Madison, Wisconsin Water Quality Report
Water quality data for 17 water systems serving 285,795 people.
Water Source
Detected Contaminants
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Connect with a certified water treatment professional in Madison, Wisconsin.
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Compliance & Violations
Active Violations (10)
4H
Jul 2, 2025
75
Oct 17, 2024
2E
Oct 17, 2024
76
Oct 17, 2024
75
Oct 17, 2024
75
Oct 17, 2024
75
Oct 17, 2024
75
Oct 17, 2024
76
Oct 17, 2024
66
Jan 1, 2024
Resolved Violations (490)
71
Jul 1, 2025
72
Jul 1, 2025
72
Jul 1, 2025
71
Jul 1, 2025
66
Jan 1, 2025
+ 485 more resolved violations
Frequently Asked Questions
Is Madison tap water safe to drink?
Madison's water meets all EPA maximum contaminant levels. However, 2 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Madison tap water?
2 contaminants have been detected in Madison's water supply across 17 water systems. See the full contaminant table above for details.
How can I improve my water quality in Madison?
Install a water filter rated for the specific contaminants found in Madison's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Madison have any water quality violations?
Yes, Madison currently has 44 active violations. See the violations section above for details.