Mount Prospect, Illinois Water Quality Report
Water quality data for 1 water system serving 41,000 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (18)
71
Jul 1, 2025
72
Jul 1, 2025
Violation
Unknown
Violation
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 (31)
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
03
Jul 1, 2024 — Sep 30, 2024
+ 26 more resolved violations
Frequently Asked Questions
Is Mount Prospect tap water safe to drink?
Mount Prospect'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 Mount Prospect tap water?
0 contaminants have been detected in Mount Prospect's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Mount Prospect?
Install a water filter rated for the specific contaminants found in Mount Prospect's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Mount Prospect have any water quality violations?
Yes, Mount Prospect currently has 18 active violations. See the violations section above for details.