Coppermine NTUA
Arizona — Community Water System — PWSID: NN0400814
System Information
| PWSID | NN0400814 |
| System Name | Coppermine NTUA |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 1, 2005 |
| Last Reported | Dec 31, 2025 |
Location & Contact
| State | Arizona |
| City | Ft Defiance |
| ZIP Code | 86504 |
| Address | Office of Deputy General Manager |
| Organization | Navajo Tribal Utility Authority |
| Phone | 9287296277 |
Population & Service
| Population Served | 342 |
| Service Connections | 100 |
Drinking Water Violations (37)
This water system has 37 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 | Mar 31, 2022 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Feb 5, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Feb 5, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Feb 5, 2019 | — | |
| Jan 1, 2017 | — | Other | No | No | — | — | — | Resolved | Jun 29, 2017 | — | |
| Jan 1, 2017 | — | Other | No | No | — | — | — | Resolved | Jun 29, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2017 | — | |
| Oct 1, 2013 | — | MR | No | Yes | — | — | — | Resolved | Feb 23, 2023 | — | |
| Oct 1, 2013 | — | MR | No | Yes | — | — | — | Resolved | Feb 23, 2023 | — | |
| Oct 1, 2013 | — | MR | No | Yes | — | — | — | Resolved | Feb 23, 2023 | — | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2012 | — | |
| Nov 1, 2012 | Nov 30, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Mar 18, 2009 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Mar 18, 2009 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Mar 18, 2009 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | — | 30 ug/L | — | Resolved | Dec 31, 2010 | — | |
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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.