Heron Lake, Minnesota Water Quality Report
Water quality data for 1 water system serving 691 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (11)
4H
Jul 2, 2025
4H
Jul 2, 2025
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (12)
52
Oct 1, 2024
52
Oct 1, 2024
51
Jan 1, 1994
51
Jan 1, 1994
51
Jan 1, 1994
+ 7 more resolved violations
Frequently Asked Questions
Is Heron Lake tap water safe to drink?
Heron Lake's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Heron Lake tap water?
0 contaminants have been detected in Heron Lake's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Heron Lake?
Install a water filter rated for the specific contaminants found in Heron Lake's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Heron Lake have any water quality violations?
Yes, Heron Lake currently has 11 active violations. See the violations section above for details.