2026 Rankings

Worst ZIP Codes for Lead in Water in Utah — 2026

Last updated: August 11, 2026

193 ZIP codes ranked by Lead (ppb) #1: ZIP 84335 (Smithfield, UT) - 46.0 ppb
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Out of 193 ZIP codes with data in Utah, these are the highest-ranked areas for lead (ppb). See also: National Worst ZIP Codes for Lead in Water | All Utah Rankings

Statistic Value
ZIP codes ranked 193
Highest value 46.0 ppb
Median value 3.7 ppb
State Utah

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (ppb) Safety Score
1 84335 Smithfield UT 46.0 ppb 67/100
2 84026 Fort Duchesne UT 13.7 ppb —
3 84039 Lapoint UT 13.7 ppb —
4 84066 Roosevelt UT 13.7 ppb 51/100
5 84078 Vernal UT 13.7 ppb 65/100
6 84085 Whiterocks UT 13.7 ppb —
7 84010 Bountiful UT 13.5 ppb 56/100
8 84087 Woods Cross UT 13.5 ppb 56/100
9 84321 Logan UT 11.7 ppb 75/100
10 84332 Providence UT 11.7 ppb 81/100
11 84319 Hyrum UT 11.3 ppb 81/100
12 84328 Paradise UT 11.3 ppb —
13 84339 Wellsville UT 11.3 ppb 81/100
14 84317 Huntsville UT 11.0 ppb —
15 84109 Salt Lake City UT 10.7 ppb 57/100
16 84074 Tooele UT 8.7 ppb 67/100
17 84054 North Salt Lake UT 8.6 ppb 58/100
18 84098 Park City UT 8.2 ppb —
19 84302 Brigham City UT 8.0 ppb 67/100
20 84306 Collinston UT 8.0 ppb —
21 84309 Deweyville UT 8.0 ppb —
22 84311 Fielding UT 8.0 ppb —
23 84312 Garland UT 8.0 ppb —
24 84314 Honeyville UT 8.0 ppb —
25 84337 Tremonton UT 8.0 ppb 67/100
26 84014 Centerville UT 7.2 ppb 74/100
27 84035 Jensen UT 7.1 ppb 67/100
28 84063 Randlett UT 7.1 ppb —
29 84403 Ogden UT 6.7 ppb —
30 84405 Ogden UT 6.7 ppb 82/100
31 84713 Beaver UT 6.4 ppb —
32 84731 Greenville UT 6.4 ppb —
33 84003 American Fork UT 6.0 ppb 67/100
34 84005 Eagle Mountain UT 6.0 ppb 78/100
35 84020 Draper UT 6.0 ppb 68/100
36 84065 Riverton UT 6.0 ppb 68/100
37 84070 Sandy UT 6.0 ppb 58/100
38 84095 South Jordan UT 6.0 ppb 75/100
39 84025 Farmington UT 5.9 ppb 72/100
40 84037 Kaysville UT 5.9 ppb 74/100
41 84040 Layton UT 5.9 ppb 74/100
42 84092 Sandy UT 5.7 ppb 51/100
43 84093 Sandy UT 5.7 ppb 51/100
44 84094 Sandy UT 5.7 ppb 68/100
45 84049 Midway UT 5.6 ppb 67/100
46 84036 Kamas UT 5.5 ppb —
47 84055 Oakley UT 5.5 ppb —
48 84061 Peoa UT 5.5 ppb —
49 84108 Salt Lake City UT 5.5 ppb 56/100
50 84112 Salt Lake City UT 5.5 ppb 56/100
51 84113 Salt Lake City UT 5.5 ppb 56/100
52 84318 Hyde Park UT 5.3 ppb 77/100
53 84341 Logan UT 5.3 ppb 77/100
54 84047 Midvale UT 5.0 ppb 42/100
55 84106 Salt Lake City UT 5.0 ppb 57/100
56 84107 Salt Lake City UT 5.0 ppb 42/100
57 84115 Salt Lake City UT 5.0 ppb 57/100
58 84117 Salt Lake City UT 5.0 ppb 58/100
59 84119 Salt Lake City UT 5.0 ppb 57/100
60 84121 Salt Lake City UT 5.0 ppb 50/100
61 84123 Salt Lake City UT 5.0 ppb 75/100
62 84124 Salt Lake City UT 5.0 ppb 58/100
63 84057 Orem UT 5.0 ppb 82/100
64 84058 Orem UT 5.0 ppb 82/100
65 84059 Orem UT 5.0 ppb 67/100
66 84017 Coalville UT 4.5 ppb —
67 84060 Park City UT 4.5 ppb —
68 84627 Ephraim UT 4.5 ppb —
69 84642 Manti UT 4.5 ppb —
70 84015 Clearfield UT 4.4 ppb 78/100
71 84075 Syracuse UT 4.4 ppb 81/100
72 84315 Hooper UT 4.4 ppb 83/100
73 84032 Heber City UT 4.3 ppb 67/100
74 84601 Provo UT 4.3 ppb 83/100
75 84602 Provo UT 4.3 ppb —
76 84604 Provo UT 4.3 ppb 83/100
77 84606 Provo UT 4.3 ppb 80/100
78 84041 Layton UT 4.2 ppb 80/100
79 84325 Mendon UT 4.2 ppb —
80 84327 Newton UT 4.2 ppb —
81 84338 Trenton UT 4.2 ppb —
82 84009 South Jordan UT 4.1 ppb —
83 84081 West Jordan UT 4.1 ppb 75/100
84 84088 West Jordan UT 4.1 ppb 74/100
85 84056 Hill Afb UT 4.1 ppb 83/100
86 84326 Millville UT 4.0 ppb —
87 84651 Payson UT 4.0 ppb 67/100
88 84653 Salem UT 4.0 ppb 67/100
89 84660 Spanish Fork UT 4.0 ppb 67/100
90 84006 Bingham Canyon UT 3.8 ppb —
91 84096 Herriman UT 3.8 ppb 72/100
92 84042 Lindon UT 3.7 ppb 67/100
93 84043 Lehi UT 3.7 ppb 67/100
94 84062 Pleasant Grove UT 3.7 ppb 67/100
95 84305 Clarkston UT 3.7 ppb —
96 84308 Cornish UT 3.7 ppb —
97 84320 Lewiston UT 3.7 ppb —
98 84720 Cedar City UT 3.7 ppb 67/100
99 84737 Hurricane UT 3.7 ppb 80/100
100 84530 La Sal UT 3.6 ppb —

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: 2026-08-11.

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.

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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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