countyscore

Water Quality · West Virginia

Best Water Quality Counties in West Virginia 2026

Ranked by EPA drinking water health violations.

Top 10 — Water Quality in West Virginia

Score reflects water quality only — not overall county quality.

1Cabell County, WV
86
2Gilmer County, WV
86
3Lewis County, WV
86
4Pendleton County, WV
86
5Pleasants County, WV
86
6Putnam County, WV
86
7Upshur County, WV
86
8Wirt County, WV
86
9Kanawha County, WV
69.3
10Taylor County, WV
60.6

All West Virginia Counties — Water Quality Rankings

54 counties ranked by water quality score. Overall Score shown for context.

#CountyWater Quality ScoreOverall Score
1Cabell County, WV
86
41.6
2Gilmer County, WV
86
73.7
3Lewis County, WV
86
62.2
4Pendleton County, WV
86
77.1
5Pleasants County, WV
86
76
6Putnam County, WV
86
65
7Upshur County, WV
86
63.7
8Wirt County, WV
86
68.2
9Kanawha County, WV
69.3
41.5
10Taylor County, WV
60.6
67.8
11Berkeley County, WV
59.9
54.7
12Monongalia County, WV
57.5
51.4
13Braxton County, WV
55
68.6
14Mason County, WV
53.1
68
15Wood County, WV
52.4
46.5
16Monroe County, WV
50.7
73
17Marshall County, WV
46.9
56.8
18Summers County, WV
40.3
60.9
19Jackson County, WV
37.1
61.8
20Marion County, WV
35
54.4
21Brooke County, WV
34.4
70.7
22Hancock County, WV
33.7
67
23Grant County, WV
33.6
70.2
24Nicholas County, WV
28.7
63.7
25Clay County, WV
28
69.9
26Fayette County, WV
27
50.7
27Barbour County, WV
25.7
62.8
28Wayne County, WV
25.5
55.5
29Hampshire County, WV
25
64
30Ohio County, WV
24.9
66.6
31Jefferson County, WV
22.4
55.9
32Preston County, WV
22.1
63.8
33Logan County, WV
21.9
58.4
34Raleigh County, WV
21.8
42
35Roane County, WV
21
67.5
36Harrison County, WV
19
56.3
37Lincoln County, WV
16.1
61.9
38Mineral County, WV
15.6
63.5
39Mercer County, WV
14.9
55.9
40Doddridge County, WV
14.6
70.6
41Morgan County, WV
14.5
57
42Randolph County, WV
13.5
62.7
43Wetzel County, WV
12.1
66.6
44Greenbrier County, WV
11.7
59
45Ritchie County, WV
8.8
59.8
46Webster County, WV
7.9
69.7
47Tyler County, WV
7.8
69.8
48Pocahontas County, WV
7.7
58.1
49Mingo County, WV
7
63.6
50Wyoming County, WV
6.2
61.5
51McDowell County, WV
6.1
57
52Calhoun County, WV
5.7
67.9
53Tucker County, WV
4.8
70.7
54Hardy County, WV
3.4
56.3

Explore More

Best overall counties in West VirginiaFull Water Quality data on WaterByCounty