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Water system · PWSID NN0403001

Ganado-Burnside-Cornfield-Steamboat NTUA

Ft Defiance, AZ · ~3,947 people served

Check your exact address → Ft Defiance overview
98
Excellent
PurityRadar safety score

PWSID

NN0403001

State

Arizona

City

Ft Defiance

Population served

3,947

Primary source

Groundwater

Score history

▼ 2 points — the score moved from 100 to 98 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 98

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 Dec 2024). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

6.1 ppt

limit 10 ppt

Near EPA limit

Lithium

230,000 ppt

limit —

No federal limit

PFHxA

4 ppt

limit —

No federal limit

PFPeA

3.6 ppt

limit —

No federal limit

Violations & enforcement

77

Violations on record

1

Unaddressed

4

Health-based

182

Enforcement actions

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

Other · EPA contaminant 7500 began Oct 2023 Unaddressed
Monitoring · Lead & Copper Rule began Oct 2023 Resolved
Monitoring · Lead & Copper Rule began Jun 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2020 Resolved
Monitoring · Lead & Copper Rule began Jun 2019 Resolved
Other · EPA contaminant 7500 began Jun 2019 Resolved
Treatment technique · Lead & Copper Rule health-based began Aug 2016 Resolved
Monitoring & reporting · EPA contaminant 3014 began Aug 2016 Resolved
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

Recent enforcement actions

  • State action · SFJ Aug 2024
  • State action · SFJ Aug 2024
  • State action · SOX Nov 2023
  • State action · SOX Feb 2022
  • State action · SOX Jul 2021
  • State action · SOX Jul 2021
  • State action · SOX Jul 2021
  • State action · SFG Mar 2021

This profile is built from EPA public records for system NN0403001 — 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.