LeChee NTUA
PWS ID: NN0403006 · Ft Defiance, Navajo Nation 86504
Population Served
1,115
Total Violations
108
Health-Based Violations
9
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 326
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 84
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 9 | 2010 |
| TTHM | MR | 8 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2015 |
| Coliform (TCR) | MR | 2 | 2012 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2013 |
| Barium | MR | 1 | 2008 |
| Cadmium | MR | 1 | 2008 |
| Chromium | MR | 1 | 2008 |
| CYANIDE | MR | 1 | 2008 |
| Nitrite | MR | 1 | 2010 |
| Thallium, Total | MR | 1 | 2008 |
| Endrin | MR | 1 | 2008 |
| Methoxychlor | MR | 1 | 2008 |
| Dalapon | MR | 1 | 2008 |
| Diquat | MR | 1 | 2008 |
| Simazine | MR | 1 | 2008 |
| Picloram | MR | 1 | 2008 |
| Dinoseb | MR | 1 | 2008 |
| LASSO | MR | 1 | 2008 |
| 2,3,7,8-TCDD | MR | 1 | 2008 |
| Heptachlor | MR | 1 | 2008 |
| Heptachlor epoxide | 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 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2008 |
| ETHYLENE DIBROMIDE | MR | 1 | 2008 |
| Xylenes, Total | MR | 1 | 2008 |
| DICHLOROMETHANE | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.