TUCSON CITY OF
- 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 | May 14, 2026 |
Location & Contact
| State | |
| City | - |
| ZIP Code | - |
| Address | - |
| Organization | - |
| Phone | - |
Population & Service
| Population Served | 732,906 |
| Service Connections | 191,264 |
Drinking Water Violations (2,299)
This water system has 2,299 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, 2026 | Mar 31, 2026 | MR | No | Yes | - | - | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 30 ug/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.075 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 10 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 5 pCi/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 15 pCi/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.007 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 1 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.6 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.7 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | - | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| 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 | - | - | - | 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 | - | 0.0002 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 | - | 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 | - | 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 | - | 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 | - | - | - | 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 | - | 0.0004 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 | - | 0.04 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 | - | 0.04 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 | - |
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.