GILLETTE CASTLE STATE PARK / CASTLE WELL
PWS ID: CT0410304 · PORTLAND, Connecticut 06480
Population Served
25
Total Violations
9
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 1
- County
- Middlesex
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 5
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 4 | 2009 |
| Coliform (TCR) | MR | 3 | 2012 |
| Nitrite | MR | 1 | 2002 |
| Nitrate | MR | 1 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.