How hard is the water in Okfuskee County, OK?
9.4 grains per gallon
A softener is worth it here.
The median hardness measured in Okfuskee County, OK is 160 mg/L as calcium carbonate, which is 9.4 gpg. That is hard on the USGS scale. It comes from 258 samples at 6 sites between 2008 and 2025, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 8.8 and 10.1 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: medium (how it is measured).
What to do next
At 9.4 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 7.2 to 10.6 gpg
The softest single sample on record in Okfuskee County was 124 mg/L and the hardest 182 mg/L, a 1-fold gap. The top quarter of sites read above 10.1 gpg and the bottom quarter below 8.8 gpg.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 205 lb of salt a year (6 bags of 40 lb, about $37), 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 $137 a year.
Sizing at 9.4 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 564 | 24,000 | 69 lb |
| 2 | 1,128 | 24,000 | 137 lb |
| 4 | 2,256 | 24,000 | 274 lb |
| 6 | 3,384 | 24,000 | 412 lb |
Okfuskee County against the rest of Oklahoma
Among the 77 Oklahoma counties with data, Okfuskee County is number 56 of 77 counting from the hardest. Across the whole country it is harder than 48% of counties.
Softest in Oklahoma: McCurtain County at 0.8 gpg. Hardest: Greer County at 125 gpg. Closest to Okfuskee County: Delaware County (9.1), Okmulgee County (9.7), Tulsa County (8.9).