VERMONT YANKEE PLANT MAIN
Connecticut — Non-Transient Non-Community — PWSID: VT0008332
System Information
| PWSID | VT0008332 |
| System Name | VERMONT YANKEE PLANT MAIN |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Non-Inventory |
| Owner Type | Private |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 16, 1987 |
| Last Reported | Nov 6, 2025 |
Location & Contact
| State | Connecticut |
| City | ROCKY HILL |
| ZIP Code | 06067 |
| Address | HALEY & ALDRICH INC |
| Organization | DANAHER, ELIDA S |
| Phone | 860-290-3116 |
Population & Service
| Population Served | 400 |
| Service Connections | 9 |
Drinking Water Violations (33)
This water system has 33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2019 | Mar 31, 2019 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | Radionuclides and Revised Rad Rule |
| Jan 1, 2019 | Mar 31, 2019 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | Radionuclides and Revised Rad Rule |
| Jan 1, 2019 | Mar 31, 2019 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | Radionuclides and Revised Rad Rule |
| Jan 1, 2019 | Mar 31, 2019 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | Radionuclides and Revised Rad Rule |
| Jan 1, 2019 | Mar 31, 2019 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | Radionuclides and Revised Rad Rule |
| Jan 1, 2019 | Mar 31, 2019 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Mar 31, 2019 | Radionuclides and Revised Rad Rule |
| Apr 1, 2006 | Jun 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Jun 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Jun 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Jun 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | Total Coliform Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Mar 31, 2000 | Total Coliform Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1999 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1999 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1999 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1999 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1999 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Aug 31, 1999 | Total Coliform Rule |
| Jan 1, 1996 | Dec 31, 1996 | DICHLOROMETHANE | MCL | Yes | No | 6.3 | 0.005 mg/L | 5 | Resolved | Dec 31, 1996 | Volatile Organic Chemicals |
| Jan 1, 1996 | Dec 31, 1996 | DICHLOROMETHANE | MCL | Yes | No | 6.3 | 0.005 mg/L | 5 | Resolved | Dec 31, 1996 | Volatile Organic Chemicals |
| Jan 1, 1996 | Dec 31, 1996 | DICHLOROMETHANE | MCL | Yes | No | 6.3 | 0.005 mg/L | 5 | Resolved | Dec 31, 1996 | Volatile Organic Chemicals |
| Jan 1, 1996 | Dec 31, 1996 | DICHLOROMETHANE | MCL | Yes | No | 6.3 | 0.005 mg/L | 5 | Resolved | Dec 31, 1996 | Volatile Organic Chemicals |
| Jul 1, 1995 | Sep 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | Total Coliform Rule |
| Jul 1, 1995 | Sep 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | Total Coliform Rule |
| Jul 1, 1995 | Sep 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | Total Coliform Rule |
| Jul 1, 1995 | Sep 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | Total Coliform Rule |
| Jul 1, 1995 | Sep 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | Total Coliform Rule |
| Apr 1, 1994 | Jun 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1994 | Total Coliform Rule |
| Apr 1, 1994 | Jun 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1994 | Total Coliform Rule |
| Apr 1, 1994 | Jun 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1994 | Total Coliform Rule |
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.