US NPS THOMPSON ISL PARK (11)
PWS ID: ME0198570 · BAR HARBOR, Maine 04609
Population Served
25
Total Violations
77
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Federal
- Connections
- 1
- County
- Hancock
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 63
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 29 | 2015 |
| Nitrite | MR | 12 | 2008 |
| Public Notice | Other | 8 | 2025 |
| E. COLI | MR | 8 | 2023 |
| Revised Total Coliform Rule | MON | 8 | 2020 |
| Coliform (TCR) | MR | 6 | 2000 |
| Revised Total Coliform Rule | TT | 4 | 2024 |
| Revised Total Coliform Rule | RPT | 2 | 2023 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.