EPCOR - WILLOW VALLEY/KING STREET

EL MIRAGE, AZ · ~3,408 people served

Check your exact address → EL MIRAGE overview

100

Excellent

PurityRadar safety score

PWSID

AZ0408040

State

Arizona

City

EL MIRAGE

Population served

3,408

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 Nov 2023). Levels in parts per trillion (ppt).

Lithium

80,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed

Max contaminant level (MCL) · EPA contaminant 1009 health-based began Apr 2025 Resolved

Monitoring & reporting · EPA contaminant 1009 began Dec 2022 Resolved

Monitoring & reporting · EPA contaminant 1009 began Jun 2022 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2021 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved

Other · EPA contaminant 7000 began Jul 2015 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2013 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2012 Resolved

Recent enforcement actions

State action · SIF May 2025
State action · SOX May 2025
State action · SIE May 2025
State action · SIA May 2025
State action · SOX Feb 2023
State action · SIA Feb 2023
State action · SIA Aug 2022
State action · SOX Jul 2022

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 Sep 2025

0.001 · max 0.001 mg/L · 1

Manganese

1 station · latest Sep 2025

0.005 · max 0.005 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 AZ0408040 — 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.