HOLLISTER
PWS ID: OK2007102 · HOLLISTER, Oklahoma 73551
Population Served
60
Total Violations
487
Health-Based Violations
44
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 20
- County
- Tillman
- School/Daycare
- No
- MCL Violations
- 42
- Monitoring Violations
- 356
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MR | 102 | 2022 |
| Lead and Copper Rule | MR | 97 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 94 | 2022 |
| Coliform (TCR) | MR | 62 | 2013 |
| Public Notice | Other | 40 | 2019 |
| TTHM | MCL | 24 | 2007 |
| Consumer Confidence Rule | Other | 17 | 2017 |
| Nitrate-Nitrite | MCL | 8 | 2007 |
| Coliform (TCR) | MCL | 6 | 2006 |
| Combined Uranium | MCL | 4 | 2006 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| E. COLI | MR | 1 | 2013 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.