GRISWOLD MHP LLC
PWS ID: CT0580031 · GREAT NECK, Connecticut 11021
Population Served
99
Total Violations
284
Health-Based Violations
25
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 39
- County
- New London
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 176
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 40 | 2021 |
| Coliform (TCR) | MCL | 17 | 2014 |
| Lead and Copper Rule | MR | 15 | 2022 |
| Cadmium | MR | 9 | 2016 |
| Chromium | MR | 9 | 2016 |
| CYANIDE | MR | 9 | 2016 |
| Fluoride | MR | 9 | 2016 |
| Nickel | MR | 9 | 2016 |
| Antimony, Total | MR | 9 | 2016 |
| Beryllium, Total | MR | 9 | 2016 |
| Thallium, Total | MR | 9 | 2016 |
| Barium | MR | 9 | 2016 |
| Selenium | MR | 9 | 2016 |
| Arsenic | MR | 9 | 2016 |
| Mercury | MR | 9 | 2016 |
| Lead and Copper Rule | TT | 8 | 2020 |
| Coliform (TCR) | MR | 8 | 2000 |
| p-Dichlorobenzene | MR | 5 | 1991 |
| Vinyl chloride | MR | 5 | 1991 |
| 1,1-Dichloroethylene | MR | 5 | 1991 |
| 1,2-Dichloroethane | MR | 5 | 1991 |
| Trichloroethylene | MR | 5 | 1991 |
| Benzene | MR | 5 | 1991 |
| Gross Alpha, Excl. Radon and U | MR | 5 | 1993 |
| Carbon tetrachloride | MR | 5 | 1991 |
| 1,1,1-Trichloroethane | MR | 5 | 1991 |
| 1,1-Dichloroethylene | Other | 4 | 1992 |
| Trichloroethylene | Other | 4 | 1992 |
| 1,2-Dichloroethane | Other | 4 | 1992 |
| Benzene | Other | 4 | 1992 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.