2026 Rankings

Worst ZIP Codes for Lead in Water in North Dakota — ...

Last updated: June 4, 2026

235 ZIP codes ranked by Lead (mg/L) #1: ZIP 58760 (Maxbass, ND) — 20.2 ppb
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Out of 235 ZIP codes with data in North Dakota, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All North Dakota Rankings

Statistic Value
ZIP codes ranked 235
Highest value 20.2 ppb
Median value 2.2 ppb
State North Dakota

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (mg/L) Safety Score
1 58760 Maxbass ND 20.2 ppb 11/100
2 58421 Carrington ND 13.9 ppb 48/100
3 58701 Minot ND 13.5 ppb 33/100
4 58702 Minot ND 13.5 ppb 48/100
5 58703 Minot ND 13.5 ppb 33/100
6 58707 Minot ND 13.5 ppb 48/100
7 58054 Lisbon ND 13.0 ppb 40/100
8 58257 Mayville ND 12.9 ppb 45/100
9 58642 Manning ND 12.2 ppb 41/100
10 58012 Casselton ND 12.1 ppb 52/100
11 58790 Velva ND 11.7 ppb 47/100
12 58579 Wilton ND 11.1 ppb 46/100
13 58341 Harvey ND 11.0 ppb 46/100
14 58736 Drake ND 10.5 ppb 48/100
15 58765 Noonan ND 10.4 ppb 47/100
16 58422 Cathay ND 10.2 ppb 47/100
17 58006 Arthur ND 10.0 ppb 50/100
18 58488 Tuttle ND 9.9 ppb 50/100
19 58237 Grafton ND 9.8 ppb 43/100
20 58418 Bowdon ND 8.7 ppb 53/100
21 58324 Cando ND 8.3 ppb 57/100
22 58401 Jamestown ND 7.9 ppb 53/100
23 58402 Jamestown ND 7.9 ppb 63/100
24 58405 Jamestown ND 7.9 ppb 56/100
25 58756 Makoti ND 7.7 ppb 55/100
26 58577 Washburn ND 7.6 ppb 57/100
27 58081 Wyndmere ND 7.0 ppb 65/100
28 58854 Watford City ND 6.8 ppb 64/100
29 58727 Columbus ND 6.8 ppb 66/100
30 58042 Harwood ND 6.7 ppb 51/100
31 58480 Sanborn ND 6.7 ppb 66/100
32 58053 Lidgerwood ND 6.7 ppb 65/100
33 58554 Mandan ND 6.2 ppb 60/100
34 58478 Robinson ND 6.1 ppb 61/100
35 58201 Grand Forks ND 6.1 ppb 47/100
36 58202 Grand Forks ND 6.1 ppb 62/100
37 58203 Grand Forks ND 6.1 ppb 52/100
38 58206 Grand Forks ND 6.1 ppb 62/100
39 58207 Grand Forks ND 6.1 ppb 63/100
40 58208 Grand Forks ND 6.1 ppb 67/100
41 58277 Sharon ND 6.0 ppb 62/100
42 58540 Garrison ND 5.9 ppb 68/100
43 58235 Gilby ND 5.8 ppb 68/100
44 58759 Max ND 5.7 ppb 68/100
45 58831 Alexander ND 5.3 ppb 69/100
46 58261 Minto ND 4.9 ppb 55/100
47 58781 Sawyer ND 4.9 ppb 63/100
48 58230 Finley ND 4.7 ppb 66/100
49 58254 Mcville ND 4.6 ppb 70/100
50 58737 Flaxton ND 4.5 ppb 67/100
51 58472 Montpelier ND 4.5 ppb 70/100
52 58576 Underwood ND 4.4 ppb 70/100
53 58367 Rolla ND 4.3 ppb 66/100
54 58601 Dickinson ND 4.2 ppb 65/100
55 58602 Dickinson ND 4.2 ppb 66/100
56 58530 Center ND 4.1 ppb 67/100
57 58545 Hazen ND 4.1 ppb 70/100
58 58348 Maddock ND 4.0 ppb 66/100
59 58461 Litchville ND 4.0 ppb 66/100
60 58750 Lansford ND 3.9 ppb 66/100
61 58531 Coleharbor ND 3.8 ppb 65/100
62 58225 Drayton ND 3.7 ppb 53/100
63 58474 Oakes ND 3.7 ppb 68/100
64 58571 Stanton ND 3.6 ppb 66/100
65 58580 Zap ND 3.6 ppb 70/100
66 58621 Beach ND 3.5 ppb 70/100
67 58356 New Rockford ND 3.5 ppb 62/100
68 58058 Mantador ND 3.4 ppb 66/100
69 58529 Carson ND 3.4 ppb 69/100
70 58458 Lamoure ND 3.2 ppb 85/100
71 58048 Hunter ND 3.2 ppb 67/100
72 58788 Towner ND 3.1 ppb 69/100
73 58744 Karlsruhe ND 3.0 ppb 67/100
74 58436 Ellendale ND 3.0 ppb 66/100
75 58501 Bismarck ND 2.8 ppb 57/100
76 58502 Bismarck ND 2.8 ppb 62/100
77 58503 Bismarck ND 2.8 ppb 52/100
78 58504 Bismarck ND 2.8 ppb 47/100
79 58505 Bismarck ND 2.8 ppb 55/100
80 58506 Bismarck ND 2.8 ppb 55/100
81 58507 Bismarck ND 2.8 ppb 55/100
82 58521 Baldwin ND 2.8 ppb 40/100
83 58064 Page ND 2.8 ppb 66/100
84 58772 Portal ND 2.7 ppb 66/100
85 58784 Stanley ND 2.7 ppb 70/100
86 58265 Neche ND 2.6 ppb 65/100
87 58495 Wishek ND 2.6 ppb 66/100
88 58625 Dodge ND 2.6 ppb 66/100
89 58267 Northwood ND 2.6 ppb 67/100
90 58845 Grenora ND 2.5 ppb 66/100
91 58773 Powers Lake ND 2.4 ppb 66/100
92 58463 Mcclusky ND 2.4 ppb 64/100
93 58249 Langdon ND 2.4 ppb 69/100
94 58441 Fullerton ND 2.4 ppb 64/100
95 58074 Wahpeton ND 2.4 ppb 66/100
96 58075 Wahpeton ND 2.4 ppb 60/100
97 58076 Wahpeton ND 2.4 ppb 66/100
98 58645 Medora ND 2.4 ppb 61/100
99 58078 West Fargo ND 2.3 ppb 47/100
100 58102 Fargo ND 2.3 ppb 55/100

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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