Grantsburg, Wisconsin Water Quality Report
Water quality data for 2 water systems serving 1,575 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (4)
75
Jan 1, 2010
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (18)
4H
Jul 2, 2025
76
Aug 24, 2022
76
Aug 24, 2022
76
Aug 24, 2022
76
Aug 24, 2022
+ 13 more resolved violations
Frequently Asked Questions
Is Grantsburg tap water safe to drink?
Grantsburg'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 Grantsburg tap water?
0 contaminants have been detected in Grantsburg's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Grantsburg?
Install a water filter rated for the specific contaminants found in Grantsburg's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Grantsburg have any water quality violations?
Yes, Grantsburg currently has 4 active violations. See the violations section above for details.