Well water hardness in Kentucky
Across 6 counties of Kentucky, the median well sampled by the USGS has 14.5 gpg of hardness. Counties range from 13.4 gpg (Hart County) to 20.2 gpg (Todd County).
Millions of American households drink water from their own well. No utility tests that water and no water quality report covers it. These pages summarise the hardness the U.S. Geological Survey measured in wells county by county, so you know what to expect before you test your own well.
Counties, hardest first
| gpg | mg/L | wells | ||
|---|---|---|---|---|
| Todd County | 20.2 | 345 | 10 | very hard |
| Meade County | 18.3 | 313 | 38 | very hard |
| Hardin County | 14.9 | 255 | 58 | very hard |
| Logan County | 14 | 240 | 18 | very hard |
| Green County | 13.4 | 230 | 11 | very hard |
| Hart County | 13.4 | 230 | 24 | very hard |
Counties with fewer than 10 sampled wells, or a median outside 5–500 mg/L, are not shown until the figure is reviewed.
Kentucky: tap water hardness by city → · Well water hardness by state and county →