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Water system · PWSID AZ0411021

ARIZONA WATER CO - SUPERIOR

PHOENIX, AZ · ~4,393 people served

Check your exact address → PHOENIX overview
100
Excellent
PurityRadar safety score

PWSID

AZ0411021

State

Arizona

City

PHOENIX

Population served

4,393

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

32,000 ppt

limit —

No federal limit

Violations & enforcement

96

Violations on record

0

Unaddressed

0

Health-based

101

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2016. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2013 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2007 Resolved
Monitoring & reporting · Total coliform began Sep 2004 Resolved
Other · EPA contaminant 7000 began Jul 2002 Resolved
Monitoring & reporting · Cadmium began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 1075 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 1075 began Oct 2001 Resolved
Monitoring & reporting · Cadmium began Oct 2001 Resolved
Monitoring & reporting · Cadmium began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 1075 began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 1075 began Apr 2001 Resolved

Recent enforcement actions

  • State action · SOX Jan 2016
  • State action · SOX Feb 2014
  • State action · SIA Dec 2013
  • State action · SOX Nov 2007
  • State action · SOX Dec 2006
  • State action · SOX Dec 2006
  • State action · SOX Dec 2006
  • State action · SOX Dec 2006

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Copper

7 stations · latest Jan 2026

0.017 · max 0.125 mg/L · 34

Lead

5 stations · latest Jan 2026

0.0016 · max 0.106 mg/L · 15

Arsenic

2 stations · latest Apr 2023

0.02 · max 0.022 mg/L · 8

Manganese

2 stations · latest Apr 2023

0.016 · max 0.068 mg/L · 8

Fluoride

1 station · latest Apr 2023

0.45 · max 0.45 mg/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system AZ0411021 — 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.