Montezuma Creek NTUA
PWS ID: NN4903018 · Ft Defiance, Navajo Nation 86504
Population Served
424
Total Violations
130
Health-Based Violations
42
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 124
- School/Daycare
- No
- MCL Violations
- 42
- Monitoring Violations
- 71
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 39 | 2015 |
| Arsenic | MR | 9 | 2022 |
| Coliform (TCR) | MR | 7 | 2015 |
| Fluoride | MR | 6 | 2011 |
| Public Notice | Other | 4 | 2015 |
| Barium | MR | 3 | 2008 |
| Cadmium | MR | 3 | 2008 |
| Chromium | MR | 3 | 2008 |
| CYANIDE | MR | 3 | 2008 |
| Mercury | MR | 3 | 2008 |
| Diquat | MR | 3 | 2008 |
| Endothall | MR | 3 | 2008 |
| 2,3,7,8-TCDD | MR | 3 | 2008 |
| ETHYLENE DIBROMIDE | MR | 3 | 2008 |
| Coliform (TCR) | MCL | 3 | 2011 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2013 |
| Glyphosate | MR | 3 | 2008 |
| Selenium | MR | 3 | 2008 |
| Beryllium, Total | MR | 3 | 2008 |
| Total Polychlorinated Biphenyls (PCB) | MR | 3 | 2008 |
| Thallium, Total | MR | 3 | 2008 |
| Dalapon | MR | 3 | 2008 |
| Revised Total Coliform Rule | Other | 2 | 2016 |
| Nitrite | MR | 1 | 2010 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.