Flagstaff, Arizona Water Quality Report
Water quality data for 15 water systems serving 94,061 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
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Compliance & Violations
Active Violations (31)
75
Aug 14, 2025
75
Jul 26, 2025
71
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
75
Feb 27, 2025
75
Feb 27, 2025
75
Jan 2, 2025
51
Jan 1, 2025
51
Jan 1, 2025
75
Dec 20, 2024
75
Dec 20, 2024
75
Dec 20, 2024
75
Dec 20, 2024
75
Nov 13, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
75
Oct 5, 2024
75
Jul 2, 2024
75
Jul 2, 2024
75
Apr 2, 2024
66
Apr 2, 2024
75
Jan 2, 2024
75
Jan 2, 2024
51
Jan 1, 2024
66
Jan 1, 2024
51
Jan 1, 2024
75
May 31, 2023
75
Nov 25, 2022
Resolved Violations (469)
4B
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
02
Jul 1, 2025 — Sep 30, 2025
+ 464 more resolved violations
Frequently Asked Questions
Is Flagstaff tap water safe to drink?
Flagstaff'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 Flagstaff tap water?
1 contaminants have been detected in Flagstaff's water supply across 15 water systems. See the full contaminant table above for details.
How can I improve my water quality in Flagstaff?
Install a water filter rated for the specific contaminants found in Flagstaff's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Flagstaff have any water quality violations?
Yes, Flagstaff currently has 284 active violations. See the violations section above for details.