How hard is the water in Cross County, AR?
16.9 grains per gallon
A softener will pay its way here.
The median hardness measured in Cross County, AR is 289 mg/L as calcium carbonate, which is 16.9 gpg. That is very hard on the USGS scale. It comes from 18 samples at 9 sites between 1990 and 2026, drawn from groundwater wells, which is what most taps and private wells in the county draw on.
How much it varies here
Half the sites came in between 12.9 and 27.6 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 16.9 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 3.3 to 30.6 gpg
The softest single sample on record in Cross County was 56.2 mg/L and the hardest 523 mg/L, a 9-fold gap. The top quarter of sites read above 27.6 gpg and the bottom quarter below 12.9 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 16.9 gpg, rivers and lakes 5.6 gpg
18 groundwater samples from 9 wells put the median at 289 mg/L. 219 surface samples from 10 sites put it at 96.4 mg/L. In Cross County the wells come out 11.3 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 369 lb of salt a year (10 bags of 40 lb, about $66), 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 $166 a year.
Sizing at 16.9 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 1,014 | 24,000 | 123 lb |
| 2 | 2,028 | 24,000 | 247 lb |
| 4 | 4,056 | 32,000 | 493 lb |
| 6 | 6,084 | 48,000 | 740 lb |
Cross County against the rest of Arkansas
Among the 75 Arkansas counties with data, Cross County is number 9 of 75 counting from the hardest. Across the whole country it is harder than 75% of counties.
Softest in Arkansas: Hempstead County at 0.1 gpg. Hardest: Prairie County at 23.9 gpg. Closest to Cross County: Chicot County (17.3), Sharp County (16), St. Francis County (18.3).