Ramah-Sunset Valley RNUA
PWS ID: NN3500279 · Pinehill, Navajo Nation 87357
Population Served
294
Total Violations
553
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 78
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 473
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 43 | 2025 |
| Coliform (TCR) | MR | 30 | 2015 |
| Revised Total Coliform Rule | RPT | 20 | 2025 |
| Nitrate | MR | 19 | 2024 |
| Nitrite | MR | 19 | 2024 |
| Public Notice | Other | 10 | 2025 |
| Barium | MR | 8 | 2011 |
| Chromium | MR | 8 | 2011 |
| CYANIDE | MR | 8 | 2011 |
| Fluoride | MR | 8 | 2011 |
| Selenium | MR | 8 | 2011 |
| Antimony, Total | MR | 8 | 2011 |
| Beryllium, Total | MR | 8 | 2011 |
| Thallium, Total | MR | 8 | 2011 |
| Consumer Confidence Rule | Other | 8 | 2024 |
| Cadmium | MR | 8 | 2011 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2018 |
| TTHM | MR | 6 | 2018 |
| Mercury | MR | 5 | 2011 |
| Endrin | MR | 5 | 2011 |
| BHC-GAMMA | MR | 5 | 2011 |
| Methoxychlor | MR | 5 | 2011 |
| Toxaphene | MR | 5 | 2011 |
| Dalapon | MR | 5 | 2011 |
| Diquat | MR | 5 | 2011 |
| Endothall | MR | 5 | 2011 |
| Glyphosate | MR | 5 | 2011 |
| Di(2-ethylhexyl) adipate | MR | 5 | 2011 |
| OXAMYL | MR | 5 | 2011 |
| Simazine | MR | 5 | 2011 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.