Lake Barrington, Illinois Water Quality Report
Water quality data for 2 water systems serving 2,800 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (12)
75
Aug 22, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (211)
27
Jul 1, 2007 — Sep 30, 2007
23
Jul 1, 2007 — Jul 31, 2007
23
Jul 1, 2007 — Jul 31, 2007
27
Jul 1, 2007 — Sep 30, 2007
03
Jan 1, 2007 — Mar 31, 2007
+ 206 more resolved violations
Frequently Asked Questions
Is Lake Barrington tap water safe to drink?
Lake Barrington'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 Barrington tap water?
0 contaminants have been detected in Lake Barrington's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Lake Barrington?
Install a water filter rated for the specific contaminants found in Lake Barrington'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 Barrington have any water quality violations?
Yes, Lake Barrington currently has 12 active violations. See the violations section above for details.