TUCSON CITY OF
Arizona — Community Water System — PWSID: AZ0410112
System Information
| PWSID | AZ0410112 |
| System Name | TUCSON CITY OF |
| 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 | Oct 5, 1979 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | TUCSON |
| ZIP Code | 85726 |
| Address | — |
| Organization | AVILA, ALBERT C |
| Phone | 520-837-2430 |
Population & Service
| Population Served | 732,906 |
| Service Connections | 191,264 |
Drinking Water Violations (2,267)
This water system has 2,267 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | — | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0004 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0004 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.04 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.04 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.04 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0004 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | — | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | — | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | Dec 31, 2024 | MR | No | No | — | 0.0002 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| May 1, 2019 | Jul 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2019 | — | |
| May 1, 2019 | Jul 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2019 | — | |
| May 1, 2019 | Jul 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2019 | — | |
| May 1, 2019 | Jul 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | — | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | — | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 19, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 19, 2019 | — |
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.