Round Rock Elementary School
PWS ID: NN0403024 · Teec Nos Pos, Navajo Nation 86514
Population Served
396
Total Violations
801
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 82
- School/Daycare
- Yes
- MCL Violations
- 3
- Monitoring Violations
- 717
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 66 | 2015 |
| Nitrate | MR | 24 | 2020 |
| Revised Total Coliform Rule | RPT | 20 | 2025 |
| Nitrite | MR | 17 | 2020 |
| Diquat | MR | 12 | 2008 |
| Endothall | MR | 12 | 2008 |
| Glyphosate | MR | 12 | 2008 |
| 2,3,7,8-TCDD | MR | 12 | 2008 |
| Total Polychlorinated Biphenyls (PCB) | MR | 12 | 2008 |
| Endrin | MR | 9 | 2005 |
| BHC-GAMMA | MR | 9 | 2005 |
| Methoxychlor | MR | 9 | 2005 |
| Toxaphene | MR | 9 | 2005 |
| Dalapon | MR | 9 | 2005 |
| Di(2-ethylhexyl) adipate | MR | 9 | 2005 |
| OXAMYL | MR | 9 | 2005 |
| Simazine | MR | 9 | 2005 |
| Di(2-ethylhexyl) phthalate | MR | 9 | 2005 |
| Picloram | MR | 9 | 2005 |
| Dinoseb | MR | 9 | 2005 |
| Hexachlorocyclopentadiene | MR | 9 | 2005 |
| Aldicarb sulfoxide | MR | 9 | 2005 |
| Aldicarb sulfone | MR | 9 | 2005 |
| Carbofuran | MR | 9 | 2005 |
| Aldicarb | MR | 9 | 2005 |
| Atrazine | MR | 9 | 2005 |
| LASSO | MR | 9 | 2005 |
| Heptachlor | MR | 9 | 2005 |
| 2,4-D | MR | 9 | 2005 |
| HEXACHLOROBENZENE | MR | 9 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.