A PETERSEN WATER COMPANY
Arizona — Community Water System — PWSID: AZ0409032
System Information
| PWSID | AZ0409032 |
| System Name | A PETERSEN WATER COMPANY |
| 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 | Nov 17, 2025 |
Location & Contact
| State | Arizona |
| City | TUCSON |
| ZIP Code | 85754 |
| Address | PO BOX 85160 |
| Organization | SOUTHWESTERN UTILITY MGMT INC |
| Phone | 520-623-5172 |
Population & Service
| Population Served | 160 |
| Service Connections | 55 |
Drinking Water Violations (93)
This water system has 93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2025 | Sep 30, 2025 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Archived | Sep 30, 2025 | Revised Total Coliform Rule |
| Aug 1, 2025 | Aug 31, 2025 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Archived | Aug 31, 2025 | Revised Total Coliform Rule |
| Jun 1, 2023 | Jun 30, 2023 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2023 | Revised Total Coliform Rule |
| Jun 1, 2023 | Jun 30, 2023 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2023 | Revised Total Coliform Rule |
| Jun 1, 2023 | Jun 30, 2023 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2023 | Revised Total Coliform Rule |
| Oct 23, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 10, 2020 | Lead and Copper Rule |
| Oct 23, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 10, 2020 | Lead and Copper Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Oct 16, 2020 | Lead and Copper Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Oct 16, 2020 | Lead and Copper Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 30, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 30, 2020 | Consumer Confidence Rule |
| Apr 1, 2015 | Apr 30, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2015 | Total Coliform Rule |
| Apr 1, 2015 | Apr 30, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2015 | Total Coliform Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 8, 2014 | Consumer Confidence Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2014 | Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2014 | Total Coliform Rule |
| Mar 1, 2014 | Mar 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2014 | Total Coliform Rule |
| Mar 1, 2014 | Mar 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2014 | Total Coliform Rule |
| Nov 1, 2012 | Nov 30, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | Total Coliform Rule |
| Nov 1, 2012 | Nov 30, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | Total Coliform Rule |
| Oct 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 1, 2013 | Consumer Confidence Rule |
| Oct 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 1, 2013 | Consumer Confidence Rule |
| Jul 1, 2011 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 8, 2011 | Consumer Confidence Rule |
| Oct 1, 2010 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 8, 2011 | Consumer Confidence Rule |
| Oct 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 27, 2011 | Lead and Copper Rule |
| Oct 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 27, 2011 | Lead and Copper Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2009 | Total Coliform Rule |
| Jul 1, 2009 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 2, 2010 | Consumer Confidence Rule |
| Jul 1, 2008 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 15, 2008 | Consumer Confidence Rule |
| Aug 1, 2007 | Aug 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2007 | Total Coliform Rule |
| Jul 1, 2007 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 9, 2007 | Consumer Confidence Rule |
| Jun 1, 2007 | Jun 30, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2007 | Total Coliform Rule |
| Jan 1, 2007 | Jan 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2007 | Total Coliform Rule |
| Oct 1, 2006 | Oct 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2006 | Total Coliform Rule |
| Aug 1, 2006 | Aug 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2006 | Total Coliform Rule |
| Jul 1, 2006 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Oct 9, 2007 | Lead and Copper Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 9, 2007 | Consumer Confidence Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 9, 2007 | Consumer Confidence Rule |
| Aug 1, 2005 | Aug 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 25, 2005 | Consumer Confidence Rule |
| Jul 1, 2005 | Jul 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | Total Coliform Rule |
| Jun 1, 2005 | Jun 30, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2005 | Total Coliform Rule |
| May 1, 2005 | May 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2005 | Total Coliform Rule |
| Feb 1, 2005 | Feb 28, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2005 | Total Coliform Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Jan 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2005 | Total Coliform Rule |
| Jul 1, 2004 | Jul 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2004 | Total Coliform Rule |
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.