QUONNIPAUG HILLS - MAIN SYSTEM
PWS ID: CT0600041 · BRANFORD, Connecticut 06405
Population Served
564
Total Violations
409
Health-Based Violations
37
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 187
- County
- New Haven
- School/Daycare
- No
- MCL Violations
- 37
- Monitoring Violations
- 349
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 37 | 2011 |
| E. COLI | MR | 28 | 2025 |
| Chlorine | MR | 8 | 2019 |
| Consumer Confidence Rule | Other | 7 | 2016 |
| Coliform (TCR) | MR | 6 | 2013 |
| 1,2,4-Trichlorobenzene | MR | 6 | 2019 |
| cis-1,2-Dichloroethylene | MR | 6 | 2019 |
| p-Dichlorobenzene | MR | 6 | 2019 |
| Vinyl chloride | MR | 6 | 2019 |
| trans-1,2-Dichloroethylene | MR | 6 | 2019 |
| Carbon tetrachloride | MR | 6 | 2019 |
| 1,2-Dichloropropane | MR | 6 | 2019 |
| Trichloroethylene | MR | 6 | 2019 |
| Tetrachloroethylene | MR | 6 | 2019 |
| CHLOROBENZENE | MR | 6 | 2019 |
| Styrene | MR | 6 | 2019 |
| Benzene | MR | 6 | 2019 |
| Toluene | MR | 6 | 2019 |
| Ethylbenzene | MR | 6 | 2019 |
| DICHLOROMETHANE | MR | 6 | 2019 |
| 1,1,2-Trichloroethane | MR | 6 | 2019 |
| o-Dichlorobenzene | MR | 6 | 2019 |
| 1,1,1-Trichloroethane | MR | 6 | 2019 |
| 1,2-Dichloroethane | MR | 6 | 2019 |
| 1,1-Dichloroethylene | MR | 6 | 2019 |
| Public Notice | Other | 5 | 2011 |
| Revised Total Coliform Rule | RPT | 4 | 2019 |
| Arsenic | MR | 4 | 2017 |
| Barium | MR | 4 | 2017 |
| Cadmium | MR | 4 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.