These water systems have the highest measured lead concentrations. The EPA action level is 15 ppb. Systems shown may require additional treatment or infrastructure improvements.
21.51 ppb
Highest Lead Level
12.05 ppb
Average (Top 25)
15 ppb
EPA Action Level
Lead exposure can cause serious health problems, especially for children and pregnant women. It affects brain development and can cause learning difficulties, behavioral problems, and reduced IQ.
If your water system appears on this list, consider using a certified lead-removal filter and having your tap water tested. Contact your water provider for more information about lead reduction programs.
| Rank | City & System | Lead (ppb) | Overall Score | Action |
|---|---|---|---|---|
#1 | CASS LAKE 055294205 | 21.51 Exceeds EPA action level | F30 | View Details → |
#2 | Columbia Heights MN1020016 | 20.90 Exceeds EPA action level | F20 | View Details → |
#3 | AITKIN MN1010012 | 18.26 Exceeds EPA action level | F40 | View Details → |
#4 | Rochester MN1550003 | 18.20 Exceeds EPA action level | F0 | View Details → |
#5 | Mankato MN1070012 | 15.80 Exceeds EPA action level | F20 | View Details → |
#6 | Monticello MN1860013 | 15.10 Exceeds EPA action level | F30 | View Details → |
#7 | Inver Grove Heights MN1190014 | 12.90 86% of EPA limit | F35 | View Details → |
#8 | CASS LAKE 055294204 | 12.41 83% of EPA limit | F45 | View Details → |
#9 | Thief River Falls MN1570003 | 12.20 81% of EPA limit | F35 | View Details → |
#10 | Detroit Lakes MN1030006 | 11.70 78% of EPA limit | F45 | View Details → |
#11 | Hastings MN1190031 | 11.10 74% of EPA limit | F45 | View Details → |
#12 | ST CLOUD MN1730031 | 10.30 69% of EPA limit | F35 | View Details → |
#13 | Aitkin MN1010001 | 10.08 67% of EPA limit | F45 | View Details → |
#14 | ST CLOUD MN1730044 | 10.00 67% of EPA limit | C75 | View Details → |
#15 | Redwood Falls MN1650015 | 9.90 66% of EPA limit | C75 | View Details → |
#16 | ST CLOUD MN1730049 | 9.70 65% of EPA limit | C75 | View Details → |
#17 | ROCHESTER MN1550017 | 9.70 65% of EPA limit | C75 | View Details → |
#18 | Fergus Falls MN1560028 | 9.20 61% of EPA limit | F45 | View Details → |
#19 | Ramsey MN1020035 | 9.10 61% of EPA limit | F45 | View Details → |
#20 | RICHFIELD MN1270060 | 9.00 60% of EPA limit | C75 | View Details → |
#21 | Ely MN1690014 | 9.00 60% of EPA limit | F45 | View Details → |
#22 | Hastings MN1190012 | 8.90 59% of EPA limit | C75 | View Details → |
#23 | Minneapolis MN1180016 | 8.80 59% of EPA limit | C75 | View Details → |
#24 | Owatonna MN1740007 | 8.80 59% of EPA limit | F45 | View Details → |
#25 | Hutchinson MN1430004 | 8.80 59% of EPA limit | F45 | View Details → |
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