St Michael Indian School
PWS ID: NN0400380 · St Michaels, Navajo Nation 86511
Population Served
585
Total Violations
1,202
Health-Based Violations
17
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 38
- School/Daycare
- Yes
- MCL Violations
- 17
- Monitoring Violations
- 1,110
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 56 | 2025 |
| Coliform (TCR) | MR | 38 | 2014 |
| Public Notice | Other | 36 | 2025 |
| TTHM | MR | 33 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 32 | 2022 |
| Nitrate | MR | 23 | 2024 |
| Nitrite | MR | 22 | 2024 |
| Revised Total Coliform Rule | RPT | 21 | 2025 |
| Endrin | MR | 16 | 2013 |
| BHC-GAMMA | MR | 16 | 2013 |
| Methoxychlor | MR | 16 | 2013 |
| Toxaphene | MR | 16 | 2013 |
| Dalapon | MR | 16 | 2013 |
| Diquat | MR | 16 | 2013 |
| Endothall | MR | 16 | 2013 |
| Glyphosate | MR | 16 | 2013 |
| Di(2-ethylhexyl) adipate | MR | 16 | 2013 |
| OXAMYL | MR | 16 | 2013 |
| Simazine | MR | 16 | 2013 |
| Di(2-ethylhexyl) phthalate | MR | 16 | 2013 |
| Picloram | MR | 16 | 2013 |
| Dinoseb | MR | 16 | 2013 |
| Hexachlorocyclopentadiene | MR | 16 | 2013 |
| Carbofuran | MR | 16 | 2013 |
| Atrazine | MR | 16 | 2013 |
| LASSO | MR | 16 | 2013 |
| 2,3,7,8-TCDD | MR | 16 | 2013 |
| Heptachlor | MR | 16 | 2013 |
| Heptachlor epoxide | MR | 16 | 2013 |
| 2,4-D | MR | 16 | 2013 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.