TONTO BASIN SCHOOL DISTRICT 33
Arizona - Non-Transient Non-Community - PWSID: AZ0404055
System Information
| PWSID | AZ0404055 |
| System Name | TONTO BASIN SCHOOL DISTRICT 33 |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Sep 27, 1990 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | TONTO BASIN |
| ZIP Code | 85553 |
| Address | 445 S. OLD HWY 188 |
| Organization | WARREN, BOBBIE |
| Phone | 928-479-2277 |
Population & Service
| Population Served | 90 |
| Service Connections | 1 |
Drinking Water Violations (198)
This water system has 198 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 9, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Sep 5, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| May 22, 2025 | - | TT | Yes | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| May 22, 2025 | - | TT | Yes | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| May 22, 2025 | - | TT | Yes | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| Dec 20, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Dec 20, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Feb 23, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Feb 23, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Feb 23, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Feb 23, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Feb 23, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Feb 23, 2025 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Nov 17, 2023 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Nov 17, 2023 | - | |
| Jul 28, 2023 | - | TT | Yes | No | - | - | - | Resolved | Dec 15, 2023 | - | |
| Jul 28, 2023 | - | TT | Yes | No | - | - | - | Resolved | Dec 15, 2023 | - | |
| Jul 28, 2023 | - | TT | Yes | No | - | - | - | Resolved | Dec 15, 2023 | - | |
| Jul 28, 2023 | - | TT | Yes | No | - | - | - | Resolved | Dec 15, 2023 | - | |
| Jul 13, 2023 | - | MR | No | Yes | - | - | - | Resolved | Aug 23, 2023 | - | |
| Jul 13, 2023 | - | MR | No | Yes | - | - | - | Resolved | Aug 23, 2023 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 19, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 19, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 19, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 19, 2025 | - | |
| Nov 22, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jan 13, 2023 | - | |
| Nov 22, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jan 13, 2023 | - | |
| Nov 22, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jan 13, 2023 | - | |
| Nov 22, 2022 | - | TT | Yes | No | - | - | - | Resolved | Jan 13, 2023 | - | |
| Nov 5, 2022 | - | MR | No | Yes | - | - | - | Resolved | Jan 27, 2023 | - | |
| Nov 5, 2022 | - | MR | No | Yes | - | - | - | Resolved | Jan 27, 2023 | - | |
| Nov 5, 2022 | - | MR | No | Yes | - | - | - | Resolved | Jan 27, 2023 | - | |
| Nov 5, 2022 | - | MR | No | Yes | - | - | - | Resolved | Jan 27, 2023 | - | |
| Feb 26, 2021 | - | Other | No | No | - | - | - | Resolved | May 4, 2023 | - | |
| Feb 26, 2021 | - | Other | No | No | - | - | - | Resolved | May 4, 2023 | - | |
| Jan 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Nov 2, 2020 | - | |
| Jan 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Nov 2, 2020 | - | |
| Sep 1, 2020 | - | RPT | No | No | - | - | - | Resolved | Nov 25, 2020 | - | |
| Sep 1, 2020 | - | RPT | No | No | - | - | - | Resolved | Nov 25, 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 | - | |
| 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 | - | |
| Feb 1, 2009 | Feb 28, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2009 | - | |
| Feb 1, 2009 | Feb 28, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2009 | - | |
| Dec 1, 2008 | Dec 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2008 | - | |
| Dec 1, 2008 | Dec 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2008 | - |
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.