Canyon De Chelly National Monument
PWS ID: NN0403022 · Chinle, Navajo Nation 86503
Population Served
55
Total Violations
185
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Federal
- Connections
- 37
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 140
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 20 | 2015 |
| Consumer Confidence Rule | Other | 16 | 2024 |
| TTHM | MR | 13 | 2011 |
| Nitrate | MR | 11 | 2011 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2011 |
| Nitrite | MR | 9 | 2011 |
| Revised Total Coliform Rule | RPT | 8 | 2024 |
| Revised Total Coliform Rule | MON | 5 | 2018 |
| Lead and Copper Rule | MR | 4 | 2004 |
| Coliform (TCR) | MCL | 4 | 2004 |
| Nitrate-Nitrite | MR | 4 | 2004 |
| Cadmium | MR | 1 | 2005 |
| Chromium | MR | 1 | 2005 |
| CYANIDE | MR | 1 | 2005 |
| Selenium | MR | 1 | 2005 |
| Antimony, Total | MR | 1 | 2005 |
| Beryllium, Total | MR | 1 | 2005 |
| Endrin | MR | 1 | 2005 |
| BHC-GAMMA | MR | 1 | 2005 |
| Toxaphene | MR | 1 | 2005 |
| Dalapon | MR | 1 | 2005 |
| Glyphosate | MR | 1 | 2005 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2005 |
| Simazine | MR | 1 | 2005 |
| Hexachlorocyclopentadiene | MR | 1 | 2005 |
| Aldicarb sulfoxide | MR | 1 | 2005 |
| Aldicarb sulfone | MR | 1 | 2005 |
| Carbofuran | MR | 1 | 2005 |
| Aldicarb | MR | 1 | 2005 |
| Atrazine | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.