Tonalea (Red Lake) Day School BIA
PWS ID: NN0433013 · Tonalea, Navajo Nation 86044
Population Served
300
Total Violations
103
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Federal
- Connections
- 15
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 81
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 10 | 2012 |
| 2,3,7,8-TCDD | MR | 5 | 2008 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2008 |
| p-Dichlorobenzene | MR | 4 | 2008 |
| Revised Total Coliform Rule | RPT | 4 | 2024 |
| Revised Total Coliform Rule | Other | 3 | 2016 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2013 |
| Consumer Confidence Rule | Other | 2 | 2024 |
| Toxaphene | MR | 1 | 2004 |
| Endrin | MR | 1 | 2004 |
| BHC-GAMMA | MR | 1 | 2004 |
| Dalapon | MR | 1 | 2004 |
| Diquat | MR | 1 | 2004 |
| Endothall | MR | 1 | 2004 |
| Glyphosate | MR | 1 | 2004 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2004 |
| OXAMYL | MR | 1 | 2004 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2004 |
| Picloram | MR | 1 | 2004 |
| Hexachlorocyclopentadiene | MR | 1 | 2004 |
| Aldicarb sulfone | MR | 1 | 2004 |
| Carbofuran | MR | 1 | 2004 |
| Atrazine | MR | 1 | 2004 |
| Heptachlor epoxide | MR | 1 | 2004 |
| HEXACHLOROBENZENE | MR | 1 | 2004 |
| Benzo(a)pyrene | MR | 1 | 2004 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2004 |
| Xylenes, Total | MR | 1 | 2004 |
| DICHLOROMETHANE | MR | 1 | 2004 |
| o-Dichlorobenzene | MR | 1 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.