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Water system · PWSID NN4903018

Montezuma Creek NTUA

Ft Defiance, AZ · ~424 people served

Check your exact address → Ft Defiance overview
100
Excellent
PurityRadar safety score

PWSID

NN4903018

State

Arizona

City

Ft Defiance

Population served

424

Primary source

Groundwater

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

46

Violations on record

0

Unaddressed

14

Health-based

130

Enforcement actions

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

Monitoring & reporting · Arsenic began Jan 2022 Resolved
Monitoring & reporting · Arsenic began Oct 2021 Resolved
Monitoring & reporting · Arsenic began Apr 2021 Resolved
Monitoring & reporting · Arsenic began Apr 2019 Resolved
Monitoring & reporting · Arsenic began Jan 2019 Resolved
Other · Lead & Copper Rule began Apr 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2015 Resolved
Monitoring & reporting · Total coliform began Aug 2015 Resolved
Other · EPA contaminant 7500 began Jul 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2015 Resolved
Monitoring & reporting · Arsenic began Apr 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2015 Resolved

Recent enforcement actions

  • State action · SOX Mar 2025
  • State action · SFJ Aug 2024
  • State action · SOX Feb 2023
  • State action · SOX Sep 2022
  • State action · SOX Sep 2022
  • State action · SOX Jul 2021
  • State action · SOX Feb 2019
  • State action · SOX Feb 2019

This profile is built from EPA public records for system NN4903018 — 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.