MT LEMMON DWID
Arizona — Community Water System — PWSID: AZ0410140
System Information
| PWSID | AZ0410140 |
| System Name | MT LEMMON DWID |
| 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 | 85730 |
| Address | 7431 E 42ND ST |
| Organization | DAVIS, NATHAN L |
| Phone | 520-576-1538 |
Population & Service
| Population Served | 290 |
| Service Connections | 344 |
Drinking Water Violations (260)
This water system has 260 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 2, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Mar 24, 2024 | — | Other | No | No | — | — | — | Resolved | Apr 5, 2023 | — | |
| Mar 24, 2024 | — | Other | No | No | — | — | — | Resolved | Apr 5, 2023 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Feb 1, 2023 | Feb 28, 2023 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2023 | — | |
| Feb 1, 2023 | Feb 28, 2023 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2023 | — | |
| Feb 1, 2023 | Feb 28, 2023 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2023 | — | |
| Feb 1, 2023 | Feb 28, 2023 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2023 | — | |
| Jan 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Oct 20, 2022 | — | |
| Jan 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Oct 20, 2022 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2023 | — | |
| May 1, 2022 | — | RPT | No | No | — | — | — | Resolved | Aug 24, 2022 | — | |
| May 1, 2022 | — | RPT | No | No | — | — | — | Resolved | Aug 24, 2022 | — | |
| Jul 1, 2021 | — | Other | No | No | — | — | — | Resolved | Jul 8, 2021 | — | |
| Jul 1, 2021 | — | Other | No | No | — | — | — | Resolved | Jul 8, 2021 | — | |
| Oct 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Oct 20, 2020 | — | |
| Oct 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Oct 20, 2020 | — | |
| Nov 3, 2017 | — | MR | No | No | — | TT | — | Resolved | Nov 17, 2017 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2016 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Oct 1, 2013 | — | Other | No | No | — | — | — | Resolved | May 1, 2014 | — | |
| Oct 1, 2013 | — | Other | No | No | — | — | — | Resolved | May 1, 2014 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jul 1, 2013 | — | Other | No | No | — | — | — | Resolved | May 1, 2014 | — | |
| Jul 1, 2013 | — | Other | No | No | — | — | — | Resolved | May 1, 2014 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2013 | — |
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.