How hard is the water in Warren County, KY?
9.7 grains per gallon
A softener is worth it here.
The median hardness measured in Warren County, KY is 166 mg/L as calcium carbonate, which is 9.7 gpg. That is hard on the USGS scale. It comes from 132 samples at 5 sites between 1999 and 2007, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 8.5 and 10.1 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 9.7 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.
More on sizing a softener for your household.
From 3.7 to 12.6 gpg
The softest single sample on record in Warren County was 64 mg/L and the hardest 216 mg/L, a 3-fold gap. The top quarter of sites read above 10.1 gpg and the bottom quarter below 8.5 gpg.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 212 lb of salt a year (6 bags of 40 lb, about $38), 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 $138 a year.
Sizing at 9.7 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 582 | 24,000 | 71 lb |
| 2 | 1,164 | 24,000 | 142 lb |
| 4 | 2,328 | 24,000 | 283 lb |
| 6 | 3,492 | 32,000 | 425 lb |
Warren County against the rest of Kentucky
Among the 104 Kentucky counties with data, Warren County is number 38 of 104 counting from the hardest. Across the whole country it is harder than 50% of counties.
Softest in Kentucky: Letcher County at 0.3 gpg. Hardest: Jefferson County at 32.9 gpg. Closest to Warren County: Clinton County (9.6), Breckinridge County (9.8), Boyd County (9.5).