WASHINGTON CO RWD #7
PWS ID: OK3007415 · DEWEY, Oklahoma 74029
Population Served
258
Total Violations
306
Health-Based Violations
47
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 133
- County
- Washington
- School/Daycare
- No
- MCL Violations
- 44
- Monitoring Violations
- 170
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 108 | 2022 |
| TTHM | MCL | 37 | 2024 |
| TTHM | MR | 37 | 2024 |
| Coliform (TCR) | MR | 8 | 2008 |
| Chlorine | MR | 8 | 2024 |
| Total Haloacetic Acids (HAA5) | MCL | 7 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2022 |
| Revised Total Coliform Rule | MON | 4 | 2024 |
| Lead and Copper Rule | TT | 2 | 2017 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| Consumer Confidence Rule | Other | 1 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.