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Water system · PWSID NN4903017

Red Mesa NTUA

Ft Defiance, AZ · ~1,023 people served

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

PWSID

NN4903017

State

Arizona

City

Ft Defiance

Population served

1,023

Primary source

SWP

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

55

Violations on record

4

Unaddressed

13

Health-based

108

Enforcement actions

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

Other · EPA contaminant 7500 began Jul 2024 Unaddressed
Other · EPA contaminant 7500 began Apr 2024 Unaddressed
Other · EPA contaminant 7500 began Jan 2024 Unaddressed
Other · EPA contaminant 7500 began Oct 2023 Unaddressed
Max contaminant level (MCL) · Arsenic health-based began Jul 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2023 Resolved
Monitoring & reporting · Arsenic began Jan 2022 Resolved
Monitoring & reporting · Arsenic began Jan 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2017 Resolved
Other · EPA contaminant 7500 began Jan 2017 Resolved

Recent enforcement actions

  • State action · SFJ Apr 2025
  • State action · SFJ Apr 2025
  • State action · SFJ Apr 2025
  • State action · SFJ Apr 2025
  • State action · SFJ Mar 2025
  • State action · SFJ Mar 2025
  • State action · SOX Mar 2025
  • State action · SFJ Mar 2025

This profile is built from EPA public records for system NN4903017 — 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.