countyscore

Water Quality · Michigan

Best Water Quality Counties in Michigan 2026

Ranked by EPA drinking water health violations.

Top 10 — Water Quality in Michigan

Score reflects water quality only — not overall county quality.

1Alcona County, MI
86
2Alpena County, MI
86
3Arenac County, MI
86
4Charlevoix County, MI
86
5Cheboygan County, MI
86
6Clare County, MI
86
7Crawford County, MI
86
8Dickinson County, MI
86
9Grand Traverse County, MI
86
10Iron County, MI
86

All Michigan Counties — Water Quality Rankings

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

#CountyWater Quality ScoreOverall Score
1Alcona County, MI
86
62.1
2Alpena County, MI
86
52.2
3Arenac County, MI
86
51.9
4Charlevoix County, MI
86
55.2
5Cheboygan County, MI
86
51
6Clare County, MI
86
43.1
7Crawford County, MI
86
49.5
8Dickinson County, MI
86
58.2
9Grand Traverse County, MI
86
50.7
10Iron County, MI
86
60.4
11Kalkaska County, MI
86
46.2
12Lake County, MI
86
55.2
13Leelanau County, MI
86
60.9
14Luce County, MI
86
50
15Manistee County, MI
86
41.9
16Mason County, MI
86
52
17Missaukee County, MI
86
50.2
18Monroe County, MI
86
43.1
19Montmorency County, MI
86
52.5
20Oceana County, MI
86
46
21Ontonagon County, MI
86
63.5
22Osceola County, MI
86
51.2
23Oscoda County, MI
86
54.3
24Otsego County, MI
86
50.8
25Presque Isle County, MI
86
70.1
26Roscommon County, MI
86
47.4
27Schoolcraft County, MI
86
55.6
28Tuscola County, MI
86
46.5
29Kalamazoo County, MI
71.3
31
30Muskegon County, MI
70.1
33.8
31Wayne County, MI
69.7
25.6
32Macomb County, MI
68.6
37.3
33St. Clair County, MI
65.6
42.3
34Houghton County, MI
65.3
54.6
35Kent County, MI
64.8
36.8
36Saginaw County, MI
64.8
31.8
37Chippewa County, MI
63
52.8
38Oakland County, MI
62.6
43.7
39Ingham County, MI
61.7
37.9
40Washtenaw County, MI
61.4
38
41Huron County, MI
60.4
55.5
42Ottawa County, MI
60.1
52.1
43Bay County, MI
59.1
39.4
44Wexford County, MI
58.9
36.8
45Gogebic County, MI
56.6
55.5
46Gratiot County, MI
56.4
43.1
47Eaton County, MI
56.3
39.7
48St. Joseph County, MI
56.3
38.4
49Sanilac County, MI
55.4
51.8
50Montcalm County, MI
54.8
38
51Marquette County, MI
52.7
51
52Jackson County, MI
52.5
33.3
53Isabella County, MI
52.3
35.7
54Ionia County, MI
52.2
50.7
55Midland County, MI
51.4
52.4
56Allegan County, MI
47
40.2
57Alger County, MI
44.9
64.3
58Newaygo County, MI
42.8
50
59Antrim County, MI
40.8
54.7
60Emmet County, MI
40.3
55.3
61Iosco County, MI
39.3
50.3
62Calhoun County, MI
37.8
28.9
63Livingston County, MI
37.1
54.6
64Genesee County, MI
36.1
31.5
65Berrien County, MI
35.6
32.7
66Branch County, MI
35.5
37.2
67Hillsdale County, MI
31.5
45.3
68Mecosta County, MI
31.3
42.1
69Gladwin County, MI
30.6
49.4
70Van Buren County, MI
30.1
38.2
71Ogemaw County, MI
28.2
41.7
72Menominee County, MI
27.2
56
73Cass County, MI
26.9
41.1
74Lenawee County, MI
23.9
40.3
75Lapeer County, MI
23.5
49.3
76Delta County, MI
23.1
49.5
77Shiawassee County, MI
23
42.7
78Clinton County, MI
21.6
33.8
79Mackinac County, MI
19.6
45.9
80Benzie County, MI
14.7
52.8
81Barry County, MI
14
46.2
82Baraga County, MI
12.9
55.7
83Keweenaw County, MI
6.1
71.6

Explore More

Best overall counties in MichiganFull Water Quality data on WaterByCounty