Clasificaciones 2026

Códigos ZIP con más infracciones de la EPA en Wyoming — 2026

Última actualización: 4 de junio de 2026

113 códigos postales clasificados por Violations N.º 1: código postal 83113 (Big Piney, WY) — 79

Out of 113 ZIP codes with data in Wyoming, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All Wyoming Rankings

Statistic Value
ZIP codes ranked 113
Highest value 79
Median value 5
State Wyoming

Top 100 Worst ZIP Codes

Rank ZIP Code City State Violations Safety Score
1 83113 Big Piney WY 79 61/100
2 83101 Kemmerer WY 34 36/100
3 83122 Grover WY 27 60/100
4 82501 Riverton WY 26 54/100
5 82050 Albin WY 22 49/100
6 82222 Lance Creek WY 18 13/100
7 83127 Thayne WY 18 67/100
8 82321 Baggs WY 17 30/100
9 82945 Superior WY 17 56/100
10 82323 Dixon WY 16 50/100
11 82523 Pavillion WY 16 54/100
12 82082 Pine Bluffs WY 13 61/100
13 82901 Rock Springs WY 12 64/100
14 82902 Rock Springs WY 12 65/100
15 83119 Fairview WY 12 56/100
16 82301 Rawlins WY 11 62/100
17 82932 Farson WY 10 65/100
18 82310 Jeffrey City WY 9 65/100
19 82331 Saratoga WY 8 65/100
20 82701 Newcastle WY 8 72/100
21 83001 Jackson WY 8 64/100
22 83002 Jackson WY 8 65/100
23 83128 Alpine WY 8 58/100
24 82201 Wheatland WY 7 78/100
25 82322 Bairoil WY 7 65/100
26 82601 Casper WY 7 62/100
27 82602 Casper WY 7 63/100
28 82604 Casper WY 7 62/100
29 82605 Casper WY 7 63/100
30 82609 Casper WY 7 67/100
31 82712 Beulah WY 7 45/100
32 83014 Wilson WY 7 69/100
33 83114 Cokeville WY 7 62/100
34 82001 Cheyenne WY 6 34/100
35 82002 Cheyenne WY 6 32/100
36 82003 Cheyenne WY 6 44/100
37 82006 Cheyenne WY 6 32/100
38 82007 Cheyenne WY 6 39/100
39 82008 Cheyenne WY 6 32/100
40 82009 Cheyenne WY 6 34/100
41 82010 Cheyenne WY 6 32/100
42 82324 Elk Mountain WY 6 69/100
43 82410 Basin WY 6 69/100
44 82431 Lovell WY 6 57/100
45 82636 Evansville WY 6 67/100
46 82644 Mills WY 6 67/100
47 82716 Gillette WY 6 61/100
48 82717 Gillette WY 6 66/100
49 82718 Gillette WY 6 66/100
50 82723 Osage WY 6 82/100
51 82801 Sheridan WY 6 43/100
52 82834 Buffalo WY 6 63/100
53 82934 Granger WY 6 59/100
54 82213 Glendo WY 5 79/100
55 82443 Thermopolis WY 5 66/100
56 83112 Bedford WY 5 64/100
57 83118 Etna WY 5 64/100
58 82227 Manville WY 4 64/100
59 82411 Burlington WY 4 64/100
60 82433 Meeteetse WY 4 61/100
61 82727 Rozet WY 4 68/100
62 82930 Evanston WY 4 69/100
63 82931 Evanston WY 4 65/100
64 82939 Mountain View WY 4 69/100
65 83012 Moose WY 4 64/100
66 83110 Afton WY 4 66/100
67 82055 Centennial WY 3 65/100
68 82210 Chugwater WY 3 72/100
69 82214 Guernsey WY 3 80/100
70 82401 Worland WY 3 69/100
71 82420 Cowley WY 3 63/100
72 82513 Dubois WY 3 66/100
73 82520 Lander WY 3 69/100
74 82836 Dayton WY 3 60/100
75 82935 Green River WY 3 69/100
76 82937 Lyman WY 3 65/100
77 82941 Pinedale WY 3 63/100
78 83120 Freedom WY 3 69/100
79 83123 La Barge WY 3 60/100
80 82070 Laramie WY 2 69/100
81 82071 Laramie WY 2 65/100
82 82072 Laramie WY 2 69/100
83 82073 Laramie WY 2 65/100
84 82223 Lingle WY 2 69/100
85 82225 Lusk WY 2 69/100
86 82240 Torrington WY 2 56/100
87 82329 Medicine Bow WY 2 32/100
88 82334 Sinclair WY 2 65/100
89 82414 Cody WY 2 64/100
90 82426 Greybull WY 2 66/100
91 82432 Manderson WY 2 49/100
92 82442 Ten Sleep WY 2 68/100
93 82639 Kaycee WY 2 69/100
94 82721 Moorcroft WY 2 61/100
95 82942 Point Of Rocks WY 2 61/100
96 83111 Auburn WY 2 61/100
97 83124 Opal WY 2 64/100
98 83126 Smoot WY 2 65/100
99 82053 Burns WY 1 70/100
100 82054 Carpenter WY 1 65/100

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

Cómo se calcula esta clasificación, fuentes de datos y limitaciones: Metodología de clasificaciones →


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Aviso: Las clasificaciones se basan en datos de la EPA, la FEMA y agencias federales. Reflejan patrones históricos e indicadores de riesgo, no necesariamente las condiciones actuales. Para obtener la información más actual, los residentes pueden comunicarse con la compañía local de agua o solicitar un Informe de Confianza del Consumidor (CCR).

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