EPCOR - WILLOW VALLEY/KING STREET
Arizona — Community Water System — PWSID: AZ0408040
System Information
| PWSID | AZ0408040 |
| System Name | EPCOR - WILLOW VALLEY/KING STREET |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Oct 5, 1979 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | EL MIRAGE |
| ZIP Code | 85335 |
| Address | — |
| Organization | DIDOMIZIO, TOM |
| Phone | 623-445-2431 |
Population & Service
| Population Served | 3,408 |
| Service Connections | 1,421 |
Drinking Water Violations (123)
This water system has 123 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 2, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Apr 1, 2025 | Apr 30, 2025 | MCL | Yes | No | — | 1.0 mg/L | — | Resolved | Apr 30, 2025 | — | |
| Apr 1, 2025 | Apr 30, 2025 | MCL | Yes | No | — | 1.0 mg/L | — | Resolved | Apr 30, 2025 | — | |
| Apr 1, 2025 | Apr 30, 2025 | MCL | Yes | No | — | 1.0 mg/L | — | Resolved | Apr 30, 2025 | — | |
| Apr 1, 2025 | Apr 30, 2025 | MCL | Yes | No | — | 1.0 mg/L | — | Resolved | Apr 30, 2025 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jun 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Jun 30, 2022 | — | |
| Jun 1, 2022 | Jun 30, 2022 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Jun 30, 2022 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2021 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Jul 1, 2015 | — | Other | No | No | — | — | — | Resolved | Jul 24, 2015 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jan 1, 2012 | Mar 31, 2012 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2012 | — | |
| Oct 1, 2011 | — | Other | No | No | — | — | — | Resolved | Oct 11, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2010 | — | |
| Jul 1, 2009 | — | Other | No | No | — | — | — | Resolved | Jul 14, 2009 | — | |
| Jul 1, 2007 | — | Other | No | No | — | — | — | Resolved | Aug 29, 2007 | — | |
| May 1, 2007 | May 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Oct 1, 2006 | Oct 31, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2006 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Aug 1, 2006 | Aug 31, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2006 | — | |
| Jul 1, 2006 | — | Other | No | No | — | — | — | Resolved | Aug 17, 2006 | — | |
| Jul 1, 2006 | Sep 30, 2006 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2006 | — | |
| May 1, 2006 | May 31, 2006 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2006 | — | |
| Apr 1, 2006 | Apr 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | — | |
| Apr 1, 2006 | Jun 30, 2006 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2006 | — | |
| Mar 1, 2006 | Mar 31, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2006 | — | |
| Feb 1, 2006 | Feb 28, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2006 | — | |
| Jan 1, 2006 | Mar 31, 2006 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Nov 1, 2005 | Nov 30, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2005 | — | |
| Oct 1, 2005 | Oct 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2005 | — | |
| Oct 1, 2005 | Dec 31, 2005 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2005 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.