Fort Collins, Colorado Water Quality Report
Water quality data for 12 water systems serving 304,802 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (9)
75
Oct 3, 2025
66
Oct 1, 2025
66
Oct 1, 2025
5A
Aug 13, 2025
5A
Aug 13, 2025
4G
Jul 2, 2025
4G
Jul 2, 2025
2E
Jul 2, 2025
2E
Jul 2, 2025
Resolved Violations (491)
66
Oct 1, 2025
66
Oct 1, 2025
66
Oct 1, 2025
3A
Aug 1, 2025 — Aug 31, 2025
36
Aug 1, 2025 — Aug 31, 2025
+ 486 more resolved violations
Frequently Asked Questions
Is Fort Collins tap water safe to drink?
Fort Collins'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 Fort Collins tap water?
0 contaminants have been detected in Fort Collins's water supply across 12 water systems. See the full contaminant table above for details.
How can I improve my water quality in Fort Collins?
Install a water filter rated for the specific contaminants found in Fort Collins's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Fort Collins have any water quality violations?
Yes, Fort Collins currently has 23 active violations. See the violations section above for details.