Chinle USD 24 Administration Center
PWS ID: NN0403060 · Chinle, Navajo Nation 86503
Population Served
220
Total Violations
210
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 57
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 128
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 48 | 2016 |
| Consumer Confidence Rule | Other | 28 | 2024 |
| Nitrate | MR | 22 | 2024 |
| Nitrite | MR | 20 | 2024 |
| Revised Total Coliform Rule | MON | 20 | 2025 |
| Revised Total Coliform Rule | RPT | 19 | 2025 |
| Arsenic | MCL | 8 | 2012 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2011 |
| TTHM | MR | 6 | 2011 |
| Public Notice | Other | 4 | 2023 |
| Arsenic | MR | 3 | 2013 |
| Lead and Copper Rule | MR | 3 | 2008 |
| Revised Total Coliform Rule | Other | 3 | 2016 |
| Antimony, Total | MCL | 2 | 1999 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.