2026 Rankings

Worst ZIP Codes for Lead in Water in Wyoming — 2026

Last updated: June 4, 2026

136 ZIP codes ranked by Lead (mg/L) #1: ZIP 82922 (Bondurant, WY) — 58.0 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 136 ZIP codes with data in Wyoming, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All Wyoming Rankings

Statistic Value
ZIP codes ranked 136
Highest value 58.0 ppb
Median value 2.0 ppb
State Wyoming

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (mg/L) Safety Score
1 82922 Bondurant WY 58.0 ppb 53/100
2 83001 Jackson WY 58.0 ppb 64/100
3 83002 Jackson WY 58.0 ppb 65/100
4 82329 Medicine Bow WY 56.0 ppb 32/100
5 82432 Manderson WY 13.0 ppb 49/100
6 82222 Lance Creek WY 11.0 ppb 13/100
7 82240 Torrington WY 10.0 ppb 56/100
8 82801 Sheridan WY 10.0 ppb 43/100
9 82001 Cheyenne WY 9.0 ppb 34/100
10 82002 Cheyenne WY 9.0 ppb 32/100
11 82003 Cheyenne WY 9.0 ppb 44/100
12 82006 Cheyenne WY 9.0 ppb 32/100
13 82007 Cheyenne WY 9.0 ppb 39/100
14 82008 Cheyenne WY 9.0 ppb 32/100
15 82009 Cheyenne WY 9.0 ppb 34/100
16 82010 Cheyenne WY 9.0 ppb 32/100
17 82059 Granite Canon WY 9.0 ppb 40/100
18 82060 Hillsdale WY 9.0 ppb 40/100
19 82321 Baggs WY 9.0 ppb 30/100
20 82210 Chugwater WY 8.0 ppb 72/100
21 82215 Hartville WY 8.0 ppb 73/100
22 82050 Albin WY 7.0 ppb 49/100
23 82633 Douglas WY 6.0 ppb 68/100
24 83111 Auburn WY 6.0 ppb 61/100
25 82212 Fort Laramie WY 5.0 ppb 66/100
26 82441 Shell WY 5.0 ppb 70/100
27 83013 Moran WY 5.0 ppb 70/100
28 83120 Freedom WY 5.0 ppb 69/100
29 82190 Yellowstone National Park WY 4.0 ppb 66/100
30 82334 Sinclair WY 4.0 ppb 65/100
31 82443 Thermopolis WY 4.0 ppb 66/100
32 82501 Riverton WY 4.0 ppb 54/100
33 82649 Shoshoni WY 4.0 ppb 64/100
34 82836 Dayton WY 4.0 ppb 60/100
35 82929 Little America WY 4.0 ppb 66/100
36 82945 Superior WY 4.0 ppb 56/100
37 82201 Wheatland WY 3.0 ppb 78/100
38 82213 Glendo WY 3.0 ppb 79/100
39 82401 Worland WY 3.0 ppb 69/100
40 82410 Basin WY 3.0 ppb 69/100
41 82420 Cowley WY 3.0 ppb 63/100
42 82431 Lovell WY 3.0 ppb 57/100
43 82520 Lander WY 3.0 ppb 69/100
44 82716 Gillette WY 3.0 ppb 61/100
45 82717 Gillette WY 3.0 ppb 66/100
46 82718 Gillette WY 3.0 ppb 66/100
47 82720 Hulett WY 3.0 ppb 66/100
48 82721 Moorcroft WY 3.0 ppb 61/100
49 82723 Osage WY 3.0 ppb 82/100
50 82727 Rozet WY 3.0 ppb 68/100
51 82732 Wright WY 3.0 ppb 70/100
52 82901 Rock Springs WY 3.0 ppb 64/100
53 82902 Rock Springs WY 3.0 ppb 65/100
54 83014 Wilson WY 3.0 ppb 69/100
55 83118 Etna WY 3.0 ppb 64/100
56 83123 La Barge WY 3.0 ppb 60/100
57 83414 Alta WY 3.0 ppb 66/100
58 82325 Encampment WY 2.7 ppb 66/100
59 82835 Clearmont WY 2.5 ppb 66/100
60 82054 Carpenter WY 2.0 ppb 65/100
61 82082 Pine Bluffs WY 2.0 ppb 61/100
62 82225 Lusk WY 2.0 ppb 69/100
63 82244 Yoder WY 2.0 ppb 70/100
64 82323 Dixon WY 2.0 ppb 50/100
65 82324 Elk Mountain WY 2.0 ppb 69/100
66 82327 Hanna WY 2.0 ppb 66/100
67 82336 Wamsutter WY 2.0 ppb 66/100
68 82433 Meeteetse WY 2.0 ppb 61/100
69 82435 Powell WY 2.0 ppb 70/100
70 82442 Ten Sleep WY 2.0 ppb 68/100
71 82636 Evansville WY 2.0 ppb 67/100
72 82637 Glenrock WY 2.0 ppb 69/100
73 82643 Midwest WY 2.0 ppb 66/100
74 82729 Sundance WY 2.0 ppb 66/100
75 82730 Upton WY 2.0 ppb 83/100
76 82834 Buffalo WY 2.0 ppb 63/100
77 82934 Granger WY 2.0 ppb 59/100
78 82935 Green River WY 2.0 ppb 69/100
79 83012 Moose WY 2.0 ppb 64/100
80 83025 Teton Village WY 2.0 ppb 70/100
81 83101 Kemmerer WY 2.0 ppb 36/100
82 83113 Big Piney WY 2.0 ppb 61/100
83 83119 Fairview WY 2.0 ppb 56/100
84 83124 Opal WY 2.0 ppb 64/100
85 83128 Alpine WY 2.0 ppb 58/100
86 82055 Centennial WY 1.3 ppb 65/100
87 82083 Rock River WY 1.3 ppb 64/100
88 82051 Bosler WY 1.3 ppb 40/100
89 82052 Buford WY 1.3 ppb 40/100
90 82061 Horse Creek WY 1.3 ppb 40/100
91 82070 Laramie WY 1.3 ppb 69/100
92 82071 Laramie WY 1.3 ppb 65/100
93 82072 Laramie WY 1.3 ppb 69/100
94 82073 Laramie WY 1.3 ppb 65/100
95 82084 Tie Siding WY 1.3 ppb 40/100
96 83114 Cokeville WY 1.1 ppb 62/100
97 82053 Burns WY 1.0 ppb 70/100
98 82214 Guernsey WY 1.0 ppb 80/100
99 82223 Lingle WY 1.0 ppb 69/100
100 82227 Manville WY 1.0 ppb 64/100

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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