ROCKVALE TRAVEL PLAZA JOLIET
PWS ID: MT0003660 · BILLINGS, Montana 59108
Population Served
300
Total Violations
353
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Carbon
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 340
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 299 | 2015 |
| Nitrate-Nitrite | MR | 23 | 2004 |
| Revised Total Coliform Rule | MON | 12 | 2021 |
| Nitrate | MR | 6 | 1994 |
| Coliform (TCR) | MCL | 5 | 2005 |
| Groundwater Rule | TT | 3 | 2012 |
| Revised Total Coliform Rule | Other | 3 | 2016 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.