Well water hardness in Alaska
Across 6 counties of Alaska, the median well sampled by the USGS has 7.3 gpg of hardness. Counties range from 3.2 gpg (Kenai Peninsula Borough) to 12.3 gpg (Fairbanks North Star Borough).
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 | ||
|---|---|---|---|---|
| Fairbanks North Star Borough | 12.3 | 210 | 240 | very hard |
| Municipality of Anchorage | 8.1 | 138 | 69 | hard |
| City and Borough of Yakutat | 7.4 | 127 | 12 | hard |
| Matanuska-Susitna Borough | 7.2 | 124 | 69 | hard |
| City and Borough of Juneau | 3.6 | 61 | 16 | moderately hard |
| Kenai Peninsula Borough | 3.2 | 54 | 91 | soft |
Counties with fewer than 10 sampled wells, or a median outside 5–500 mg/L, are not shown until the figure is reviewed.