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Water system · PWSID AZ0411009

ARIZONA WATER CO - PINAL VALLEY

PHOENIX, AZ · ~134,432 people served

Check your exact address → PHOENIX overview

Excellent

PurityRadar safety score

PWSID

AZ0411009

State

Arizona

City

PHOENIX

Population served

134,432

Primary source

Groundwater

Score history

▼ 1 point — the score moved from 100 to 99 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 99

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

PFHxS

Perfluorohexanesulfonic acid

6.1 ppt

limit 10 ppt

Near EPA limit

Lithium

351,000 ppt

limit —

No federal limit

PFBA

19 ppt

limit —

No federal limit

PFBS

18 ppt

limit —

No federal limit

PFHpA

9.4 ppt

limit —

No federal limit

PFPeA

4.3 ppt

limit —

No federal limit

PFHxA

3.7 ppt

limit —

No federal limit

Violations & enforcement

514

Violations on record

Unaddressed

Health-based

176

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began Aug 2025 Resolved

Monitoring & reporting · Arsenic began Apr 2025 Resolved

Reporting · Lead & Copper Rule began Oct 2020 Resolved

Monitoring & reporting · Arsenic began Jan 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved

Monitoring & reporting · Nitrate began Jan 2015 Resolved

Monitoring & reporting · Arsenic began Jan 2015 Resolved

Monitoring & reporting · EPA contaminant 2036 began Jan 2013 Resolved

Monitoring & reporting · EPA contaminant 2980 began Jan 2010 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 2010 Resolved

Recent enforcement actions

State action · SOX Dec 2025
State action · SIE Nov 2025
State action · SIE Sep 2025
State action · SIA Sep 2025
State action · SIE Sep 2025
State action · SIA Jul 2025
State action · SOX Jul 2025
State action · SIE Jun 2024

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

Arsenic

1 station · latest Apr 2023

0.0043 · max 0.0047 mg/L · 2

Copper

1 station · latest Apr 2023

0.009 · max 0.014 mg/L · 2

Fluoride

1 station · latest Apr 2023

0.82 · max 0.82 mg/L · 1

Lead

1 station · latest Apr 2023

0.0034 · max 0.0034 mg/L · 1

Manganese

1 station · latest Apr 2023

0.12 · max 0.12 mg/L · 1

Nitrate

1 station · latest Apr 2023

0.103 · max 0.103 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 AZ0411009 — 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.