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Water system · PWSID AZ0403008

FLAGSTAFF CITY OF

FLAGSTAFF, AZ · ~76,960 people served

Check your exact address → FLAGSTAFF overview
100
Excellent
PurityRadar safety score

PWSID

AZ0403008

State

Arizona

City

FLAGSTAFF

Population served

76,960

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Aug 2024). Levels in parts per trillion (ppt).

PFBA

6.1 ppt

limit —

No federal limit

Violations & enforcement

747

Violations on record

0

Unaddressed

5

Health-based

218

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2025. Official EPA record →

Reporting · Lead & Copper Rule began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 0200 began Jun 2025 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2024 Resolved
Monitoring & reporting · EPA contaminant 1009 began Jul 2023 Resolved
Monitoring & reporting · Bromate began Apr 2023 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jan 2023 Resolved

Recent enforcement actions

  • State action · SIA Aug 2025
  • State action · SOX Aug 2025
  • State action · SOX Jul 2025
  • State action · SIA Jul 2025
  • State action · SOX Jan 2025
  • State action · SIA Jan 2025
  • State action · SOX Aug 2024
  • State action · SOX Jun 2024

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Arsenic

1 station · latest Oct 2024

0.00039 · max 0.00046 mg/L · 2

Manganese

1 station · latest Oct 2024

0.3 · max 0.3 mg/L · 2

Copper

1 station · latest Oct 2024

0.0016 · max 0.0016 mg/L · 1

Fluoride

1 station · latest Oct 2024

0.14 · max 0.14 mg/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system AZ0403008 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.