TUCSON WATER CORONA DE TUCSON

TUCSON, AZ · ~10,217 people served

Check your exact address → TUCSON overview

100

Excellent

PurityRadar safety score

PWSID

AZ0410169

State

Arizona

City

TUCSON

Population served

10,217

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

Latest detections from EPA’s UCMR5 monitoring (through Jul 2024). Levels in parts per trillion (ppt).

Lithium

28,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2012. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Oct 2011 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2011 Resolved

Other · EPA contaminant 7000 began Jul 2008 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2006 Resolved

Monitoring & reporting · Total coliform began Sep 2006 Resolved

Other · EPA contaminant 7000 began Jul 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2006 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2006 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2006 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Apr 2012
State action · SOX Jul 2008
State action · SOX Apr 2008
State action · SOX Oct 2007
State action · SOX Apr 2007
State action · SOX Sep 2006
State action · SOX Dec 2005
State action · SOX Apr 2005

This profile is built from EPA public records for system AZ0410169 — 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.