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Water system · PWSID NN0400399

Sweetwater NTUA

Ft Defiance, AZ · ~2,014 people served

Check your exact address → Ft Defiance overview
100
Excellent
PurityRadar safety score

PWSID

NN0400399

State

Arizona

City

Ft Defiance

Population served

2,014

Primary source

SWP

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

84

Violations on record

2

Unaddressed

17

Health-based

154

Enforcement actions

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

Other · EPA contaminant 7500 began Apr 2024 Unaddressed
Other · EPA contaminant 7500 began Jan 2024 Unaddressed
Max contaminant level (MCL) · Arsenic health-based began Apr 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2024 Resolved
Other · EPA contaminant 7500 began Oct 2023 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2023 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2023 Resolved
Monitoring & reporting · Arsenic began Jan 2022 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2021 Resolved
Other · EPA contaminant 7500 began Jan 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2020 Resolved
Other · EPA contaminant 7500 began Oct 2020 Resolved

Recent enforcement actions

  • State action · SOX Mar 2025
  • State action · SFJ Mar 2025
  • State action · SOX Nov 2024
  • State action · SOX Nov 2024
  • State action · SOX Nov 2024
  • State action · SOX Nov 2024
  • State action · SFJ Aug 2024
  • State action · SFJ Aug 2024

This profile is built from EPA public records for system NN0400399 — 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.