Rough Rock NTUA
Arizona - Community Water System - PWSID: NN0400396
System Information
| PWSID | NN0400396 |
| System Name | Rough Rock 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 | Feb 2, 1984 |
| 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 | 455 |
| Service Connections | 133 |
Drinking Water Violations (44)
This water system has 44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | Feb 10, 2025 | - | |
| Apr 1, 2016 | - | Other | No | No | - | - | - | Resolved | Feb 10, 2025 | - | |
| Oct 1, 2013 | - | MR | No | Yes | - | - | - | Resolved | Jul 18, 2022 | - | |
| Oct 1, 2013 | - | MR | No | Yes | - | - | - | Resolved | Jul 18, 2022 | - | |
| Oct 1, 2013 | - | MR | No | Yes | - | - | - | Resolved | Jul 18, 2022 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| 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, 2011 | - | MR | No | No | - | TT | - | Resolved | Jun 18, 2014 | - | |
| Jan 1, 2011 | - | MR | No | No | - | TT | - | Resolved | Jun 18, 2014 | - | |
| Jan 1, 2011 | - | MR | No | No | - | TT | - | Resolved | Jun 18, 2014 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2009 | - | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2009 | - | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2009 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/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 | - | 0.6 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 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 | - | 30 ug/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2005 | Dec 31, 2010 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.