CLINTON, CT · Hartford County
CTWC - NORTHERN REG-WESTERN SYSTEM Water System
Consumer Confidence Report status
CTWC - NORTHERN REG-WESTERN SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show 1 item for CTWC - NORTHERN REG-WESTERN SYSTEM that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Connecticut’s official records. Always confirm current status with Connecticut before making decisions based on this information.
System facts
- System ID (PWSID)
- CT0473011
- System type
- Community Water System
- Population served
- 101,313
- Service connections
- 37,354
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
CTWC - NORTHERN REG-WESTERN SYSTEM is among the 6 largest community water systems in Connecticut, serving 101,313 people from surface water.
As of August 1, 2026, its federal record holds 48 entries between 2005 and 2024, of which 1 remains open; none are health-based.
Of the 48, 46 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, synthetic organic chemicals, and the Radionuclides and Revised Rad Rule.
Violation history
Public Notification Violation without NPDWR Violation
—Public Notice
December 14, 2024 – December 14, 2024
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
June 8, 2018
UnaddressedMonitoring, Source Water (GWR)
—E. COLI
July 16, 2014 – December 3, 2014
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
July 1, 2014 – July 31, 2014
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Combined Radium (-226 and -228)
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Combined Uranium
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Styrene
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Toluene
January 1, 2014 – December 31, 2016
ResolvedMonitoring, Regular
—Combined Radium (-226 and -228)
July 1, 2012 – September 30, 2012
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 2012 – September 30, 2012
ResolvedMonitoring, Regular
—o-Dichlorobenzene
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—1,2-Dichloropropane
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—Combined Uranium
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—Gross Beta Particle Activity
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—Benzene
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—CHLOROBENZENE
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—Vinyl chloride
April 1, 2007 – June 30, 2007
ResolvedMonitoring, Regular
—Trichloroethylene
April 1, 2007 – June 30, 2007
ResolvedMonitoring, Regular
—Nitrate
July 1, 2006 – September 30, 2006
ResolvedMonitoring, Regular
—Tetrachloroethylene
July 1, 2006 – September 30, 2006
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
July 1, 2006 – September 30, 2006
ResolvedMonitoring, Regular
—Nitrate
July 1, 2006 – July 31, 2006
ResolvedMonitoring, Regular
—Barium
January 1, 2006 – July 23, 2008
ResolvedMonitoring, Regular
—Fluoride
January 1, 2006 – July 23, 2008
ResolvedMonitoring, Regular
—Arsenic
January 1, 2006 – July 23, 2008
ResolvedMonitoring, Regular
—Fluoride
January 1, 2006 – July 23, 2008
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Atrazine
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Aldicarb sulfoxide
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Diquat
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Dalapon
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Chlordane
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—LASSO
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Aldicarb sulfone
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Aldicarb sulfoxide
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Simazine
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2005 – December 31, 2007
Resolved
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| December 14, 2024 – December 14, 2024 | Public Notification Violation without NPDWR Violation | Public Notice | — | Resolved |
| June 8, 2018 | Public Notification Violation for NPDWR Violation | Public Notice | — | Unaddressed |
| July 16, 2014 – December 3, 2014 | Monitoring, Source Water (GWR) | E. COLI | — | Resolved |
| July 1, 2014 – July 31, 2014 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | Combined Uranium | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2014 – December 31, 2016 | Monitoring, Regular | Toluene | — | Resolved |
| July 1, 2012 – September 30, 2012 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| July 1, 2012 – September 30, 2012 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | Combined Uranium | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | Gross Beta Particle Activity | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | Benzene | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| April 1, 2007 – June 30, 2007 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| April 1, 2007 – June 30, 2007 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| July 1, 2006 – September 30, 2006 | Monitoring, Regular | Nitrate | — | Resolved |
| July 1, 2006 – September 30, 2006 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| July 1, 2006 – September 30, 2006 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| July 1, 2006 – July 31, 2006 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2006 – July 23, 2008 | Monitoring, Regular | Barium | — | Resolved |
| January 1, 2006 – July 23, 2008 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 2006 – July 23, 2008 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 2006 – July 23, 2008 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Aldicarb sulfoxide | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | LASSO | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Aldicarb sulfone | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Aldicarb sulfoxide | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is CTWC - NORTHERN REG-WESTERN SYSTEM required to publish a Consumer Confidence Report?
- Yes. CTWC - NORTHERN REG-WESTERN SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CTWC - NORTHERN REG-WESTERN SYSTEM’s next Consumer Confidence Report due?
- CTWC - NORTHERN REG-WESTERN SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CTWC - NORTHERN REG-WESTERN SYSTEM have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for CTWC - NORTHERN REG-WESTERN SYSTEM that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
LOWRY, PAUL C.
860-944-9655
CLINTON, CT 06413