Crystal Lake, Illinois Water Quality Report
Water quality data for 2 water systems serving 40,661 people.
Water Source
Detected Contaminants
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Connect with a certified water treatment professional in Crystal Lake, Illinois.
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Compliance & Violations
Active Violations (50)
58
Jan 1, 2005
58
Jan 1, 2005
58
Jan 1, 2005
58
Jan 1, 2005
58
Jan 1, 2005
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Resolved Violations (77)
23
Jul 1, 2005 — Jul 31, 2005
23
Jul 1, 2005 — Jul 31, 2005
75
Apr 24, 2005
75
Apr 24, 2005
76
Apr 8, 2005
+ 72 more resolved violations
Frequently Asked Questions
Is Crystal Lake tap water safe to drink?
Crystal Lake's water meets all EPA maximum contaminant levels. However, 2 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Crystal Lake tap water?
2 contaminants have been detected in Crystal Lake's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Crystal Lake?
Install a water filter rated for the specific contaminants found in Crystal 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 Crystal Lake have any water quality violations?
Yes, Crystal Lake currently has 50 active violations. See the violations section above for details.