Coal Mine Mesa NTUA

Fort Defiance, AZ · ~393 people served

Check your exact address → Fort Defiance overview

100

Excellent

PurityRadar safety score

PWSID

NN0400207

State

Arizona

City

Fort Defiance

Population served

393

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

117

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2021. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2020 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2020 Resolved

Monitoring & reporting · Selenium began Jan 2011 Resolved

Monitoring & reporting · Barium began Jan 2011 Resolved

Monitoring & reporting · Antimony began Jan 2011 Resolved

Monitoring & reporting · Cadmium began Jan 2011 Resolved

Monitoring & reporting · Chromium (total) began Jan 2011 Resolved

Monitoring & reporting · Beryllium began Jan 2011 Resolved

Monitoring & reporting · EPA contaminant 1075 began Jan 2011 Resolved

Monitoring & reporting · EPA contaminant 1085 began Jan 2011 Resolved

Monitoring & reporting · Arsenic began Jan 2011 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jan 2008 Resolved

Recent enforcement actions

State action · SOX Jul 2021
State action · SOX Jul 2021
State action · SFJ Apr 2021
State action · SFJ Apr 2021
State action · SFG Apr 2021
State action · SFG Apr 2021
State action · SOX Jun 2014
State action · SOX Jun 2014

This profile is built from EPA public records for system NN0400207 — 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.