Tuba City Boarding School BIA

Tuba City, AZ · ~2,040 people served

Check your exact address → Tuba City overview

100

Excellent

PurityRadar safety score

PWSID

NN0433001

State

Arizona

City

Tuba City

Population served

2,040

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Reporting · Lead & Copper Rule began Jan 2024 Resolved

Monitoring · Lead & Copper Rule began Oct 2023 Resolved

Monitoring · Lead & Copper Rule began Sep 2023 Resolved

Reporting · Lead & Copper Rule began Oct 2022 Resolved

Reporting · Lead & Copper Rule began May 2020 Resolved

Monitoring & reporting · Fluoride began Jan 2008 Resolved

Other · EPA contaminant 7000 began Jul 2006 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Monitoring & reporting · Total coliform began Nov 2004 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 2004 Resolved

Monitoring & reporting · Total coliform began Apr 2004 Resolved

Monitoring & reporting · Total coliform began Sep 2002 Resolved

Recent enforcement actions

State action · SOX Feb 2024
State action · SOX Nov 2023
State action · SOX Nov 2023
State action · SOX Nov 2022
State action · SOX Jun 2020
State action · SOX Feb 2013
State action · SIF Apr 2012
State action · SIA Mar 2012

This profile is built from EPA public records for system NN0433001 — 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.