How hard is the water in Major County, OK?
106.3 grains per gallon
A softener will pay its way here.
The median hardness measured in Major County, OK is 1820 mg/L as calcium carbonate, which is 106.3 gpg. That is very hard on the USGS scale. It comes from 521 samples at 17 sites between 2000 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 41.7 and 120.9 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 106.3 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 28.0 to 137.3 gpg
The softest single sample on record in Major County was 478.8 mg/L and the hardest 2,350 mg/L, a 5-fold gap. The top quarter of sites read above 120.9 gpg and the bottom quarter below 41.7 gpg.
What a softener would cost to run
For a household of 3, the water is harder than a standard single tank handles in a week, so plan on a larger or twin-tank unit. Expect about 2,322 lb of salt a year (59 bags of 40 lb, about $418), 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 $518 a year.
Sizing at 106.3 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 6,378 | 48,000 | 776 lb |
| 2 | 12,756 | twin tank | 1,552 lb |
| 4 | 25,512 | twin tank | 3,104 lb |
| 6 | 38,268 | twin tank | 4,656 lb |
Major County against the rest of Oklahoma
Among the 77 Oklahoma counties with data, Major County is number 8 of 77 counting from the hardest. Across the whole country it is harder than 99% of counties.
Softest in Oklahoma: McCurtain County at 0.8 gpg. Hardest: Greer County at 125 gpg. Closest to Major County: Jackson County (106.8), Payne County (111), Woods County (115.7).