year (11 bags of 40 lb, about $74), 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 $174 a year.
Sizing at 18.8 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 1,128 | 24,000 | 137 lb |
| 2 | 2,256 | 24,000 | 274 lb |
| 4 | 4,512 | 32,000 | 549 lb |
| 6 | 6,768 | 48,000 | 823 lb |
Huron County against the rest of Ohio
Among the 88 Ohio counties with data, Huron County is number 41 of 88 counting from the hardest. Across the whole country it is harder than 81% of counties.
Softest in Ohio: Scioto County at 5.7 gpg. Hardest: Perry County at 113.3 gpg. Closest to Huron County: Knox County (18.8), Williams County (19), Portage County (19).