countyscore

Best Water Quality Counties in West Virginia

EPA drinking water health violations and safety grades Compare rankings across all 55 counties.

Average Water Quality Score
35/100
Top County
Cabell County
Counties Ranked
54

Top 10

#1
Cabell County
WV
86/100
#2
Gilmer County
WV
86/100
#3
Lewis County
WV
86/100
#4
Pendleton County
WV
86/100
#5
Pleasants County
WV
86/100
#6
Putnam County
WV
86/100
#7
Upshur County
WV
86/100
#8
Wirt County
WV
86/100
#9
Kanawha County
WV
69/100
#10
Taylor County
WV
61/100

All West Virginia Counties Ranked

#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
63.8
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
64.1
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
42.1
35Roane County, WV
21
67.5
36Harrison County, WV
19
56.3
37Lincoln County, WV
16.1
61.9
38Mineral County, WV
15.6
63.6
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
62.8
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

Data Source

Water Quality data from WaterByCounty. See full details at WaterByCounty. Data updated February 2026.