ZIP Codes with Most EPA Violations in Utah

Out of 163 ZIP codes with data in Utah, these are the highest-ranked areas for recorded epa violations. See also: National ZIP Codes with Most EPA Water Violations | All Utah Rankings

Statistic	Value
ZIP codes ranked	163
Highest value	214
Median value	11
State	Utah

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Recorded EPA Violations	Safety Score
1	84720	Cedar City	UT	214	67/100
2	84742	Kanarraville	UT	209	—
3	84032	Heber City	UT	139	67/100
4	84049	Midway	UT	122	67/100
5	84074	Tooele	UT	110	67/100
6	84337	Tremonton	UT	104	67/100
7	84003	American Fork	UT	103	67/100
8	84312	Garland	UT	96	—
9	84721	Cedar City	UT	81	67/100
10	84622	Centerfield	UT	80	—
11	84634	Gunnison	UT	80	—
12	84029	Grantsville	UT	78	67/100
13	84335	Smithfield	UT	75	67/100
14	84630	Fayette	UT	71	—
15	84643	Mayfield	UT	71	—
16	84047	Midvale	UT	65	42/100
17	84070	Sandy	UT	64	58/100
18	84660	Spanish Fork	UT	64	67/100
19	84302	Brigham City	UT	63	67/100
20	84651	Payson	UT	58	67/100
21	84653	Salem	UT	58	67/100
22	84061	Peoa	UT	56	—
23	84107	Salt Lake City	UT	56	42/100
24	84042	Lindon	UT	55	67/100
25	84059	Orem	UT	55	67/100
26	84062	Pleasant Grove	UT	55	67/100
27	84320	Lewiston	UT	53	—
28	84501	Price	UT	52	58/100
29	84542	Wellington	UT	52	58/100
30	84043	Lehi	UT	51	67/100
31	84045	Saratoga Springs	UT	51	67/100
32	84333	Richmond	UT	51	—
33	84526	Helper	UT	50	59/100
34	84066	Roosevelt	UT	46	51/100
35	84306	Collinston	UT	46	—
36	84311	Fielding	UT	46	—
37	84314	Honeyville	UT	46	—
38	84414	Ogden	UT	44	74/100
39	84309	Deweyville	UT	43	—
40	84036	Kamas	UT	36	—
41	84317	Huntsville	UT	36	—
42	84025	Farmington	UT	34	72/100
43	84098	Park City	UT	34	—
44	84017	Coalville	UT	33	—
45	84010	Bountiful	UT	32	56/100
46	84087	Woods Cross	UT	32	56/100
47	84015	Clearfield	UT	31	78/100
48	84041	Layton	UT	31	80/100
49	84055	Oakley	UT	30	—
50	84014	Centerville	UT	29	74/100
51	84325	Mendon	UT	29	—
52	84327	Newton	UT	29	—
53	84338	Trenton	UT	29	—
54	84040	Layton	UT	28	74/100
55	84075	Syracuse	UT	28	81/100
56	84037	Kaysville	UT	27	74/100
57	84404	Ogden	UT	27	83/100
58	84305	Clarkston	UT	26	—
59	84054	North Salt Lake	UT	25	58/100
60	84310	Eden	UT	25	—
61	84315	Hooper	UT	25	83/100
62	84321	Logan	UT	25	75/100
63	84121	Salt Lake City	UT	24	50/100
64	84020	Draper	UT	22	68/100
65	84060	Park City	UT	22	—
66	84092	Sandy	UT	22	51/100
67	84093	Sandy	UT	22	51/100
68	84094	Sandy	UT	22	68/100
69	84021	Duchesne	UT	21	—
70	84648	Nephi	UT	21	—
71	84318	Hyde Park	UT	19	77/100
72	84341	Logan	UT	19	77/100
73	84304	Cache Junction	UT	16	—
74	84770	Saint George	UT	16	78/100
75	84308	Cornish	UT	13	—
76	84324	Mantua	UT	13	—
77	84340	Willard	UT	13	—
78	84031	Hanna	UT	12	—
79	84108	Salt Lake City	UT	12	56/100
80	84783	Dammeron Valley	UT	12	—
81	84005	Eagle Mountain	UT	11	78/100
82	84129	Salt Lake City	UT	11	73/100
83	84737	Hurricane	UT	11	80/100
84	84738	Ivins	UT	11	80/100
85	84765	Santa Clara	UT	11	80/100
86	84001	Altamont	UT	9	64/100
87	84002	Altonah	UT	9	64/100
88	84007	Bluebell	UT	9	64/100
89	84051	Mountain Home	UT	9	64/100
90	84052	Myton	UT	9	—
91	84053	Neola	UT	9	—
92	84065	Riverton	UT	9	68/100
93	84073	Talmage	UT	9	64/100
94	84606	Provo	UT	9	80/100
95	84096	Herriman	UT	8	72/100
96	84307	Corinne	UT	8	82/100
97	84623	Chester	UT	8	—
98	84629	Fairview	UT	8	—
99	84632	Fountain Green	UT	8	—
100	84646	Moroni	UT	8	—

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: 2026-10-15.

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 Utah — 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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