HORACE PORTER SCHOOL
PWS ID: CT0300062 · COLUMBIA, Connecticut 06237
Population Served
797
Total Violations
100
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Tolland
- School/Daycare
- Yes
- MCL Violations
- 3
- Monitoring Violations
- 97
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 10 | 2023 |
| Coliform (TCR) | MR | 7 | 1999 |
| cis-1,2-Dichloroethylene | MR | 4 | 2006 |
| o-Dichlorobenzene | MR | 4 | 2006 |
| 1,1-Dichloroethylene | MR | 4 | 2006 |
| 1,2-Dichloroethane | MR | 4 | 2006 |
| 1,1,1-Trichloroethane | MR | 4 | 2006 |
| 1,2-Dichloropropane | MR | 4 | 2006 |
| Trichloroethylene | MR | 4 | 2006 |
| Benzene | MR | 4 | 2006 |
| Toluene | MR | 4 | 2006 |
| Ethylbenzene | MR | 4 | 2006 |
| Styrene | MR | 4 | 2006 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2006 |
| p-Dichlorobenzene | MR | 4 | 2006 |
| 1,1,2-Trichloroethane | MR | 4 | 2006 |
| CHLOROBENZENE | MR | 4 | 2006 |
| Tetrachloroethylene | MR | 4 | 2006 |
| DICHLOROMETHANE | MR | 4 | 2006 |
| Carbon tetrachloride | MR | 4 | 2006 |
| Vinyl chloride | MR | 4 | 2006 |
| trans-1,2-Dichloroethylene | MR | 4 | 2006 |
| Coliform (TCR) | MCL | 3 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.