COLDWATER CANYON 1
Arizona - Community Water System - PWSID: AZ0413020
System Information
| PWSID | AZ0413020 |
| System Name | COLDWATER CANYON 1 |
| 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 | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | TUCSON |
| ZIP Code | 85745 |
| Address | ATTN VERONICA WENE |
| Organization | COLDWATER CANYON WATER CO |
| Phone | 520-624-1460 |
Population & Service
| Population Served | 541 |
| Service Connections | 239 |
Drinking Water Violations (218)
This water system has 218 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2025 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .018 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .018 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .018 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .018 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2023 | - | |
| Nov 14, 2022 | - | Other | No | No | - | - | - | Resolved | Feb 16, 2023 | - | |
| Nov 14, 2022 | - | Other | No | No | - | - | - | Resolved | Feb 16, 2023 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .016 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Sep 1, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .016 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .016 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .016 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Sep 1, 2022 | - | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2022 | - | |
| Apr 1, 2022 | Jun 30, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2022 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Oct 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Oct 2, 2020 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Oct 2, 2020 | - | |
| Jul 1, 2019 | - | Other | No | No | - | - | - | Resolved | Jul 10, 2019 | - | |
| Jul 1, 2019 | - | Other | No | No | - | - | - | Resolved | Jul 10, 2019 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Oct 2, 2020 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Oct 2, 2020 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Nov 3, 2017 | - | MR | No | No | - | TT | - | Resolved | Apr 11, 2018 | - | |
| Nov 3, 2017 | - | MR | No | No | - | TT | - | Resolved | Apr 11, 2018 | - | |
| Oct 1, 2017 | Oct 31, 2017 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2017 | - | |
| Oct 1, 2017 | Oct 31, 2017 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2017 | - | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2016 | - |
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.