RIDGEWOOD HILLS ASSOCIATION SYSTEM 1
PWS ID: CT0361011 · KILLINGWORTH, Connecticut 06419
Population Served
36
Total Violations
712
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 6
- County
- Middlesex
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 380
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 16 | 2008 |
| Lead and Copper Rule | MR | 14 | 2024 |
| Combined Radium (-226 and -228) | MR | 12 | 2006 |
| Combined Uranium | MR | 12 | 2006 |
| Gross Alpha, Excl. Radon and U | MR | 12 | 2006 |
| ETHYLENE DIBROMIDE | MR | 11 | 1995 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 11 | 1995 |
| Consumer Confidence Rule | Other | 10 | 2020 |
| o-Dichlorobenzene | MR | 9 | 1994 |
| Tetrachloroethylene | MR | 9 | 1994 |
| trans-1,2-Dichloroethylene | MR | 9 | 1994 |
| 1,2-Dichloropropane | MR | 9 | 1994 |
| 1,1,2-Trichloroethane | MR | 9 | 1994 |
| CHLOROBENZENE | MR | 9 | 1994 |
| Toluene | MR | 9 | 1994 |
| Styrene | MR | 9 | 1994 |
| Trichloroethylene | MR | 9 | 1994 |
| 1,2-Dichloroethane | MR | 9 | 1994 |
| 1,1-Dichloroethylene | MR | 9 | 1994 |
| Vinyl chloride | MR | 9 | 1994 |
| Benzene | MR | 9 | 1994 |
| cis-1,2-Dichloroethylene | MR | 9 | 1994 |
| p-Dichlorobenzene | MR | 9 | 1994 |
| Ethylbenzene | MR | 9 | 1994 |
| 1,1,1-Trichloroethane | MR | 9 | 1994 |
| Carbon tetrachloride | MR | 9 | 1994 |
| DICHLOROMETHANE | MR | 9 | 1994 |
| Lead and Copper Rule | TT | 7 | 1997 |
| Chloromethane | Other | 7 | 1995 |
| Bromomethane | Other | 7 | 1995 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.