Tohatchi Public School
PWS ID: NN3500299 · Tohatchi, Navajo Nation 87325
Population Served
240
Total Violations
663
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 60
- School/Daycare
- Yes
- MCL Violations
- 1
- Monitoring Violations
- 616
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 50 | 2014 |
| Nitrate | MR | 16 | 2021 |
| Consumer Confidence Rule | Other | 11 | 2022 |
| Nitrite | MR | 11 | 2021 |
| Barium | MR | 9 | 2008 |
| CYANIDE | MR | 9 | 2008 |
| Mercury | MR | 9 | 2008 |
| Diquat | MR | 9 | 2008 |
| Endothall | MR | 9 | 2008 |
| Glyphosate | MR | 9 | 2008 |
| 2,3,7,8-TCDD | MR | 9 | 2008 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 9 | 2008 |
| ETHYLENE DIBROMIDE | MR | 9 | 2008 |
| Arsenic | MR | 8 | 2011 |
| Cadmium | MR | 8 | 2011 |
| Chromium | MR | 8 | 2011 |
| Selenium | MR | 8 | 2011 |
| Antimony, Total | MR | 8 | 2011 |
| Beryllium, Total | MR | 8 | 2011 |
| Thallium, Total | MR | 8 | 2011 |
| Endrin | MR | 8 | 2011 |
| BHC-GAMMA | MR | 8 | 2011 |
| Methoxychlor | MR | 8 | 2011 |
| Dalapon | MR | 8 | 2011 |
| Di(2-ethylhexyl) adipate | MR | 8 | 2011 |
| OXAMYL | MR | 8 | 2011 |
| Simazine | MR | 8 | 2011 |
| Di(2-ethylhexyl) phthalate | MR | 8 | 2011 |
| Picloram | MR | 8 | 2011 |
| Dinoseb | MR | 8 | 2011 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.