How hard is the water in Apache County, AZ?
9.4 grains per gallon
A softener is worth it here.
The median hardness measured in Apache County, AZ is 161 mg/L as calcium carbonate, which is 9.4 gpg. That is hard on the USGS scale. It comes from 219 samples at 100 sites between 1990 and 2023, 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 3.9 and 17.3 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 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. Because Apache 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 0.2 to 132.6 gpg
The softest single sample on record in Apache County was 2.7 mg/L and the hardest 2,270 mg/L, an 841-fold gap. The top quarter of sites read above 17.3 gpg and the bottom quarter below 3.9 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 9.4 gpg, rivers and lakes 4.7 gpg
219 groundwater samples from 100 wells put the median at 160.8 mg/L. 464 surface samples from 112 sites put it at 80 mg/L. In Apache County the wells come out 4.7 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 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 |
Apache County against the rest of Arizona
Among the 15 Arizona counties with data, Apache County is number 14 of 15 counting from the hardest. Across the whole country it is harder than 49% of counties.
Softest in Arizona: Navajo County at 9 gpg. Hardest: Yuma County at 28.7 gpg. Closest to Apache County: La Paz County (9.6), Navajo County (9), Cochise County (9.8).