2026 Rankings

ZIP Codes with Most EPA Violations in Michigan — 2026

Last updated: June 4, 2026

624 ZIP codes ranked by Violations #1: ZIP 49847 (Hermansville, MI) — 30
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 624 ZIP codes with data in Michigan, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All Michigan Rankings

Statistic Value
ZIP codes ranked 624
Highest value 30
Median value 3
State Michigan

Top 100 Worst ZIP Codes

Rank ZIP Code City State Violations Safety Score
1 49847 Hermansville MI 30 28/100
2 48750 Oscoda MI 23 87/100
3 48433 Flushing MI 19 73/100
4 48438 Goodrich MI 19 58/100
5 49047 Dowagiac MI 19 64/100
6 49945 Lake Linden MI 19 82/100
7 48451 Linden MI 18 76/100
8 48442 Holly MI 16 65/100
9 48463 Otisville MI 16 71/100
10 49022 Benton Harbor MI 16 84/100
11 49023 Benton Harbor MI 16 92/100
12 48847 Ithaca MI 14 88/100
13 48446 Lapeer MI 13 74/100
14 49820 Curtis MI 13 97/100
15 48062 Richmond MI 12 93/100
16 48125 Dearborn Heights MI 12 76/100
17 48127 Dearborn Heights MI 12 86/100
18 48624 Gladwin MI 12 64/100
19 48658 Standish MI 12 81/100
20 49001 Kalamazoo MI 12 54/100
21 49003 Kalamazoo MI 12 60/100
22 49004 Kalamazoo MI 12 64/100
23 49005 Kalamazoo MI 12 60/100
24 49006 Kalamazoo MI 12 64/100
25 49007 Kalamazoo MI 12 59/100
26 49008 Kalamazoo MI 12 64/100
27 49009 Kalamazoo MI 12 59/100
28 49019 Kalamazoo MI 12 60/100
29 49048 Kalamazoo MI 12 54/100
30 49864 Nahma MI 12 80/100
31 48809 Belding MI 11 71/100
32 48823 East Lansing MI 11 73/100
33 48824 East Lansing MI 11 78/100
34 48825 East Lansing MI 11 78/100
35 48826 East Lansing MI 11 77/100
36 49014 Battle Creek MI 11 40/100
37 49015 Battle Creek MI 11 40/100
38 49016 Battle Creek MI 11 33/100
39 49017 Battle Creek MI 11 58/100
40 49018 Battle Creek MI 11 33/100
41 49037 Battle Creek MI 11 45/100
42 49220 Addison MI 11 54/100
43 49319 Cedar Springs MI 11 81/100
44 49326 Gowen MI 11 73/100
45 48009 Birmingham MI 10 73/100
46 48012 Birmingham MI 10 77/100
47 48883 Shepherd MI 10 92/100
48 49631 Evart MI 10 89/100
49 48111 Belleville MI 9 94/100
50 48112 Belleville MI 9 98/100
51 49064 Lawrence MI 9 94/100
52 49236 Clinton MI 9 54/100
53 49645 Kaleva MI 9 90/100
54 49931 Houghton MI 9 75/100
55 49002 Portage MI 8 65/100
56 49024 Portage MI 8 65/100
57 49081 Portage MI 8 61/100
58 49082 Quincy MI 8 69/100
59 49103 Berrien Springs MI 8 93/100
60 49104 Berrien Springs MI 8 97/100
61 49325 Freeport MI 8 81/100
62 49348 Wayland MI 8 76/100
63 49509 Wyoming MI 8 73/100
64 49519 Wyoming MI 8 73/100
65 49649 Kingsley MI 8 84/100
66 49871 Palmer MI 8 79/100
67 48103 Ann Arbor MI 7 60/100
68 48104 Ann Arbor MI 7 60/100
69 48105 Ann Arbor MI 7 65/100
70 48106 Ann Arbor MI 7 61/100
71 48107 Ann Arbor MI 7 61/100
72 48108 Ann Arbor MI 7 65/100
73 48109 Ann Arbor MI 7 61/100
74 48113 Ann Arbor MI 7 61/100
75 48118 Chelsea MI 7 57/100
76 48189 Whitmore Lake MI 7 64/100
77 48383 White Lake MI 7 80/100
78 48386 White Lake MI 7 80/100
79 48616 Chesaning MI 7 94/100
80 48629 Houghton Lake MI 7 90/100
81 48843 Howell MI 7 82/100
82 48844 Howell MI 7 82/100
83 48853 Maple Rapids MI 7 82/100
84 48855 Howell MI 7 82/100
85 48863 Howell MI 7 82/100
86 48875 Portland MI 7 77/100
87 49036 Coldwater MI 7 59/100
88 49053 Galesburg MI 7 68/100
89 49058 Hastings MI 7 72/100
90 49072 Mendon MI 7 61/100
91 49079 Paw Paw MI 7 92/100
92 49120 Niles MI 7 89/100
93 49121 Niles MI 7 98/100
94 49230 Brooklyn MI 7 64/100
95 49337 Newaygo MI 7 83/100
96 49426 Hudsonville MI 7 92/100
97 49617 Beulah MI 7 88/100
98 49707 Alpena MI 7 76/100
99 49721 Cheboygan MI 7 86/100
100 48014 Capac MI 6 84/100

Methodology

Violation counts include all types recorded in the EPA SDWIS database: Maximum Contaminant Level (MCL) violations, treatment technique violations, and monitoring/reporting violations. Both resolved and unresolved violations are counted. Higher counts may reflect longer system histories or larger service areas.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

What counts as an EPA water violation?

EPA violations include exceeding Maximum Contaminant Levels (MCLs), failing to treat water properly (treatment technique violations), and not testing or reporting on schedule (monitoring violations). Health-based violations are the most serious.

Does a high violation count mean the water is unsafe now?

Not necessarily. Many violations are historical or monitoring-related. However, a pattern of repeated violations indicates systemic issues with water system management or infrastructure.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

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Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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