How hard is the water in Izard County, AR?
10.3 grains per gallon
A softener is worth it here.
The median hardness measured in Izard County, AR is 177 mg/L as calcium carbonate, which is 10.3 gpg. That is hard on the USGS scale. It comes from 392 samples at 21 sites between 1990 and 2026, 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 and 11.7 gpg. That spread crosses a decision line, so some homes here land on a different answer. A $10 test strip on your own tap settles it. Confidence in the county figure: high (how it is measured).
What to do next
At 10.3 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. Because Izard County straddles a decision line, check your own tap with a $10 test strip before you spend anything.
More on sizing a softener for your household.
From 2.3 to 12.9 gpg
The softest single sample on record in Izard County was 39.3 mg/L and the hardest 220 mg/L, a 6-fold gap. The top quarter of sites read above 11.7 gpg and the bottom quarter below 8 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 12.9 gpg, rivers and lakes 10 gpg
1 groundwater samples from 1 wells put the median at 220 mg/L. 389 surface samples from 19 sites put it at 170.5 mg/L. In Izard County the wells come out 2.9 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 226 lb of salt a year (6 bags of 40 lb, about $41), 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 $141 a year.
Sizing at 10.3 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 618 | 24,000 | 75 lb |
| 2 | 1,236 | 24,000 | 150 lb |
| 4 | 2,472 | 24,000 | 301 lb |
| 6 | 3,708 | 32,000 | 451 lb |
Izard County against the rest of Arkansas
Among the 75 Arkansas counties with data, Izard County is number 19 of 75 counting from the hardest. Across the whole country it is harder than 52% of counties.
Softest in Arkansas: Hempstead County at 0.1 gpg. Hardest: Prairie County at 23.9 gpg. Closest to Izard County: Searcy County (10.3), Baxter County (9.9), Pulaski County (9.5).