USACE JOHN DAY DAM
PWS ID: OR4194203 · RUFUS, Oregon 97050
Population Served
120
Total Violations
105
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Federal
- Connections
- 5
- County
- Sherman
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 96
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 17 | 2012 |
| Lead and Copper Rule | MR | 11 | 2018 |
| Nitrate | MR | 7 | 2006 |
| Revised Total Coliform Rule | MON | 4 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2014 |
| TTHM | MR | 3 | 2014 |
| Coliform (TCR) | MCL | 2 | 1995 |
| Endrin | MR | 1 | 2005 |
| BHC-GAMMA | MR | 1 | 2005 |
| Methoxychlor | MR | 1 | 2005 |
| Toxaphene | MR | 1 | 2005 |
| Dalapon | MR | 1 | 2005 |
| Endothall | MR | 1 | 2005 |
| Glyphosate | MR | 1 | 2005 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2005 |
| OXAMYL | MR | 1 | 2005 |
| Simazine | MR | 1 | 2005 |
| Dinoseb | MR | 1 | 2005 |
| Hexachlorocyclopentadiene | MR | 1 | 2005 |
| Carbofuran | MR | 1 | 2005 |
| Heptachlor | MR | 1 | 2005 |
| 2,4,5-TP | MR | 1 | 2005 |
| Benzo(a)pyrene | MR | 1 | 2005 |
| Pentachlorophenol | MR | 1 | 2005 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2005 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2005 |
| ETHYLENE DIBROMIDE | MR | 1 | 2005 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2005 |
| cis-1,2-Dichloroethylene | MR | 1 | 2005 |
| Xylenes, Total | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.