DESERT OASIS
Arizona - Community Water System - PWSID: AZ0407523
System Information
| PWSID | AZ0407523 |
| System Name | DESERT OASIS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Sep 21, 2004 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | SURPRISE |
| ZIP Code | 85374 |
| Address | 16000 N. Civic Center Plaza |
| Organization | PEZZELLE, STEPHANIE R |
| Phone | 623-222-7030 |
Population & Service
| Population Served | 23,963 |
| Service Connections | 8,123 |
Drinking Water Violations (54)
This water system has 54 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 1, 2020 | Sep 30, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 2020 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Jan 2, 2019 | - | |
| Jan 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Jan 2, 2019 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Feb 1, 2015 | Feb 28, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2015 | - | |
| Feb 1, 2015 | Feb 28, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2015 | - | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2014 | - | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2012 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Oct 1, 2009 | Dec 31, 2009 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Oct 1, 2009 | Dec 31, 2009 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jul 1, 2009 | - | Other | No | No | - | - | - | Resolved | Jul 15, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2009 | - | |
| Oct 1, 2007 | Oct 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2007 | - | |
| Sep 1, 2007 | Sep 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2007 | - | |
| Aug 1, 2007 | Aug 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2007 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Dec 31, 2006 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Jul 1, 2005 | Jul 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2005 | - | |
| Jun 1, 2005 | Jun 30, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2005 | - | |
| May 1, 2005 | May 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2005 | - | |
| Apr 1, 2005 | Apr 30, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2005 | - | |
| Mar 1, 2005 | Mar 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2005 | - | |
| Feb 1, 2005 | Feb 28, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2005 | - | |
| Jan 1, 2005 | Jan 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2005 | - | |
| Jan 1, 2004 | Dec 31, 2007 | MR | No | No | - | 5 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2004 | Dec 31, 2007 | MR | No | No | - | 30 ug/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2004 | Dec 31, 2007 | MR | No | No | - | - | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2004 | Jan 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2007 | MR | No | No | - | 15 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Dec 1, 2003 | Dec 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2003 | - |
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.