Tsehootsooi Middle School
PWS ID: NN0400181 · Fort Defiance, Navajo Nation 86504
Population Served
875
Total Violations
309
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 116
- School/Daycare
- Yes
- MCL Violations
- 2
- Monitoring Violations
- 205
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 69 | 2016 |
| Revised Total Coliform Rule | MON | 37 | 2025 |
| Consumer Confidence Rule | Other | 24 | 2024 |
| Revised Total Coliform Rule | RPT | 18 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 11 | 2020 |
| TTHM | MR | 11 | 2020 |
| Public Notice | Other | 9 | 2025 |
| Lead and Copper Rule | MR | 7 | 2024 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2013 |
| Revised Total Coliform Rule | Other | 2 | 2016 |
| Coliform (TCR) | MCL | 2 | 2008 |
| CHLOROBENZENE | MR | 1 | 1996 |
| Methoxychlor | MR | 1 | 1996 |
| Styrene | MR | 1 | 1996 |
| Nitrate | MR | 1 | 1996 |
| LASSO | MR | 1 | 1996 |
| Toluene | MR | 1 | 1996 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 1996 |
| Hexachlorocyclopentadiene | MR | 1 | 1996 |
| ETHYLENE DIBROMIDE | MR | 1 | 1996 |
| Ethylbenzene | MR | 1 | 1996 |
| Endothall | MR | 1 | 1996 |
| Selenium | MR | 1 | 1996 |
| Chlordane | MR | 1 | 1996 |
| Vinyl chloride | MR | 1 | 1996 |
| Barium | MR | 1 | 1996 |
| Carbofuran | MR | 1 | 1996 |
| 1,1,2-Trichloroethane | MR | 1 | 1996 |
| 1,1-Dichloroethylene | MR | 1 | 1996 |
| Cadmium | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.