Baca-Haystack NTUA
Arizona — Community Water System — PWSID: NN3500254
System Information
| PWSID | NN3500254 |
| System Name | Baca-Haystack 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 | 376 |
| Service Connections | 110 |
Drinking Water Violations (145)
This water system has 145 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 | — | — | — | Unaddressed | — | — | |
| Apr 1, 2016 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 1, 2013 | — | MR | No | Yes | — | — | — | Resolved | Jul 16, 2019 | — | |
| Oct 1, 2013 | — | MR | No | Yes | — | — | — | Resolved | Jul 16, 2019 | — | |
| Oct 1, 2013 | — | MR | No | Yes | — | — | — | Resolved | Jul 16, 2019 | — | |
| 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 | Dec 31, 2013 | MR | No | Yes | — | 4.0 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, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jun 1, 2010 | Jun 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jul 1, 2009 | — | Other | No | No | — | — | — | Resolved | Jan 25, 2011 | — | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2009 | — | |
| Dec 1, 2008 | Dec 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2008 | — | |
| Nov 1, 2008 | Nov 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.1 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 | — | 0.00005 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Mar 15, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Mar 15, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.002 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 | — | 0.0002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Mar 15, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2007 | — |
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.