UMPQUA RANCH COOP
PWS ID: OR4100714 · IDLEYLD, Oregon 97447
Population Served
161
Total Violations
253
Health-Based Violations
51
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 92
- County
- Douglas
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 176
- Treatment Tech Violations
- 44
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 44 | 2022 |
| Coliform (TCR) | MR | 42 | 2012 |
| Surface Water Treatment Rule | MR | 26 | 2022 |
| COLIPHAGE | MR | 19 | 2017 |
| Public Notice | Other | 11 | 2023 |
| Nitrate | MR | 9 | 2019 |
| Consumer Confidence Rule | Other | 7 | 2004 |
| Coliform (TCR) | MCL | 7 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2019 |
| TTHM | MR | 5 | 2019 |
| Arsenic | MR | 2 | 1999 |
| Antimony, Total | MR | 2 | 1999 |
| Beryllium, Total | MR | 2 | 1999 |
| CYANIDE | MR | 2 | 1999 |
| Thallium, Total | MR | 2 | 1999 |
| Lead and Copper Rule | MR | 2 | 2018 |
| E. COLI | MR | 2 | 2019 |
| Nickel | MR | 2 | 1999 |
| Interim Enhanced Surface Water Treatment Rule | MR | 1 | 2005 |
| Revised Total Coliform Rule | MON | 1 | 2017 |
| Endrin | MR | 1 | 2017 |
| BHC-GAMMA | MR | 1 | 2017 |
| Toxaphene | MR | 1 | 2017 |
| Dalapon | MR | 1 | 2017 |
| Endothall | MR | 1 | 2017 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2017 |
| Hexachlorocyclopentadiene | MR | 1 | 2017 |
| Carbofuran | MR | 1 | 2017 |
| Atrazine | MR | 1 | 2017 |
| LASSO | MR | 1 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.