TOWN OF OLLA WATER SYSTEM
PWS ID: LA1059004 · OLLA, Louisiana 71465
Population Served
2,565
Total Violations
140
Health-Based Violations
112
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 855
- County
- La Salle Parish
- School/Daycare
- No
- MCL Violations
- 112
- Monitoring Violations
- 18
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 102 | 2021 |
| TTHM | MR | 11 | 2017 |
| Coliform (TCR) | MCL | 10 | 2013 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2013 |
| Consumer Confidence Rule | Other | 4 | 2017 |
| Lead and Copper Rule | MR | 3 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.