YNP-NORRIS
PWS ID: WY5680084 · YELLOWSTONE NP, Wyoming 82190
Population Served
1,515
Total Violations
8
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Transient Non-Community
- Owner Type
- Federal
- Connections
- 30
- County
- Park
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 8
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 3 | 1995 |
| Revised Total Coliform Rule | MON | 2 | 2023 |
| Surface Water Treatment Rule | MR | 1 | 2023 |
| Nitrate-Nitrite | MR | 1 | 2023 |
| Nitrate | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.