St. Charles, Missouri Water Quality Report
Water quality data for 2 water systems serving 73,065 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 45.1 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 451% | Above guideline |
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Compliance & Violations
Active Violations (10)
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
Resolved Violations (7)
66
Oct 1, 2024
72
Jul 1, 2012
72
Jul 1, 2006
22
Apr 1, 2004 — Apr 30, 2004
22
Apr 1, 2004 — Apr 30, 2004
+ 2 more resolved violations
Frequently Asked Questions
Is St. Charles tap water safe to drink?
St. Charles's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in St. Charles tap water?
1 contaminants have been detected in St. Charles's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in St. Charles?
Install a water filter rated for the specific contaminants found in St. Charles's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does St. Charles have any water quality violations?
Yes, St. Charles currently has 10 active violations. See the violations section above for details.