countyscore

Best Water Quality Counties in Kansas

EPA drinking water health violations and safety grades Compare rankings across all 105 counties.

Average Water Quality Score
43/100
Top County
Anderson County
Counties Ranked
105

Top 10

#1
Anderson County
KS
86/100
#2
Atchison County
KS
86/100
#3
Cheyenne County
KS
86/100
#4
Clay County
KS
86/100
#5
Cloud County
KS
86/100
#6
Coffey County
KS
86/100
#7
Cowley County
KS
86/100
#8
Decatur County
KS
86/100
#9
Douglas County
KS
86/100
#10
Grant County
KS
86/100

All Kansas Counties Ranked

#CountyWater Quality ScoreOverall Score
1Anderson County, KS
86
54.9
2Atchison County, KS
86
48.6
3Cheyenne County, KS
86
54.9
4Clay County, KS
86
46.5
5Cloud County, KS
86
44.4
6Coffey County, KS
86
60.4
7Cowley County, KS
86
37.4
8Decatur County, KS
86
54.3
9Douglas County, KS
86
33.7
10Grant County, KS
86
55.3
11Harvey County, KS
86
40.2
12Hodgeman County, KS
86
57.3
13Jackson County, KS
86
55.1
14Kiowa County, KS
86
59
15Lane County, KS
86
58.8
16Leavenworth County, KS
86
39.9
17McPherson County, KS
86
49.6
18Meade County, KS
86
53.1
19Morris County, KS
86
51.3
20Morton County, KS
86
42
21Ness County, KS
86
60
22Rawlins County, KS
86
58
23Scott County, KS
86
52.2
24Sedgwick County, KS
86
29.9
25Seward County, KS
86
35.9
26Sheridan County, KS
86
63.8
27Sherman County, KS
86
35.4
28Stanton County, KS
86
65.9
29Stevens County, KS
86
52.6
30Thomas County, KS
86
48.5
31Trego County, KS
86
68.8
32Wallace County, KS
86
64.8
33Wichita County, KS
86
58.1
34Wyandotte County, KS
86
37.4
35Johnson County, KS
71.3
42
36Saline County, KS
67.8
38.4
37Riley County, KS
65.6
34.7
38Neosho County, KS
60.8
44.4
39Lyon County, KS
52.5
39.6
40Finney County, KS
52.1
27.2
41Nemaha County, KS
46.9
72.2
42Shawnee County, KS
42.1
30.7
43Geary County, KS
41.7
26.3
44Allen County, KS
41.4
40.8
45Ellis County, KS
40.9
43.3
46Jefferson County, KS
38.7
52
47Ottawa County, KS
37.7
57.4
48Crawford County, KS
37.5
35.5
49Kingman County, KS
35.2
48.9
50Butler County, KS
34.1
35.8
51Osage County, KS
33.8
49.7
52Pawnee County, KS
33.6
47.1
53Barber County, KS
32.7
50.1
54Barton County, KS
31.5
42.2
55Clark County, KS
30.7
49
56Pottawatomie County, KS
28.5
55.5
57Bourbon County, KS
27.3
41.9
58Phillips County, KS
27.1
58.8
59Cherokee County, KS
26.4
42.1
60Harper County, KS
25.3
46.7
61Miami County, KS
25.1
44.4
62Franklin County, KS
23.4
40.2
63Marshall County, KS
23.3
57.6
64Hamilton County, KS
23.2
51.5
65Washington County, KS
21.5
61.4
66Ford County, KS
21.4
33.1
67Russell County, KS
20.5
43.4
68Brown County, KS
20.4
50.4
69Linn County, KS
19.1
56.6
70Stafford County, KS
17.8
56.4
71Sumner County, KS
17.2
37.6
72Reno County, KS
15.8
34.7
73Ellsworth County, KS
15.6
52.5
74Montgomery County, KS
15.2
33.5
75Marion County, KS
15
48.9
76Labette County, KS
14.9
40.4
77Rice County, KS
14.4
54.7
78Comanche County, KS
14.3
58.2
79Dickinson County, KS
13.8
47.7
80Graham County, KS
13
56.1
81Wilson County, KS
9.8
50.5
82Doniphan County, KS
9.7
59.6
83Kearny County, KS
9.6
44.7
84Wabaunsee County, KS
8.9
52.3
85Smith County, KS
7.6
64.6
86Pratt County, KS
7.1
46.8
87Edwards County, KS
6.8
50.4
88Haskell County, KS
6.8
50.3
89Greenwood County, KS
6.7
49.6
90Norton County, KS
6
64.2
91Chase County, KS
5.7
59.7
92Gove County, KS
5
57.3
93Rush County, KS
4.1
42.7
94Gray County, KS
3.8
52.6
95Logan County, KS
3.6
54.8
96Republic County, KS
3.6
56.6
97Chautauqua County, KS
3.1
53.5
98Rooks County, KS
2.7
53.9
99Elk County, KS
2.4
49.7
100Woodson County, KS
2.1
60
101Greeley County, KS
1.8
53.7
102Mitchell County, KS
1.7
55.8
103Osborne County, KS
1.6
56.7
104Lincoln County, KS
1.1
60.4
105Jewell County, KS
0.6
62.6

Data Source

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