HOLUM WATER SYSTEM
PWS ID: LA1021007 · GRAYSON, Louisiana 71435
Population Served
1,230
Total Violations
310
Health-Based Violations
239
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 410
- County
- Caldwell Parish
- School/Daycare
- No
- MCL Violations
- 228
- Monitoring Violations
- 59
- Treatment Tech Violations
- 11
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 217 | 2025 |
| TTHM | MR | 24 | 2017 |
| Coliform (TCR) | MR | 15 | 2015 |
| Chlorine | MR | 8 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2016 |
| Groundwater Rule | TT | 7 | 2021 |
| Total Haloacetic Acids (HAA5) | MCL | 7 | 2019 |
| Public Notice | Other | 5 | 2018 |
| Lead and Copper Rule | MR | 4 | 2005 |
| Revised Total Coliform Rule | TT | 4 | 2022 |
| Coliform (TCR) | MCL | 4 | 2014 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.