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Water system · PWSID 090400104

Upper Moenkopi

Tuba City, AZ · ~1,740 people served

Check your exact address → Tuba City overview
100
Excellent
PurityRadar safety score

PWSID

090400104

State

Arizona

City

Tuba City

Population served

1,740

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

308

Violations on record

0

Unaddressed

8

Health-based

360

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2017. Official EPA record →

Monitoring & reporting · EPA contaminant 2991 began Jan 2016 Resolved
Monitoring & reporting · Total coliform began Aug 2015 Resolved
Monitoring & reporting · EPA contaminant 2991 began Jul 2015 Resolved
Monitoring & reporting · Beta/photon emitters began Jul 2015 Resolved
Monitoring & reporting · Total coliform began Jun 2015 Resolved
Monitoring & reporting · Total coliform began Apr 2015 Resolved
Monitoring & reporting · Total coliform began Mar 2015 Resolved
Monitoring & reporting · Total coliform began Jan 2015 Resolved
Monitoring & reporting · Beta/photon emitters began Jan 2015 Resolved
Monitoring & reporting · EPA contaminant 2991 began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Apr 2017
  • EPA/federal action · EOX Nov 2016
  • EPA/federal action · EOX Nov 2016
  • EPA/federal action · EOX May 2016
  • EPA/federal action · EOX Jan 2016
  • EPA/federal action · EOX Jan 2016
  • EPA/federal action · EOX Jan 2016
  • EPA/federal action · EOX Jan 2016

This profile is built from EPA public records for system 090400104 — 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.