WATCO WATER
Arizona - Community Water System - PWSID: AZ0409049
System Information
| PWSID | AZ0409049 |
| System Name | WATCO WATER |
| 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 | Jun 13, 1997 |
| Last Reported | Mar 12, 2026 |
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 | 1,153 |
| Service Connections | 332 |
Drinking Water Violations (84)
This water system has 84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2025 | Nov 30, 2025 | MON | No | Yes | - | - | - | Archived | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MON | No | Yes | - | - | - | Archived | Nov 30, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 21, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 21, 2025 | - | |
| Jan 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Oct 2, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jan 22, 2025 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jan 22, 2025 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jan 22, 2025 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2023 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2023 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2023 | - | |
| Nov 6, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jan 17, 2023 | - | |
| Nov 6, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jan 17, 2023 | - | |
| Sep 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Nov 14, 2022 | - | |
| Sep 1, 2022 | - | RPT | No | No | - | - | - | Resolved | Nov 14, 2022 | - | |
| Oct 23, 2020 | - | MR | No | No | - | TT | - | Resolved | Nov 10, 2021 | - | |
| Oct 23, 2020 | - | MR | No | No | - | TT | - | Resolved | Nov 10, 2021 | - | |
| Oct 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Oct 16, 2020 | - | |
| Oct 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Oct 16, 2020 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2015 | - | |
| Sep 25, 2015 | - | MR | No | Yes | - | - | - | Resolved | Mar 1, 2016 | - | |
| Sep 25, 2015 | - | MR | No | Yes | - | - | - | Resolved | Mar 1, 2016 | - | |
| Sep 25, 2015 | - | MR | No | Yes | - | - | - | Resolved | Mar 1, 2016 | - | |
| Jul 1, 2015 | Jul 31, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2015 | - | |
| Jul 1, 2015 | Jul 31, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2015 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2014 | - | |
| Jul 1, 2014 | - | Other | No | No | - | - | - | Resolved | Jul 9, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| Apr 1, 2014 | Apr 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2014 | - | |
| Apr 1, 2014 | Apr 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2014 | - | |
| Mar 1, 2014 | Mar 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2014 | - | |
| Mar 1, 2014 | Mar 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2014 | - | |
| Oct 1, 2012 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2013 | - | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2011 | - | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2013 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Jul 1, 2011 | - | Other | No | No | - | - | - | Resolved | Jul 8, 2011 | - |
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.