Westminster, Colorado Water Quality Report
Water quality data for 4 water systems serving 203,655 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 21.3 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 213% | Above guideline |
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Compliance & Violations
Active Violations (5)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (237)
36
May 1, 2025 — May 31, 2025
36
May 1, 2025 — May 31, 2025
36
May 1, 2025 — May 31, 2025
27
Apr 1, 2025 — Jun 30, 2025
27
Apr 1, 2025 — Jun 30, 2025
+ 232 more resolved violations
Frequently Asked Questions
Is Westminster tap water safe to drink?
Westminster'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 Westminster tap water?
1 contaminants have been detected in Westminster's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Westminster?
Install a water filter rated for the specific contaminants found in Westminster's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Westminster have any water quality violations?
Yes, Westminster currently has 5 active violations. See the violations section above for details.