MAUPIN, CITY OF
PWS ID: OR4100510 · MAUPIN, Oregon 97037
Population Served
420
Total Violations
38
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 340
- County
- Wasco
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 25
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Groundwater Rule | MR | 11 | 2025 |
| Coliform (TCR) | MR | 3 | 2011 |
| Groundwater Rule | TT | 3 | 2016 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Consumer Confidence Rule | Other | 3 | 2025 |
| Public Notice | Other | 2 | 2025 |
| Nitrate | MR | 2 | 2021 |
| Lead and Copper Rule | MR | 2 | 2022 |
| TTHM | MR | 1 | 2020 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2020 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.