Well water hardness in Nevada
Across 15 counties of Nevada, the median well sampled by the USGS has 8.3 gpg of hardness. Counties range from 3.5 gpg (Mineral County) to 15.2 gpg (Clark 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 | ||
|---|---|---|---|---|
| Clark County | 15.2 | 260 | 121 | very hard |
| Lincoln County | 11.1 | 190 | 36 | very hard |
| White Pine County | 10.6 | 181 | 44 | very hard |
| Eureka County | 10 | 171 | 47 | hard |
| Elko County | 9.6 | 164 | 36 | hard |
| Washoe County | 9 | 154 | 190 | hard |
| Lyon County | 8.8 | 150 | 88 | hard |
| Humboldt County | 8.3 | 143 | 38 | hard |
| Nye County | 7.5 | 128 | 127 | hard |
| Carson City | 6.9 | 119 | 98 | moderately hard |
| Pershing County | 6.4 | 109 | 20 | moderately hard |
| Douglas County | 5.6 | 96 | 203 | moderately hard |
| Churchill County | 4 | 69 | 293 | moderately hard |
| Lander County | 4 | 68 | 23 | moderately hard |
| Mineral County | 3.5 | 59 | 23 | soft |
Counties with fewer than 10 sampled wells, or a median outside 5–500 mg/L, are not shown until the figure is reviewed.
Nevada: tap water hardness by city → · Well water hardness by state and county →