Well water hardness in Alabama
Across 12 counties of Alabama, the median well sampled by the USGS has 3.4 gpg of hardness. Counties range from 0.5 gpg (Mobile County) to 10.2 gpg (Lawrence 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 | ||
|---|---|---|---|---|
| Lawrence County | 10.2 | 175 | 11 | hard |
| Fayette County | 8 | 137 | 12 | hard |
| Calhoun County | 6.8 | 117 | 18 | moderately hard |
| Houston County | 5.8 | 100 | 11 | moderately hard |
| Madison County | 4.4 | 75 | 20 | moderately hard |
| Tuscaloosa County | 3.5 | 59 | 82 | soft |
| Limestone County | 3.4 | 59 | 12 | soft |
| Elmore County | 1.3 | 22 | 13 | soft |
| Pickens County | 1.1 | 18 | 15 | soft |
| Montgomery County | 1 | 18 | 41 | soft |
| Hale County | 0.6 | 10 | 10 | soft |
| Mobile County | 0.5 | 9 | 33 | soft |
Counties with fewer than 10 sampled wells, or a median outside 5–500 mg/L, are not shown until the figure is reviewed.
Alabama: tap water hardness by city → · Well water hardness by state and county →