Kitsillie-Black Mesa NTUA

Ft Defiance, AZ · ~414 people served

Check your exact address → Ft Defiance overview

100

Excellent

PurityRadar safety score

PWSID

NN0400253

State

Arizona

City

Ft Defiance

Population served

414

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 Feb 2025. Official EPA record →

Other · Lead & Copper Rule began Apr 2016 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

Max contaminant level (MCL) · Arsenic health-based began Oct 2010 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

Monitoring & reporting · EPA contaminant 2955 began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Feb 2025
State action · SFJ Aug 2024
State action · SOX Feb 2023
State action · SFG Aug 2017
State action · SFJ Aug 2017
State action · SOX Jan 2013
State action · SFJ Jan 2013
State action · SOX Dec 2012

This profile is built from EPA public records for system NN0400253 — 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.