How hard is the water in Hopkins County, KY?
12 grains per gallon
A softener will pay its way here.
The median hardness measured in Hopkins County, KY is 206 mg/L as calcium carbonate, which is 12 gpg. That is very hard on the USGS scale. It comes from 115 samples at 6 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 7.8 and 16.9 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: medium (how it is measured).
What to do next
At 12 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 Hopkins 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 2.7 to 28.3 gpg
The softest single sample on record in Hopkins County was 47 mg/L and the hardest 485 mg/L, a 10-fold gap. The top quarter of sites read above 16.9 gpg and the bottom quarter below 7.8 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 28.3 gpg, rivers and lakes 9.6 gpg
15 groundwater samples from 1 wells put the median at 485 mg/L. 100 surface samples from 5 sites put it at 164.5 mg/L. In Hopkins County the wells come out 18.7 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 263 lb of salt a year (7 bags of 40 lb, about $47), 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 $147 a year.
Sizing at 12 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 720 | 24,000 | 88 lb |
| 2 | 1,440 | 24,000 | 175 lb |
| 4 | 2,880 | 24,000 | 350 lb |
| 6 | 4,320 | 32,000 | 526 lb |
Hopkins County against the rest of Kentucky
Among the 104 Kentucky counties with data, Hopkins County is number 17 of 104 counting from the hardest. Across the whole country it is harder than 59% of counties.
Softest in Kentucky: Letcher County at 0.3 gpg. Hardest: Jefferson County at 32.9 gpg. Closest to Hopkins County: Washington County (12.1), Grant County (11.9), Woodford County (11.9).