2026 Rankings

Worst ZIP Codes for Lead in Water in Minnesota — 2026

Last updated: June 4, 2026

629 ZIP codes ranked by Lead (mg/L) #1: ZIP 56131 (Fulda, MN) — 35.0 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 629 ZIP codes with data in Minnesota, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All Minnesota Rankings

Statistic Value
ZIP codes ranked 629
Highest value 35.0 ppb
Median value 2.0 ppb
State Minnesota

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (mg/L) Safety Score
1 56131 Fulda MN 35.0 ppb 33/100
2 55746 Hibbing MN 32.0 ppb 53/100
3 55747 Hibbing MN 32.0 ppb 45/100
4 56727 Grygla MN 29.0 ppb 33/100
5 56230 Danube MN 23.0 ppb 45/100
6 55751 Iron MN 20.0 ppb 50/100
7 56360 Osakis MN 18.0 ppb 44/100
8 56716 Crookston MN 17.0 ppb 35/100
9 55349 Howard Lake MN 15.0 ppb 33/100
10 55575 Howard Lake MN 15.0 ppb 33/100
11 56270 Morton MN 14.0 ppb 45/100
12 55601 Beaver Bay MN 13.0 ppb 52/100
13 56009 Alden MN 12.0 ppb 42/100
14 56010 Amboy MN 12.0 ppb 42/100
15 56115 Balaton MN 12.0 ppb 43/100
16 55031 Hampton MN 11.0 ppb 55/100
17 55795 Willow River MN 11.0 ppb 68/100
18 56013 Blue Earth MN 11.0 ppb 55/100
19 56143 Jackson MN 11.0 ppb 50/100
20 56219 Browns Valley MN 11.0 ppb 45/100
21 55760 Mcgregor MN 10.0 ppb 61/100
22 55923 Chatfield MN 10.0 ppb 58/100
23 55971 Rushford MN 10.0 ppb 58/100
24 56069 Montgomery MN 10.0 ppb 50/100
25 56241 Granite Falls MN 10.0 ppb 48/100
26 56547 Glyndon MN 10.0 ppb 53/100
27 55733 Esko MN 9.6 ppb 63/100
28 55779 Saginaw MN 9.6 ppb 63/100
29 55791 Twig MN 9.6 ppb 53/100
30 55801 Duluth MN 9.6 ppb 73/100
31 55802 Duluth MN 9.6 ppb 76/100
32 55803 Duluth MN 9.6 ppb 71/100
33 55804 Duluth MN 9.6 ppb 76/100
34 55805 Duluth MN 9.6 ppb 76/100
35 55806 Duluth MN 9.6 ppb 76/100
36 55807 Duluth MN 9.6 ppb 76/100
37 55808 Duluth MN 9.6 ppb 71/100
38 55810 Duluth MN 9.6 ppb 71/100
39 55811 Duluth MN 9.6 ppb 76/100
40 55812 Duluth MN 9.6 ppb 76/100
41 55814 Duluth MN 9.6 ppb 73/100
42 55815 Duluth MN 9.6 ppb 73/100
43 55816 Duluth MN 9.6 ppb 73/100
44 55088 Webster MN 9.0 ppb 60/100
45 55961 Ostrander MN 9.0 ppb 53/100
46 56021 Courtland MN 9.0 ppb 52/100
47 56098 Winnebago MN 9.0 ppb 60/100
48 56152 Lamberton MN 9.0 ppb 53/100
49 55384 Spring Park MN 8.0 ppb 56/100
50 56224 Clements MN 8.0 ppb 56/100
51 56248 Herman MN 8.0 ppb 56/100
52 56258 Marshall MN 8.0 ppb 53/100
53 56382 Swanville MN 8.0 ppb 71/100
54 56446 Eagle Bend MN 8.0 ppb 63/100
55 56481 Verndale MN 8.0 ppb 56/100
56 56537 Fergus Falls MN 8.0 ppb 38/100
57 56538 Fergus Falls MN 8.0 ppb 38/100
58 55075 South Saint Paul MN 7.8 ppb 53/100
59 55076 Inver Grove Heights MN 7.8 ppb 58/100
60 55077 Inver Grove Heights MN 7.8 ppb 58/100
61 55118 Saint Paul MN 7.8 ppb 45/100
62 55120 Saint Paul MN 7.8 ppb 40/100
63 55121 Saint Paul MN 7.8 ppb 40/100
64 55123 Saint Paul MN 7.8 ppb 53/100
65 55052 Morristown MN 7.0 ppb 63/100
66 55387 Waconia MN 7.0 ppb 65/100
67 55985 West Concord MN 7.0 ppb 65/100
68 56068 Minnesota Lake MN 7.0 ppb 65/100
69 56071 New Prague MN 7.0 ppb 65/100
70 56075 Northrop MN 7.0 ppb 59/100
71 56127 Dunnell MN 7.0 ppb 59/100
72 56166 Revere MN 7.0 ppb 59/100
73 56283 Redwood Falls MN 7.0 ppb 65/100
74 56284 Renville MN 7.0 ppb 59/100
75 56364 Pierz MN 7.0 ppb 75/100
76 56572 Pelican Rapids MN 7.0 ppb 40/100
77 56701 Thief River Falls MN 7.0 ppb 56/100
78 56760 Viking MN 7.0 ppb 59/100
79 55324 Darwin MN 6.0 ppb 66/100
80 55390 Waverly MN 6.0 ppb 68/100
81 55616 Two Harbors MN 6.0 ppb 81/100
82 55726 Cromwell MN 6.0 ppb 80/100
83 55765 Meadowlands MN 6.0 ppb 75/100
84 55922 Canton MN 6.0 ppb 63/100
85 55973 Sargeant MN 6.0 ppb 63/100
86 56022 Darfur MN 6.0 ppb 63/100
87 56128 Edgerton MN 6.0 ppb 63/100
88 56129 Ellsworth MN 6.0 ppb 57/100
89 56153 Leota MN 6.0 ppb 63/100
90 56176 Trimont MN 6.0 ppb 63/100
91 56177 Trosky MN 6.0 ppb 61/100
92 56381 Starbuck MN 6.0 ppb 68/100
93 56621 Bagley MN 6.0 ppb 76/100
94 55021 Faribault MN 5.0 ppb 61/100
95 55041 Lake City MN 5.0 ppb 60/100
96 55073 Scandia MN 5.0 ppb 60/100
97 55718 Carlton MN 5.0 ppb 83/100
98 55731 Ely MN 5.0 ppb 78/100
99 55767 Moose Lake MN 5.0 ppb 81/100
100 55939 Harmony MN 5.0 ppb 66/100

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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