Ojo Encino North NTUA
PWS ID: NN3503041 · Ft Defiance, Navajo Nation 86504
Population Served
1,108
Total Violations
92
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 324
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 80
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 9 | 2012 |
| E. COLI | MR | 3 | 2011 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2013 |
| Arsenic | MR | 1 | 2008 |
| Barium | MR | 1 | 2008 |
| Cadmium | MR | 1 | 2008 |
| Chromium | MR | 1 | 2008 |
| CYANIDE | MR | 1 | 2008 |
| Fluoride | MR | 1 | 2008 |
| Nitrite | MR | 1 | 2010 |
| Selenium | MR | 1 | 2008 |
| Antimony, Total | MR | 1 | 2008 |
| Thallium, Total | MR | 1 | 2008 |
| Endrin | MR | 1 | 2008 |
| Methoxychlor | MR | 1 | 2008 |
| Endothall | MR | 1 | 2008 |
| Glyphosate | MR | 1 | 2008 |
| OXAMYL | MR | 1 | 2008 |
| Picloram | MR | 1 | 2008 |
| LASSO | MR | 1 | 2008 |
| Hexachlorocyclopentadiene | MR | 1 | 2008 |
| Atrazine | MR | 1 | 2008 |
| 2,3,7,8-TCDD | MR | 1 | 2008 |
| Heptachlor | MR | 1 | 2008 |
| 2,4-D | MR | 1 | 2008 |
| 2,4,5-TP | MR | 1 | 2008 |
| Benzo(a)pyrene | MR | 1 | 2008 |
| Pentachlorophenol | MR | 1 | 2008 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2008 |
| ETHYLENE DIBROMIDE | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.