Mankato, Minnesota Water Quality Report
Water quality data for 8 water systems serving 43,913 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 34.8 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 348% | Above guideline |
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Compliance & Violations
Active Violations (22)
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2024
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Resolved Violations (294)
4H
Jul 2, 2025
4H
Jul 2, 2025
3A
Jul 1, 2025 — Sep 30, 2025
3A
Jul 1, 2025 — Sep 30, 2025
3A
Jul 1, 2025 — Sep 30, 2025
+ 289 more resolved violations
Frequently Asked Questions
Is Mankato tap water safe to drink?
Mankato's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Mankato tap water?
1 contaminants have been detected in Mankato's water supply across 8 water systems. See the full contaminant table above for details.
How can I improve my water quality in Mankato?
Install a water filter rated for the specific contaminants found in Mankato's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Mankato have any water quality violations?
Yes, Mankato currently has 22 active violations. See the violations section above for details.