CTWC - UNIONVILLE SYSTEM
Connecticut — Community Water System — PWSID: CT0520011
System Information
| PWSID | CT0520011 |
| System Name | CTWC - UNIONVILLE SYSTEM |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 8, 1979 |
| Last Reported | Dec 15, 2025 |
Location & Contact
| State | Connecticut |
| City | CLINTON |
| ZIP Code | 06413 |
| Address | 93 West Main Street |
| Organization | MCDERMOTT, GERALD |
| Phone | 860-664-6125 |
Population & Service
| Population Served | 14,693 |
| Service Connections | 6,319 |
Drinking Water Violations (23)
This water system has 23 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2019 | Nov 30, 2019 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Nov 30, 2019 | Ground Water Rule |
| Nov 1, 2019 | Nov 30, 2019 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Nov 30, 2019 | Ground Water Rule |
| Nov 1, 2019 | Nov 30, 2019 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Nov 30, 2019 | Ground Water Rule |
| Nov 1, 2019 | Nov 30, 2019 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Nov 30, 2019 | Ground Water Rule |
| Dec 30, 2016 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 9, 2022 | Lead and Copper Rule |
| Dec 30, 2016 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 9, 2022 | Lead and Copper Rule |
| Aug 1, 2002 | Aug 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2002 | Total Coliform Rule |
| Aug 1, 2002 | Aug 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2002 | Total Coliform Rule |
| Aug 1, 2002 | Aug 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2002 | Total Coliform Rule |
| Aug 1, 2002 | Aug 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2002 | Total Coliform Rule |
| Jan 1, 1999 | Jan 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 1999 | Total Coliform Rule |
| Jan 1, 1999 | Jan 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 1999 | Total Coliform Rule |
| Jan 1, 1999 | Jan 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 1999 | Total Coliform Rule |
| Jan 1, 1999 | Jan 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 1999 | Total Coliform Rule |
| Jan 1, 1999 | Jan 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 1999 | Total Coliform Rule |
| Apr 1, 1991 | Jun 30, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1991 | Total Coliform Rule |
| Apr 1, 1991 | Jun 30, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1991 | Total Coliform Rule |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.