Lake Delton, Wisconsin Water Quality Report
Water quality data for 2 water systems serving 3,220 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (3)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (11)
72
Jul 1, 2025
72
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
24
Sep 1, 2003 — Sep 30, 2003
+ 6 more resolved violations
Frequently Asked Questions
Is Lake Delton tap water safe to drink?
Lake Delton'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 Lake Delton tap water?
0 contaminants have been detected in Lake Delton's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Lake Delton?
Install a water filter rated for the specific contaminants found in Lake Delton's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Lake Delton have any water quality violations?
Yes, Lake Delton currently has 3 active violations. See the violations section above for details.