Water quality by county
in West Virginia
EPA sampled public water systems across West Virginia for PFAS under its UCMR 5 programme. Of the 55 counties, 10 have a reading above a federal limit and 12 have not been sampled at all — which is not a clean result, only an absence of one. Each county below shows what was found, at what concentration, and at which utility.
| county | Population | Worst result | Compound |
|---|---|---|---|
| Wood County | 82,757 | 45× | PFOA · 179.5 ng/L |
| Wetzel County | 13,766 | 30× | PFOS · 121.8 ng/L |
| Jefferson County | 61,264 | 4.3× | PFOS · 17.3 ng/L |
| Hancock County | 28,054 | 3.0× | PFOA · 12.2 ng/L |
| Ritchie County | 8,170 | 2.9× | PFOA · 11.7 ng/L |
| Pleasants County | 7,358 | 2.8× | PFOA · 11 ng/L |
| Brooke County | 21,285 | 2.0× | PFOS · 8.2 ng/L |
| Jackson County | 27,718 | 1.3× | PFOA · 5.3 ng/L |
| Harrison County | 64,472 | 1.3× | PFOA · 5 ng/L |
| Wayne County | 37,589 | 1.1× | PFOA · 4.4 ng/L |
| Ohio County | 41,090 | under the limit | PFHxS · 4.7 ng/L |
| Marshall County | 29,354 | under the limit | PFHxS · 4 ng/L |
| Mason County | 24,770 | under the limit | PFHxS · 4 ng/L |
| Barbour County | 15,369 | under the limit | — |
| Berkeley County | 136,287 | under the limit | — |
| Boone County | 20,496 | not sampled | — |
| Braxton County | 12,051 | under the limit | — |
| Cabell County | 91,489 | under the limit | — |
| Calhoun County | 5,873 | not sampled | — |
| Clay County | 7,689 | not sampled | — |
| Doddridge County | 7,615 | not sampled | — |
| Fayette County | 38,600 | under the limit | — |
| Gilmer County | 7,116 | under the limit | — |
| Grant County | 10,971 | under the limit | — |
| Greenbrier County | 31,851 | under the limit | — |
| Hampshire County | 23,793 | not sampled | — |
| Hardy County | 14,335 | not sampled | — |
| Kanawha County | 173,906 | under the limit | — |
| Lewis County | 16,477 | under the limit | — |
| Lincoln County | 19,377 | under the limit | — |
| Logan County | 30,560 | under the limit | — |
| Marion County | 55,649 | under the limit | — |
| McDowell County | 17,147 | not sampled | — |
| Mercer County | 57,524 | under the limit | — |
| Mineral County | 26,778 | under the limit | — |
| Mingo County | 21,712 | under the limit | — |
| Monongalia County | 108,697 | under the limit | — |
| Monroe County | 12,462 | under the limit | — |
| Morgan County | 17,780 | under the limit | — |
| Nicholas County | 24,017 | under the limit | — |
| Pendleton County | 5,944 | not sampled | — |
| Pocahontas County | 7,653 | not sampled | — |
| Preston County | 34,055 | under the limit | — |
| Putnam County | 57,067 | under the limit | — |
| Raleigh County | 72,379 | under the limit | — |
| Randolph County | 27,190 | under the limit | — |
| Roane County | 13,540 | under the limit | — |
| Summers County | 11,544 | under the limit | — |
| Taylor County | 16,438 | under the limit | — |
| Tucker County | 6,573 | not sampled | — |
| Tyler County | 7,843 | not sampled | — |
| Upshur County | 23,650 | under the limit | — |
| Webster County | 7,947 | under the limit | — |
| Wirt County | 4,924 | not sampled | — |
| Wyoming County | 19,964 | under the limit | — |