Rock Springs Community - NTUA
Arizona — Community Water System — PWSID: 093500302
System Information
| PWSID | 093500302 |
| System Name | Rock Springs Community - 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 | Mar 25, 2026 |
Location & Contact
| State | Arizona |
| City | Fort Defiance |
| ZIP Code | 86504 |
| Address | P.O. Box 170 |
| Organization | NTUA |
| Phone | — |
Population & Service
| Population Served | 1,574 |
| Service Connections | 410 |
Drinking Water Violations (68)
This water system has 68 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, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2016 | Mar 31, 2016 | MR | No | Yes | — | 1 mg/L | — | Resolved | Mar 31, 2016 | — | |
| Jan 1, 2016 | Mar 31, 2016 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Mar 31, 2016 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jul 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 1 mg/L | — | Resolved | Jul 30, 2015 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 17, 2011 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | Yes | — | 1 mg/L | — | Resolved | Jun 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jun 30, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 1 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 1 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 1 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2008 | Dec 31, 2013 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2008 | Dec 31, 2013 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2013 | — | |
| Nov 1, 2004 | Nov 30, 2004 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2004 | — | |
| Jul 1, 2002 | — | Other | No | No | — | — | — | Resolved | Apr 13, 2007 | — | |
| May 1, 2002 | May 31, 2002 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2002 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2001 | — | |
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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.