CIRCLE C IMPROVEMENT DISTRICT
PWS ID: OR4100861 · TERREBONNE, Oregon 97760
Population Served
150
Total Violations
127
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 75
- County
- Deschutes
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 114
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 37 | 2005 |
| Consumer Confidence Rule | Other | 7 | 2025 |
| Nitrate | MR | 7 | 2020 |
| Arsenic | MR | 2 | 1999 |
| Combined Radium (-226 and -228) | MR | 2 | 2025 |
| Toluene | MR | 2 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 2025 |
| Carbon tetrachloride | MR | 1 | 1999 |
| CHLOROBENZENE | MR | 1 | 1999 |
| o-Dichlorobenzene | MR | 1 | 1999 |
| p-Dichlorobenzene | MR | 1 | 1999 |
| Vinyl chloride | MR | 1 | 1999 |
| 2,4-D | MR | 1 | 1999 |
| Benzo(a)pyrene | MR | 1 | 1999 |
| Carbofuran | MR | 1 | 1999 |
| Dalapon | MR | 1 | 1999 |
| Diquat | MR | 1 | 1999 |
| ETHYLENE DIBROMIDE | MR | 1 | 1999 |
| Heptachlor epoxide | MR | 1 | 1999 |
| Heptachlor | MR | 1 | 1999 |
| HEXACHLOROBENZENE | MR | 1 | 1999 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 1999 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 1999 |
| Toxaphene | MR | 1 | 1999 |
| Antimony, Total | MR | 1 | 1999 |
| Beryllium, Total | MR | 1 | 1999 |
| Barium | MR | 1 | 1996 |
| Thallium, Total | MR | 1 | 1999 |
| Cadmium | MR | 1 | 1996 |
| Selenium | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.