Dzilth-Na-O-Dith-Hle NTUA
Arizona — Community Water System — PWSID: NN3503045
System Information
| PWSID | NN3503045 |
| System Name | Dzilth-Na-O-Dith-Hle NTUA |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 30, 2002 |
| 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 | 462 |
| Service Connections | 135 |
Drinking Water Violations (199)
This water system has 199 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2013 | — | Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | No | Yes | — | — | — | Unaddressed | — | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | — | Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | No | Yes | — | — | — | Unaddressed | — | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Dec 1, 2012 | Dec 31, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2012 | Total Coliform Rule |
| Dec 1, 2012 | Dec 31, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2012 | Total Coliform Rule |
| Nov 1, 2012 | Nov 30, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | Total Coliform Rule |
| Jan 1, 2011 | Dec 31, 2013 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Thallium, Total | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | 1,1-Dichloroethylene | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Xylenes, Total | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Diquat | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Apr 12, 2011 | Synthetic Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Xylenes, Total | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Xylenes, Total | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | o-Dichlorobenzene | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Thallium, Total | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | o-Dichlorobenzene | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | o-Dichlorobenzene | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | Volatile Organic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Thallium, Total | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Thallium, Total | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
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.