ARIZONA WATER CO - TIERRA GRANDE

PHOENIX, AZ · ~1,796 people served

Check your exact address → PHOENIX overview

100

Excellent

PurityRadar safety score

PWSID

AZ0411076

State

Arizona

City

PHOENIX

Population served

1,796

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 Dec 2024. Official EPA record →

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved

Reporting · EPA contaminant 5200 began Oct 2024 Resolved

Reporting · Lead & Copper Rule began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2014 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2014 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2010 Resolved

Monitoring & reporting · Total coliform began Nov 2008 Resolved

Monitoring & reporting · Total coliform began Feb 2008 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2007 Resolved

Monitoring & reporting · Total coliform began Mar 2006 Resolved

Other · EPA contaminant 7000 began Jul 2002 Resolved

Recent enforcement actions

State action · SIF Dec 2024
State action · SIF Dec 2024
State action · SIE Nov 2024
State action · SIA Nov 2024
State action · SOX Nov 2024
State action · SIA Nov 2024
State action · SIE Nov 2024
State action · SIA Dec 2020

This profile is built from EPA public records for system AZ0411076 — 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.