Rocky Ridge Boarding School BIA
PWS ID: NN0433015 · Kykotsmovi, Navajo Nation 86039
Population Served
250
Total Violations
163
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Federal
- Connections
- 20
- School/Daycare
- Yes
- MCL Violations
- 3
- Monitoring Violations
- 139
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 7 | 2024 |
| Nitrite | MR | 7 | 2024 |
| Coliform (TCR) | MR | 7 | 2012 |
| Revised Total Coliform Rule | MON | 5 | 2023 |
| Revised Total Coliform Rule | RPT | 4 | 2024 |
| Coliform (TCR) | MCL | 3 | 2003 |
| Methoxychlor | MR | 2 | 2004 |
| Dalapon | MR | 2 | 2004 |
| Diquat | MR | 2 | 2004 |
| Endothall | MR | 2 | 2004 |
| Glyphosate | MR | 2 | 2004 |
| OXAMYL | MR | 2 | 2004 |
| Dinoseb | MR | 2 | 2004 |
| Aldicarb | MR | 2 | 2004 |
| Atrazine | MR | 2 | 2004 |
| LASSO | MR | 2 | 2004 |
| 2,3,7,8-TCDD | MR | 2 | 2004 |
| Heptachlor epoxide | MR | 2 | 2004 |
| Benzo(a)pyrene | MR | 2 | 2004 |
| Pentachlorophenol | MR | 2 | 2004 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2004 |
| cis-1,2-Dichloroethylene | MR | 2 | 2004 |
| Total Polychlorinated Biphenyls (PCB) | MR | 2 | 2004 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 2 | 2004 |
| Xylenes, Total | MR | 2 | 2004 |
| o-Dichlorobenzene | MR | 2 | 2004 |
| 1,2-Dichloroethane | MR | 2 | 2004 |
| Tetrachloroethylene | MR | 2 | 2004 |
| Benzene | MR | 2 | 2004 |
| Ethylbenzene | MR | 2 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.