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Water system · PWSID 090400393

Lower Moencopi - Spring Source

Tuba City, AZ · ~465 people served

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

PWSID

090400393

State

Arizona

City

Tuba City

Population served

465

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

290

Violations on record

3

Unaddressed

54

Health-based

344

Enforcement actions

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

Monitoring & reporting · EPA contaminant 3014 began Dec 2025 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jan 2023 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Jul 2023 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2023 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2023 Resolved
Other · EPA contaminant 7500 began Jul 2023 Resolved
Other · EPA contaminant 7500 began Jul 2023 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2023 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2023 Resolved
Other · EPA contaminant 7500 began Jul 2023 Resolved
Other · EPA contaminant 7500 began Jul 2023 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Aug 2024
  • EPA/federal action · EOX Aug 2024
  • EPA/federal action · EO7 Dec 2023
  • EPA/federal action · EO7 Dec 2023
  • EPA/federal action · EOX Dec 2022
  • EPA/federal action · EOX Jul 2019
  • EPA/federal action · EOX Jul 2019
  • EPA/federal action · EOX Jul 2019

This profile is built from EPA public records for system 090400393 — 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.