227 HORSE POND ROAD - MADISON
PWS ID: CT0769203 · MADISON, Connecticut 06443
Population Served
55
Total Violations
328
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- New Haven
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 311
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 24 | 2018 |
| Coliform (TCR) | MR | 23 | 2010 |
| E. COLI | MR | 8 | 2018 |
| Public Notice | Other | 6 | 2011 |
| Total Polychlorinated Biphenyls (PCB) | MR | 4 | 2005 |
| Endrin | MR | 4 | 2005 |
| Dalapon | MR | 4 | 2005 |
| Glyphosate | MR | 4 | 2005 |
| Simazine | MR | 4 | 2005 |
| Picloram | MR | 4 | 2005 |
| Hexachlorocyclopentadiene | MR | 4 | 2005 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2005 |
| 1,1-Dichloroethylene | MR | 4 | 2005 |
| 1,2-Dichloroethane | MR | 4 | 2005 |
| 1,1,1-Trichloroethane | MR | 4 | 2005 |
| Carbon tetrachloride | MR | 4 | 2005 |
| 1,2-Dichloropropane | MR | 4 | 2005 |
| Trichloroethylene | MR | 4 | 2005 |
| 1,1,2-Trichloroethane | MR | 4 | 2005 |
| Tetrachloroethylene | MR | 4 | 2005 |
| Benzene | MR | 4 | 2005 |
| Styrene | MR | 4 | 2005 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
| Barium | MR | 4 | 2003 |
| Cadmium | MR | 4 | 2003 |
| Chromium | MR | 4 | 2003 |
| CYANIDE | MR | 4 | 2003 |
| Mercury | MR | 4 | 2003 |
| Beryllium, Total | MR | 4 | 2003 |
| Thallium, Total | MR | 4 | 2003 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.