Wonder Lake, Illinois Water Quality Report
Water quality data for 2 water systems serving 5,820 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (2)
52
Jul 1, 2025
52
Jul 1, 2025
Resolved Violations (498)
66
Apr 1, 2025
66
Apr 1, 2025
3A
Nov 1, 2024 — Nov 30, 2024
27
Nov 1, 2024 — Nov 30, 2024
27
Nov 1, 2024 — Nov 30, 2024
+ 493 more resolved violations
Frequently Asked Questions
Is Wonder Lake tap water safe to drink?
Wonder 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 Wonder Lake tap water?
0 contaminants have been detected in Wonder Lake's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Wonder Lake?
Install a water filter rated for the specific contaminants found in Wonder 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 Wonder Lake have any water quality violations?
Yes, Wonder Lake currently has 23 active violations. See the violations section above for details.