How hard is the water in Dundy County, NE?
9.1 grains per gallon
A softener is worth it here.
The median hardness measured in Dundy County, NE is 156 mg/L as calcium carbonate, which is 9.1 gpg. That is hard on the USGS scale. It comes from 74 samples at 69 sites between 1990 and 2016, 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 8.4 and 10.7 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 9.1 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 Dundy 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 6.8 to 75.4 gpg
The softest single sample on record in Dundy County was 116 mg/L and the hardest 1,290 mg/L, an 11-fold gap. The top quarter of sites read above 10.7 gpg and the bottom quarter below 8.4 gpg.
Wells 9.1 gpg, rivers and lakes 15.8 gpg
74 groundwater samples from 69 wells put the median at 156 mg/L. 142 surface samples from 2 sites put it at 270 mg/L. In Dundy County the rivers and lakes come out 6.7 gpg harder. Here the surface water reads harder than the wells, which often points to streams fed by limestone springs or irrigation return flow. A utility here that draws from the aquifer 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 199 lb of salt a year (5 bags of 40 lb, about $36), 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 $136 a year.
Sizing at 9.1 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 546 | 24,000 | 66 lb |
| 2 | 1,092 | 24,000 | 133 lb |
| 4 | 2,184 | 24,000 | 266 lb |
| 6 | 3,276 | 24,000 | 399 lb |
Dundy County against the rest of Nebraska
Among the 89 Nebraska counties with data, Dundy County is number 70 of 89 counting from the hardest. Across the whole country it is harder than 47% of counties.
Softest in Nebraska: Blaine County at 2.1 gpg. Hardest: Cedar County at 36.5 gpg. Closest to Dundy County: Banner County (9.1), Thayer County (9.2), Perkins County (8.8).