SNO-CAP WATER SYSTEM
PWS ID: OR4100827 · SISTERS, Oregon 97759
Population Served
90
Total Violations
101
Health-Based Violations
14
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 45
- County
- Deschutes
- School/Daycare
- No
- MCL Violations
- 14
- Monitoring Violations
- 82
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 11 | 2011 |
| Coliform (TCR) | MR | 8 | 2002 |
| Nitrate | MR | 4 | 2004 |
| Revised Total Coliform Rule | MCL | 3 | 2022 |
| Arsenic | MR | 2 | 2011 |
| E. COLI | MR | 2 | 2011 |
| Consumer Confidence Rule | Other | 2 | 2025 |
| Barium | MR | 1 | 2002 |
| Cadmium | MR | 1 | 2002 |
| Chromium | MR | 1 | 2002 |
| Fluoride | MR | 1 | 2002 |
| Mercury | MR | 1 | 2002 |
| Antimony, Total | MR | 1 | 2002 |
| Nitrite | MR | 1 | 2002 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2002 |
| cis-1,2-Dichloroethylene | MR | 1 | 2002 |
| Xylenes, Total | MR | 1 | 2002 |
| Vinyl chloride | MR | 1 | 2002 |
| 1,1,1-Trichloroethane | MR | 1 | 2002 |
| Carbon tetrachloride | MR | 1 | 2002 |
| 1,2-Dichloropropane | MR | 1 | 2002 |
| Tetrachloroethylene | MR | 1 | 2002 |
| CHLOROBENZENE | MR | 1 | 2002 |
| Toluene | MR | 1 | 2002 |
| Styrene | MR | 1 | 2002 |
| Endrin | MR | 1 | 2002 |
| BHC-GAMMA | MR | 1 | 2002 |
| Dalapon | MR | 1 | 2002 |
| Diquat | MR | 1 | 2002 |
| Simazine | MR | 1 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.