WASHINGTON
PWS ID: OK2004703 · WASHINGTON, Oklahoma 73093
Population Served
600
Total Violations
179
Health-Based Violations
19
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 330
- County
- McClain
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 135
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 17 | 2021 |
| Nitrate | MCL | 15 | 1993 |
| Arsenic | MR | 12 | 2014 |
| Simazine | MR | 11 | 2024 |
| Lead and Copper Rule | MR | 10 | 2019 |
| Consumer Confidence Rule | Other | 10 | 2017 |
| Dalapon | MR | 9 | 2024 |
| Diquat | MR | 9 | 2024 |
| Glyphosate | MR | 9 | 2024 |
| Picloram | MR | 9 | 2024 |
| Dinoseb | MR | 9 | 2024 |
| 2,4,5-TP | MR | 9 | 2024 |
| Pentachlorophenol | MR | 9 | 2024 |
| Revised Total Coliform Rule | MON | 8 | 2021 |
| Atrazine | MR | 4 | 2024 |
| LASSO | MR | 4 | 2024 |
| Coliform (TCR) | MR | 3 | 1998 |
| 2,4-D | MR | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| Coliform (TCR) | MCL | 2 | 1993 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.