Well water hardness in Mississippi
Across 23 counties of Mississippi, the median well sampled by the USGS has 1.5 gpg of hardness. Counties range from 0.4 gpg (Hinds County) to 21.1 gpg (Washington 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 | ||
|---|---|---|---|---|
| Washington County | 21.1 | 362 | 46 | very hard |
| Sunflower County | 17.2 | 294 | 13 | very hard |
| Sharkey County | 15.1 | 258 | 10 | very hard |
| Adams County | 14 | 240 | 35 | very hard |
| Leflore County | 12.6 | 217 | 23 | very hard |
| Bolivar County | 3.3 | 56 | 12 | soft |
| Prentiss County | 2.9 | 51 | 24 | soft |
| Clarke County | 2.7 | 47 | 10 | soft |
| Forrest County | 1.6 | 28 | 19 | soft |
| Monroe County | 1.6 | 28 | 15 | soft |
| Noxubee County | 1.5 | 26 | 12 | soft |
| Attala County | 1.5 | 26 | 11 | soft |
| Lowndes County | 1.4 | 24 | 12 | soft |
| Jasper County | 1.3 | 22 | 14 | soft |
| Yazoo County | 1.3 | 22 | 12 | soft |
| Lincoln County | 1 | 18 | 53 | soft |
| Madison County | 1 | 18 | 12 | soft |
| Tishomingo County | 0.9 | 15 | 23 | soft |
| Lamar County | 0.7 | 13 | 18 | soft |
| Pearl River County | 0.7 | 12 | 17 | soft |
| Jones County | 0.5 | 9 | 20 | soft |
| Jackson County | 0.5 | 8 | 49 | soft |
| Hinds County | 0.4 | 8 | 14 | soft |
Counties with fewer than 10 sampled wells, or a median outside 5–500 mg/L, are not shown until the figure is reviewed.