Vernon Hills, Illinois Water Quality Report
Water quality data for 4 water systems serving 4,164 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (33)
4H
Jul 2, 2025
4H
Jul 2, 2025
72
Jul 1, 2025
72
Jul 1, 2025
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
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Unknown
Resolved Violations (261)
27
Jul 1, 2024 — Sep 30, 2024
27
Jul 1, 2024 — Sep 30, 2024
27
Jul 1, 2024 — Sep 30, 2024
27
Jul 1, 2024 — Sep 30, 2024
71
Jul 1, 2023
+ 256 more resolved violations
Frequently Asked Questions
Is Vernon Hills tap water safe to drink?
Vernon Hills'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 Vernon Hills tap water?
0 contaminants have been detected in Vernon Hills's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Vernon Hills?
Install a water filter rated for the specific contaminants found in Vernon Hills's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Vernon Hills have any water quality violations?
Yes, Vernon Hills currently has 33 active violations. See the violations section above for details.