ZIP Codes with Most EPA Violations in Michigan

Out of 551 ZIP codes with data in Michigan, these are the highest-ranked areas for recorded epa violations. See also: National ZIP Codes with Most EPA Water Violations | All Michigan Rankings

Statistic	Value
ZIP codes ranked	551
Highest value	149
Median value	4
State	Michigan

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Recorded EPA Violations	Safety Score
1	49630	Empire	MI	149	—
2	49636	Glen Arbor	MI	149	—
3	48371	Oxford	MI	69	67/100
4	49068	Marshall	MI	60	—
5	49092	Tekonsha	MI	59	—
6	49866	Negaunee	MI	58	67/100
7	48117	Carleton	MI	57	—
8	48430	Fenton	MI	52	67/100
9	48166	Newport	MI	51	—
10	49651	Lake City	MI	51	—
11	49663	Manton	MI	51	—
12	48873	Pewamo	MI	50	—
13	49751	Johannesburg	MI	50	—
14	49756	Lewiston	MI	50	—
15	48162	Monroe	MI	48	—
16	48851	Lyons	MI	45	—
17	49030	Burr Oak	MI	45	—
18	49201	Jackson	MI	39	—
19	48451	Linden	MI	38	67/100
20	48463	Otisville	MI	37	—
21	48860	Muir	MI	37	—
22	48629	Houghton Lake	MI	35	—
23	48418	Byron	MI	33	—
24	48420	Clio	MI	33	71/100
25	48884	Sheridan	MI	33	—
26	48189	Whitmore Lake	MI	32	—
27	48198	Ypsilanti	MI	32	55/100
28	48651	Prudenville	MI	32	—
29	48458	Mount Morris	MI	30	72/100
30	48834	Fenwick	MI	30	—
31	49120	Niles	MI	30	88/100
32	48885	Sidney	MI	28	—
33	49220	Addison	MI	28	—
34	48653	Roscommon	MI	27	—
35	49203	Jackson	MI	27	—
36	49230	Brooklyn	MI	27	—
37	49253	Manitou Beach	MI	27	—
38	49254	Michigan Center	MI	27	—
39	49202	Jackson	MI	26	—
40	48838	Greenville	MI	25	—
41	49098	Watervliet	MI	25	—
42	49091	Sturgis	MI	24	—
43	48442	Holly	MI	23	70/100
44	49022	Benton Harbor	MI	23	92/100
45	49040	Colon	MI	23	—
46	49085	Saint Joseph	MI	23	92/100
47	49032	Centreville	MI	22	—
48	48114	Brighton	MI	21	—
49	48111	Belleville	MI	20	84/100
50	48127	Dearborn Heights	MI	20	81/100
51	48879	Saint Johns	MI	20	—
52	49014	Battle Creek	MI	20	—
53	49444	Muskegon	MI	20	94/100
54	48438	Goodrich	MI	19	—
55	49442	Muskegon	MI	18	92/100
56	48236	Grosse Pointe	MI	17	86/100
57	48453	Marlette	MI	17	—
58	48843	Howell	MI	17	—
59	48847	Ithaca	MI	16	—
60	49233	Cement City	MI	16	—
61	49441	Muskegon	MI	16	95/100
62	48045	Harrison Township	MI	15	94/100
63	48125	Dearborn Heights	MI	15	82/100
64	48856	Middleton	MI	15	—
65	48875	Portland	MI	15	—
66	49015	Battle Creek	MI	15	—
67	49037	Battle Creek	MI	15	—
68	49103	Berrien Springs	MI	15	93/100
69	49905	Atlantic Mine	MI	15	—
70	49916	Chassell	MI	15	—
71	49931	Houghton	MI	15	—
72	48074	Smiths Creek	MI	14	93/100
73	49111	Eau Claire	MI	14	—
74	48164	New Boston	MI	13	88/100
75	48186	Westland	MI	13	87/100
76	48348	Clarkston	MI	13	79/100
77	48894	Westphalia	MI	13	—
78	49017	Battle Creek	MI	13	—
79	49031	Cassopolis	MI	13	—
80	49047	Dowagiac	MI	13	63/100
81	49057	Hartford	MI	13	—
82	49247	Hudson	MI	13	—
83	49404	Coopersville	MI	13	95/100
84	49635	Frankfort	MI	13	—
85	48184	Wayne	MI	12	88/100
86	48416	Brown City	MI	12	—
87	48835	Fowler	MI	12	79/100
88	48845	Hubbardston	MI	12	—
89	48858	Mount Pleasant	MI	12	—
90	48883	Shepherd	MI	12	—
91	49079	Paw Paw	MI	12	—
92	49319	Cedar Springs	MI	12	71/100
93	49341	Rockford	MI	12	70/100
94	49415	Fruitport	MI	12	96/100
95	49448	Nunica	MI	12	—
96	49544	Grand Rapids	MI	12	70/100
97	49616	Benzonia	MI	12	—
98	48036	Clinton Township	MI	11	96/100
99	48043	Mount Clemens	MI	11	96/100
100	48103	Ann Arbor	MI	11	62/100

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: 2026-08-31.

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.

ZIP Codes with Most EPA Violations in Michigan — 2026

Top 100 Worst ZIP Codes

Methodology

Frequently Asked Questions

What counts as an EPA water violation?

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

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