Crownpoint-Littlewater-Three Mile Point NTUA

Ft Defiance, AZ · ~3,950 people served

Check your exact address → Ft Defiance overview

100

Excellent

PurityRadar safety score

PWSID

NN3503039

State

Arizona

City

Ft Defiance

Population served

3,950

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

Latest detections from EPA’s UCMR5 monitoring (through Jul 2024). Levels in parts per trillion (ppt).

Lithium

41,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →

Other · Lead & Copper Rule began Apr 2016 Unaddressed

Max contaminant level (MCL) · Total coliform health-based began Aug 2013 Resolved

Monitoring & reporting · Total coliform began Dec 2012 Resolved

Monitoring & reporting · Total coliform began Nov 2012 Resolved

Monitoring & reporting · Fluoride began Jan 2008 Resolved

Monitoring & reporting · Selenium began Jan 2008 Resolved

Monitoring & reporting · Cadmium began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 1075 began Jan 2008 Resolved

Monitoring & reporting · Cyanide began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 1085 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2005 began Jan 2008 Resolved

Monitoring & reporting · Beryllium began Jan 2008 Resolved

Recent enforcement actions

State action · SFJ Aug 2024
State action · SOX Oct 2022
State action · SFG Mar 2021
State action · SFJ Mar 2021
State action · SOX Sep 2013
State action · SFJ Jan 2013
State action · SOX Jan 2013
State action · SOX Dec 2012

This profile is built from EPA public records for system NN3503039 — 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.