June 14, 2026
Flagstaff, AZ Water Quality Report 2026
Water Utility: City of Flagstaff
Population Served: 76,960 residents
Data Sources: EPA SDWIS + EPA UCMR5
Report Year: 2026
Flagstaff, Arizona drinking water is supplied by City of Flagstaff. This report summarizes health-based violations and PFAS detections from federal EPA databases.
EPA Health-Based Violation History
The following contaminants exceeded EPA MCLs at this utility since 2010:
| Contaminant | Violation Years | Filter Solution |
|---|---|---|
| Total Haloacetic Acids (HAA5) | 2015 | Whole House Filters |
Source: EPA SDWIS, updated quarterly. Health-based violations only.
PFAS "Forever Chemical" Detections
PFAS compounds were detected during EPA UCMR5 testing (2023-2025).
| PFAS Compound | Level Detected | Solution |
|---|---|---|
| PFBA | 0.0061 ug/L | PFAS Filters |
Source: EPA UCMR5. Levels in ug/L. 1 ug/L = 1,000 ppt.
Should You Filter Your Flagstaff Water?
Flagstaff had a haloacetic acid violation in 2015 and PFAS has been detected recently. Filtration is recommended for all households.
Protect Your Flagstaff Home Water
PureWaterGuys.com carries whole-house and under-sink systems that address haloacetic acids and PFAS. We ship to all Arizona addresses.
Shop Whole House Filters →Take the Water QuizFAQ
Is Flagstaff tap water safe to drink?
City of Flagstaff meets current EPA standards but had a haloacetic acid (HAA5) violation in 2015, and PFBA was detected in UCMR5 testing.
Does Flagstaff water have PFAS?
PFBA was detected during EPA UCMR5 monitoring. A whole-house carbon block or reverse osmosis system is recommended.
What filter works best for Flagstaff?
A whole-house carbon block filter addresses haloacetic acids and chlorine. For PFAS, a reverse osmosis system provides the highest reduction. Take our quiz.
Data sourced from EPA SDWIS and UCMR5. PureWaterGuys.com is not affiliated with any municipal water utility.
Filters for Flagstaff, AZ Water Issues
Based on contaminants detected in this report, these systems are worth considering:
NSF-certified filters proven to remove PFAS, PFOA, PFOS, and 200+ contaminants.
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Whole-house carbon filters that eliminate chlorine taste, odor, and DBPs.
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