Aneth NTUA
PWS ID: NN4900220 · Ft Defiance, Navajo Nation 86504
Population Served
1,481
Total Violations
196
Health-Based Violations
74
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 433
- School/Daycare
- No
- MCL Violations
- 74
- Monitoring Violations
- 97
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 72 | 2024 |
| Arsenic | MR | 28 | 2024 |
| Public Notice | Other | 11 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2020 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2013 |
| TTHM | MR | 3 | 2020 |
| Combined Uranium | MCL | 2 | 2010 |
| Coliform (TCR) | MR | 2 | 2012 |
| Revised Total Coliform Rule | Other | 2 | 2016 |
| Nitrite | MR | 1 | 2010 |
| BHC-GAMMA | MR | 1 | 2004 |
| Diquat | MR | 1 | 2004 |
| Endothall | MR | 1 | 2004 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2004 |
| Simazine | MR | 1 | 2004 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2004 |
| Dinoseb | MR | 1 | 2004 |
| Aldicarb | MR | 1 | 2004 |
| Atrazine | MR | 1 | 2004 |
| LASSO | MR | 1 | 2004 |
| 2,3,7,8-TCDD | MR | 1 | 2004 |
| Heptachlor | MR | 1 | 2004 |
| 2,4-D | MR | 1 | 2004 |
| 2,4,5-TP | MR | 1 | 2004 |
| Benzo(a)pyrene | MR | 1 | 2004 |
| Pentachlorophenol | MR | 1 | 2004 |
| cis-1,2-Dichloroethylene | MR | 1 | 2005 |
| Xylenes, Total | MR | 1 | 2005 |
| o-Dichlorobenzene | MR | 1 | 2005 |
| 1,1-Dichloroethylene | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.