How hard is the water in Wyandotte County, KS?
12.7 grains per gallon
A softener will pay its way here.
The median hardness measured in Wyandotte County, KS is 218 mg/L as calcium carbonate, which is 12.7 gpg. That is very hard on the USGS scale. It comes from 326 samples at 10 sites between 1990 and 2018, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 9.6 and 16.2 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 12.7 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. Because Wyandotte 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 6.4 to 26.5 gpg
The softest single sample on record in Wyandotte County was 110 mg/L and the hardest 453 mg/L, a 4-fold gap. The top quarter of sites read above 16.2 gpg and the bottom quarter below 9.6 gpg.
Wells 26.5 gpg, rivers and lakes 12.7 gpg
1 groundwater samples from 1 wells put the median at 453 mg/L. 321 surface samples from 8 sites put it at 217.5 mg/L. In Wyandotte County the wells come out 13.8 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 277 lb of salt a year (7 bags of 40 lb, about $50), 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 $150 a year.
Sizing at 12.7 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 762 | 24,000 | 93 lb |
| 2 | 1,524 | 24,000 | 185 lb |
| 4 | 3,048 | 24,000 | 371 lb |
| 6 | 4,572 | 40,000 | 556 lb |
Wyandotte County against the rest of Kansas
Among the 105 Kansas counties with data, Wyandotte County is number 73 of 105 counting from the hardest. Across the whole country it is harder than 61% of counties.
Softest in Kansas: Woodson County at 6.3 gpg. Hardest: Linn County at 114.5 gpg. Closest to Wyandotte County: Seward County (12.6), Morris County (12.9), Shawnee County (12.9).