ROCK CREEK WATER DISTRICT
PWS ID: OR4100337 · GRAND RONDE, Oregon 97347
Population Served
300
Total Violations
419
Health-Based Violations
17
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 108
- County
- Polk
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 391
- Treatment Tech Violations
- 16
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 291 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | MR | 31 | 2025 |
| Surface Water Treatment Rule | TT | 16 | 2025 |
| Coliform (TCR) | MR | 12 | 2015 |
| Nitrate | MR | 6 | 2009 |
| Consumer Confidence Rule | Other | 5 | 2025 |
| Public Notice | Other | 3 | 2025 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2009 |
| DICHLOROMETHANE | MR | 2 | 2009 |
| p-Dichlorobenzene | MR | 2 | 2009 |
| Vinyl chloride | MR | 2 | 2009 |
| trans-1,2-Dichloroethylene | MR | 2 | 2009 |
| 1,2-Dichloroethane | MR | 2 | 2009 |
| 1,1,1-Trichloroethane | MR | 2 | 2009 |
| Carbon tetrachloride | MR | 2 | 2009 |
| 1,2-Dichloropropane | MR | 2 | 2009 |
| Trichloroethylene | MR | 2 | 2009 |
| Benzene | MR | 2 | 2009 |
| Toluene | MR | 2 | 2009 |
| Xylenes, Total | MR | 2 | 2009 |
| cis-1,2-Dichloroethylene | MR | 2 | 2009 |
| o-Dichlorobenzene | MR | 2 | 2009 |
| Styrene | MR | 2 | 2009 |
| 1,1-Dichloroethylene | MR | 2 | 2009 |
| 1,1,2-Trichloroethane | MR | 2 | 2009 |
| Ethylbenzene | MR | 2 | 2009 |
| Tetrachloroethylene | MR | 2 | 2009 |
| CHLOROBENZENE | MR | 2 | 2009 |
| DICHLOROMETHANE | MCL | 1 | 2007 |
| Cadmium | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.