KNOB HILL CONDOMINIUMS
PWS ID: CT0280051 · MANCHESTER, Connecticut 06042
Population Served
84
Total Violations
304
Health-Based Violations
24
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 28
- County
- New London
- School/Daycare
- No
- MCL Violations
- 24
- Monitoring Violations
- 252
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 24 | 2007 |
| Coliform (TCR) | MR | 19 | 2007 |
| E. COLI | MR | 16 | 2020 |
| Lead and Copper Rule | MR | 13 | 2018 |
| Public Notice | Other | 10 | 2007 |
| Revised Total Coliform Rule | RPT | 8 | 2021 |
| Selenium | MR | 7 | 2022 |
| Mercury | MR | 7 | 2022 |
| Fluoride | MR | 7 | 2022 |
| Chromium | MR | 7 | 2022 |
| Cadmium | MR | 7 | 2022 |
| Arsenic | MR | 7 | 2022 |
| Barium | MR | 7 | 2022 |
| Nitrate | MR | 6 | 2017 |
| Gross Alpha, Excl. Radon and U | MR | 6 | 1991 |
| 1,1-Dichloroethylene | MR | 4 | 1990 |
| 1,2-Dichloroethane | MR | 4 | 1990 |
| 1,1,1-Trichloroethane | MR | 4 | 1990 |
| Carbon tetrachloride | MR | 4 | 1990 |
| Trichloroethylene | MR | 4 | 1990 |
| Benzene | MR | 4 | 1990 |
| DICHLOROMETHANE | MR | 4 | 1990 |
| o-Dichlorobenzene | MR | 4 | 1990 |
| trans-1,2-Dichloroethylene | MR | 4 | 1990 |
| Tetrachloroethylene | MR | 4 | 1990 |
| CHLOROBENZENE | MR | 4 | 1990 |
| Ethylbenzene | MR | 4 | 1990 |
| Styrene | MR | 4 | 1990 |
| Toluene | MR | 4 | 1990 |
| ETHYLENE DIBROMIDE | MR | 4 | 1990 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.