Water Hardness Atlas ZIP / postcode

Well water hardness in West Virginia

Across 26 counties of West Virginia, the median well sampled by the USGS has 5.1 gpg of hardness. Counties range from 2.7 gpg (Randolph County) to 20.4 gpg (Jefferson 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

gpgmg/Lwells
Jefferson County20.434993very hard
Brooke County17.530011very hard
Berkeley County16.127699very hard
Marshall County12.421371very hard
Mason County9.316031hard
Tyler County9.115624hard
Roane County5.910120moderately hard
Jackson County5.810025moderately hard
Putnam County5.810024moderately hard
Doddridge County5.89911moderately hard
Morgan County5.79893moderately hard
Wayne County5.59419moderately hard
Raleigh County5.39130moderately hard
Pocahontas County58624moderately hard
Kanawha County4.98471moderately hard
Upshur County4.78110moderately hard
Greenbrier County4.78053moderately hard
Tucker County4.67947moderately hard
Boone County4.27213moderately hard
Preston County3.96618moderately hard
Clay County3.35617soft
Wetzel County3.25419soft
Webster County3.15255soft
Fayette County35175soft
Nicholas County351119soft
Randolph County2.74612soft

Counties with fewer than 10 sampled wells, or a median outside 5–500 mg/L, are not shown until the figure is reviewed.

West Virginia: tap water hardness by city → · Well water hardness by state and county →