2026 Rankings

ZIP Codes with Most EPA Violations in Alaska — 2026

Last updated: June 4, 2026

207 ZIP codes ranked by Violations #1: ZIP 99501 (Anchorage, AK) — 292
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 207 ZIP codes with data in Alaska, these are the highest-ranked areas for violations. See also: National ZIP Codes with Most EPA Water Violations | All Alaska Rankings

Statistic Value
ZIP codes ranked 207
Highest value 292
Median value 28
State Alaska

Top 100 Worst ZIP Codes

Rank ZIP Code City State Violations Safety Score
1 99501 Anchorage AK 292 70/100
2 99502 Anchorage AK 292 70/100
3 99503 Anchorage AK 292 70/100
4 99504 Anchorage AK 292 65/100
5 99507 Anchorage AK 292 65/100
6 99508 Anchorage AK 292 65/100
7 99509 Anchorage AK 292 66/100
8 99510 Anchorage AK 292 70/100
9 99511 Anchorage AK 292 66/100
10 99513 Anchorage AK 292 66/100
11 99514 Anchorage AK 292 66/100
12 99515 Anchorage AK 292 70/100
13 99516 Anchorage AK 292 70/100
14 99517 Anchorage AK 292 70/100
15 99518 Anchorage AK 292 70/100
16 99519 Anchorage AK 292 70/100
17 99520 Anchorage AK 292 66/100
18 99521 Anchorage AK 292 66/100
19 99522 Anchorage AK 292 66/100
20 99523 Anchorage AK 292 66/100
21 99524 Anchorage AK 292 66/100
22 99529 Anchorage AK 292 66/100
23 99530 Anchorage AK 292 66/100
24 99599 Anchorage AK 292 66/100
25 99695 Anchorage AK 292 66/100
26 99666 Nunam Iqua AK 167 55/100
27 99820 Angoon AK 163 69/100
28 99553 Akutan AK 149 98/100
29 99668 Sleetmute AK 147 79/100
30 99675 Takotna AK 144 81/100
31 99788 Chalkyitsik AK 140 64/100
32 99559 Bethel AK 136 81/100
33 99622 Kwigillingok AK 134 81/100
34 99640 Nondalton AK 129 87/100
35 99745 Hughes AK 126 92/100
36 99545 Kongiganak AK 125 94/100
37 99662 Scammon Bay AK 119 68/100
38 99677 Tatitlek AK 107 22/100
39 99684 Unalakleet AK 106 36/100
40 99669 Soldotna AK 103 53/100
41 99554 Alakanuk AK 102 82/100
42 99777 Tanana AK 101 72/100
43 99722 Arctic Village AK 96 81/100
44 99770 Selawik AK 92 70/100
45 99771 Shaktoolik AK 91 88/100
46 99778 Teller AK 89 80/100
47 99609 Kasigluk AK 88 95/100
48 99922 Hydaburg AK 83 77/100
49 99681 Tununak AK 82 97/100
50 99665 Shageluk AK 79 87/100
51 99575 Crooked Creek AK 75 76/100
52 99581 Emmonak AK 74 67/100
53 99578 Eek AK 73 98/100
54 99558 Anvik AK 71 94/100
55 99781 Venetie AK 71 97/100
56 99643 Old Harbor AK 70 43/100
57 99736 Deering AK 69 66/100
58 99679 Tuluksak AK 67 94/100
59 99750 Kivalina AK 66 66/100
60 99836 Port Alexander AK 66 83/100
61 99727 Buckland AK 65 66/100
62 99754 Koyukuk AK 64 79/100
63 99621 Kwethluk AK 62 70/100
64 99720 Allakaket AK 62 94/100
65 99620 Kotlik AK 61 62/100
66 99680 Tuntutuliak AK 57 97/100
67 99758 Minto AK 56 92/100
68 99767 Rampart AK 52 94/100
69 99774 Stevens Village AK 52 98/100
70 99664 Seward AK 51 66/100
71 99589 Goodnews Bay AK 50 81/100
72 99651 Platinum AK 50 81/100
73 99548 Chignik Lake AK 49 81/100
74 99751 Kobuk AK 48 74/100
75 99773 Shungnak AK 47 95/100
76 99658 Saint Marys AK 46 75/100
77 99753 Koyuk AK 46 93/100
78 99648 Perryville AK 45 81/100
79 99741 Galena AK 45 67/100
80 99768 Ruby AK 45 74/100
81 99830 Kake AK 45 39/100
82 99604 Hooper Bay AK 43 84/100
83 99772 Shishmaref AK 43 88/100
84 99614 Kipnuk AK 42 81/100
85 99628 Manokotak AK 41 89/100
86 99742 Gambell AK 41 93/100
87 99546 Adak AK 40 62/100
88 99783 Wales AK 39 75/100
89 99561 Chefornak AK 38 97/100
90 99655 Quinhagak AK 37 85/100
91 99733 Circle AK 37 81/100
92 99776 Tanacross AK 35 78/100
93 99739 Elim AK 34 88/100
94 99901 Ketchikan AK 34 65/100
95 99950 Ketchikan AK 34 67/100
96 99746 Huslia AK 32 81/100
97 99827 Haines AK 32 94/100
98 99611 Kenai AK 31 79/100
99 99690 Nightmute AK 31 73/100
100 99547 Atka AK 30 94/100

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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