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Water system · PWSID AZ0404002

ARIZONA WATER CO - MIAMI CLAYPOOL

PHOENIX, AZ · ~8,656 people served

Check your exact address → PHOENIX overview
96
Excellent
PurityRadar safety score

PWSID

AZ0404002

State

Arizona

City

PHOENIX

Population served

8,656

Primary source

Groundwater

Score history

▼ 4 points — the score moved from 100 to 96 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 96

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 Oct 2025). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

7.8 ppt

limit 10 ppt

Near EPA limit

Lithium

150,000 ppt

limit —

No federal limit

PFBA

9.3 ppt

limit —

No federal limit

PFHxA

9.1 ppt

limit —

No federal limit

PFBS

4.8 ppt

limit —

No federal limit

PFPeA

4.4 ppt

limit —

No federal limit

PFPeS

4.2 ppt

limit —

No federal limit

Violations & enforcement

193

Violations on record

0

Unaddressed

1

Health-based

102

Enforcement actions

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

Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved
Monitoring & reporting · Nitrate began Apr 2012 Resolved
Monitoring & reporting · Nitrate began Jan 2010 Resolved
Monitoring & reporting · Nitrate began Jan 2010 Resolved
Other · EPA contaminant 7000 began Jul 2009 Resolved
Monitoring & reporting · Total coliform began Aug 2007 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2007 Resolved
Monitoring & reporting · Nitrate began Jul 2007 Resolved
Monitoring & reporting · Total coliform began Mar 2007 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved

Recent enforcement actions

  • State action · SIF Dec 2024
  • State action · SIF Dec 2024
  • State action · SOX Nov 2024
  • State action · SIA Nov 2024
  • State action · SIA Nov 2024
  • State action · SIE Nov 2024
  • State action · SIE Nov 2024
  • State action · SOX Jan 2016

This profile is built from EPA public records for system AZ0404002 — 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.