2026 Rankings

Worst ZIP Codes for Lead in Water in Alaska — 2026

Last updated: June 4, 2026

216 ZIP codes ranked by Lead (mg/L) #1: ZIP 99677 (Tatitlek, AK) — 71.0 ppb
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 216 ZIP codes with data in Alaska, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All Alaska Rankings

Statistic Value
ZIP codes ranked 216
Highest value 71.0 ppb
Median value 2.1 ppb
State Alaska

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (mg/L) Safety Score
1 99677 Tatitlek AK 71.0 ppb 22/100
2 99919 Thorne Bay AK 16.3 ppb 54/100
3 99684 Unalakleet AK 14.0 ppb 36/100
4 99835 Sitka AK 14.0 ppb 64/100
5 99546 Adak AK 13.0 ppb 62/100
6 99643 Old Harbor AK 12.0 ppb 43/100
7 99569 Clarks Point AK 10.1 ppb 80/100
8 99690 Nightmute AK 10.0 ppb 73/100
9 99764 Northway AK 10.0 ppb 65/100
10 99830 Kake AK 10.0 ppb 39/100
11 99704 Clear AK 8.6 ppb 86/100
12 99668 Sleetmute AK 7.9 ppb 79/100
13 99752 Kotzebue AK 7.5 ppb 59/100
14 99778 Teller AK 7.2 ppb 80/100
15 99741 Galena AK 7.0 ppb 67/100
16 99768 Ruby AK 7.0 ppb 74/100
17 99575 Crooked Creek AK 6.5 ppb 76/100
18 99551 Akiachak AK 6.2 ppb 79/100
19 99556 Anchor Point AK 6.2 ppb 78/100
20 99550 Port Lions AK 6.1 ppb 83/100
21 99613 King Salmon AK 6.1 ppb 94/100
22 99628 Manokotak AK 6.1 ppb 89/100
23 99574 Cordova AK 6.0 ppb 82/100
24 99738 Eagle AK 6.0 ppb 71/100
25 99634 Napakiak AK 5.8 ppb 95/100
26 99609 Kasigluk AK 5.6 ppb 95/100
27 99637 Toksook Bay AK 5.6 ppb 93/100
28 99829 Hoonah AK 5.6 ppb 80/100
29 99754 Koyukuk AK 5.5 ppb 79/100
30 99788 Chalkyitsik AK 5.5 ppb 64/100
31 99789 Nuiqsut AK 5.0 ppb 97/100
32 99563 Chevak AK 4.9 ppb 86/100
33 99682 Tyonek AK 4.9 ppb 78/100
34 99650 Pilot Station AK 4.8 ppb 75/100
35 99724 Beaver AK 4.8 ppb 84/100
36 99686 Valdez AK 4.7 ppb 87/100
37 99740 Fort Yukon AK 4.6 ppb 81/100
38 99779 Tok AK 4.6 ppb 81/100
39 99780 Tok AK 4.6 ppb 81/100
40 99921 Craig AK 4.6 ppb 87/100
41 99669 Soldotna AK 4.5 ppb 53/100
42 99545 Kongiganak AK 4.5 ppb 94/100
43 99774 Stevens Village AK 4.5 ppb 98/100
44 99820 Angoon AK 4.5 ppb 69/100
45 99771 Shaktoolik AK 4.2 ppb 88/100
46 99675 Takotna AK 4.1 ppb 81/100
47 99559 Bethel AK 4.0 ppb 81/100
48 99615 Kodiak AK 3.9 ppb 98/100
49 99619 Kodiak AK 3.9 ppb 98/100
50 99644 Ouzinkie AK 3.9 ppb 97/100
51 99697 Kodiak AK 3.9 ppb 98/100
52 99670 South Naknek AK 3.8 ppb 98/100
53 99547 Atka AK 3.7 ppb 94/100
54 99925 Klawock AK 3.6 ppb 55/100
55 99833 Petersburg AK 3.5 ppb 86/100
56 99548 Chignik Lake AK 3.4 ppb 81/100
57 99579 Egegik AK 3.4 ppb 98/100
58 99767 Rampart AK 3.4 ppb 94/100
59 99714 Salcha AK 3.3 ppb 72/100
60 99659 Saint Michael AK 3.2 ppb 97/100
61 99623 Wasilla AK 3.1 ppb 75/100
62 99629 Wasilla AK 3.1 ppb 73/100
63 99654 Wasilla AK 3.1 ppb 75/100
64 99687 Wasilla AK 3.1 ppb 75/100
65 99685 Unalaska AK 3.1 ppb 94/100
66 99576 Dillingham AK 3.0 ppb 98/100
67 99736 Deering AK 2.9 ppb 66/100
68 99840 Skagway AK 2.9 ppb 87/100
69 99622 Kwigillingok AK 2.9 ppb 81/100
70 99587 Girdwood AK 2.8 ppb 94/100
71 99641 Nunapitchuk AK 2.8 ppb 95/100
72 99577 Eagle River AK 2.7 ppb 89/100
73 99635 Nikiski AK 2.7 ppb 82/100
74 99746 Huslia AK 2.7 ppb 81/100
75 99751 Kobuk AK 2.6 ppb 74/100
76 99745 Hughes AK 2.6 ppb 92/100
77 99769 Savoonga AK 2.6 ppb 91/100
78 99922 Hydaburg AK 2.5 ppb 77/100
79 99671 Stebbins AK 2.5 ppb 86/100
80 99773 Shungnak AK 2.5 ppb 95/100
81 99836 Port Alexander AK 2.5 ppb 83/100
82 99901 Ketchikan AK 2.5 ppb 65/100
83 99950 Ketchikan AK 2.5 ppb 67/100
84 99661 Sand Point AK 2.5 ppb 92/100
85 99762 Nome AK 2.4 ppb 84/100
86 99703 Fort Wainwright AK 2.4 ppb 83/100
87 99733 Circle AK 2.4 ppb 81/100
88 99645 Palmer AK 2.3 ppb 77/100
89 99651 Platinum AK 2.3 ppb 81/100
90 99701 Fairbanks AK 2.3 ppb 68/100
91 99706 Fairbanks AK 2.3 ppb 77/100
92 99707 Fairbanks AK 2.3 ppb 78/100
93 99708 Fairbanks AK 2.3 ppb 78/100
94 99709 Fairbanks AK 2.3 ppb 68/100
95 99710 Fairbanks AK 2.3 ppb 78/100
96 99711 Fairbanks AK 2.3 ppb 77/100
97 99712 Fairbanks AK 2.3 ppb 78/100
98 99725 Ester AK 2.3 ppb 50/100
99 99765 Nulato AK 2.3 ppb 98/100
100 99775 Fairbanks AK 2.3 ppb 77/100

Methodology

Lead rankings are based on the 90th percentile lead testing value (PB90) reported by water systems under the Lead and Copper Rule. When CCR data is unavailable, EPA SDWIS lead sampling data is used. The EPA action level for lead is 15 ppb (0.015 mg/L). There is no safe level of lead exposure.

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 is a dangerous lead level in water?

The EPA action level is 15 parts per billion (ppb). The American Academy of Pediatrics recommends no more than 1 ppb for school drinking water. There is no safe level of lead exposure for children.

How is lead measured in water?

Water systems collect samples from homes with known lead service lines or lead solder. The 90th percentile value (PB90) means 90% of samples tested below that level. If PB90 exceeds 15 ppb, the system must take corrective action.

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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