Des Plaines, Illinois Water Quality Report
Water quality data for 2 water systems serving 60,676 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (11)
72
Jul 1, 2025
52
Oct 1, 2024
52
Oct 1, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (6)
4H
Jul 2, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
71
Jul 1, 2018
71
Jul 1, 2018
+ 1 more resolved violations
Frequently Asked Questions
Is Des Plaines tap water safe to drink?
Des Plaines'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 Des Plaines tap water?
0 contaminants have been detected in Des Plaines's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Des Plaines?
Install a water filter rated for the specific contaminants found in Des Plaines's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Des Plaines have any water quality violations?
Yes, Des Plaines currently has 11 active violations. See the violations section above for details.