TWIN OAKS ELEMENTARY SD 4J
PWS ID: OR4191879 · EUGENE, Oregon 97402
Population Served
170
Total Violations
33
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Lane
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 28
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 15 | 2008 |
| Lead and Copper Rule | MR | 7 | 2023 |
| Nitrate | MR | 4 | 2004 |
| Revised Total Coliform Rule | MON | 2 | 2016 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.