OLD UNION PUBLIC WATER AUTHORITY
PWS ID: AR0000559 · EL DORADO, Arkansas 71730
Population Served
1,200
Total Violations
106
Health-Based Violations
41
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 482
- County
- Union
- School/Daycare
- No
- MCL Violations
- 41
- Monitoring Violations
- 11
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 39 | 2019 |
| Revised Total Coliform Rule | RPT | 27 | 2023 |
| Public Notice | Other | 12 | 2023 |
| Revised Total Coliform Rule | MON | 4 | 2022 |
| Lead and Copper Rule | MR | 4 | 2022 |
| Coliform (TCR) | MR | 3 | 2015 |
| Revised Total Coliform Rule | MCL | 2 | 2022 |
| Consumer Confidence Rule | Other | 2 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.