Newcomb NTUA

Ft Defiance, AZ · ~602 people served

Check your exact address → Ft Defiance overview

100

Excellent

PurityRadar safety score

PWSID

NN3503016

State

Arizona

City

Ft Defiance

Population served

602

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

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

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

Monitoring & reporting · EPA contaminant 0600 began Oct 2013 Resolved

Monitoring & reporting · Total coliform began Dec 2012 Resolved

Monitoring & reporting · Total coliform began Nov 2012 Resolved

Monitoring & reporting · Fluoride began Jan 2011 Resolved

Monitoring & reporting · Nitrite began Jan 2010 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2980 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2979 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Oct 2025
State action · SFJ Apr 2025
State action · SFJ Apr 2025
State action · SOX Jul 2021
State action · SOX Jul 2021
State action · SFJ Mar 2021
State action · SFJ Mar 2021
State action · SFG Mar 2021

This profile is built from EPA public records for system NN3503016 — 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.