MYSTIC KOA
PWS ID: CT1020164 · NORTH STONINGTON, Connecticut 06359
Population Served
33
Total Violations
118
Health-Based Violations
56
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 275
- County
- New London
- School/Daycare
- No
- MCL Violations
- 24
- Monitoring Violations
- 44
- Treatment Tech Violations
- 32
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 24 | 2015 |
| Coliform (TCR) | MR | 18 | 2015 |
| Groundwater Rule | TT | 16 | 2012 |
| E. COLI | MR | 16 | 2018 |
| Revised Total Coliform Rule | TT | 16 | 2023 |
| Public Notice | Other | 12 | 2023 |
| Groundwater Rule | MR | 6 | 2012 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.