DELPHIAN SCHOOL
PWS ID: OR4100812 · SHERIDAN, Oregon 97378
Population Served
350
Total Violations
25
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Public/Private
- Connections
- 3
- County
- Yamhill
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 22
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 4 | 2010 |
| Nitrate | MR | 4 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2014 |
| Lead and Copper Rule | MR | 3 | 1994 |
| TTHM | MR | 3 | 2014 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1996 |
| Consumer Confidence Rule | Other | 2 | 2025 |
| Revised Total Coliform Rule | MON | 1 | 2022 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| E. COLI | MR | 1 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.