Is AQUARION-PLAINVILLE REGIONAL required to publish a Consumer Confidence Report?

Yes. AQUARION-PLAINVILLE REGIONAL 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 AQUARION-PLAINVILLE REGIONAL’s next Consumer Confidence Report due?

AQUARION-PLAINVILLE REGIONAL’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

SHELTON, CT · Hartford County

AQUARION-PLAINVILLE REGIONAL Water System

Consumer Confidence Report status

AQUARION-PLAINVILLE REGIONAL 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 no open violations for AQUARION-PLAINVILLE REGIONAL.

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): CT1100011
System type: Community Water System
Population served: 18,231
Service connections: 6,622
Ownership: privately owned
Water source: groundwater (wells)

AQUARION-PLAINVILLE REGIONAL is one of 35 community water systems in Connecticut in the 10,001 to 100,000 people size category, serving 18,231 people from groundwater.

As of August 1, 2026, its federal record holds 29 entries between 1988 and 2026, all of which EPA lists as closed.

Of the 29, 21 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 the Radionuclides and Revised Rad Rule, the Consumer Confidence Rule, and inorganic chemicals.

Violation history

Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
February 1, 2026 – February 28, 2026
Archived
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
August 10, 2021 – July 6, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – July 6, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – July 6, 2021
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2019 – December 31, 2021
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2019 – December 31, 2021
Archived
Monitoring, Regular
—
Arsenic
January 1, 2019 – December 31, 2021
Archived
Monitoring, Regular
—
Cadmium
January 1, 2019 – December 31, 2021
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – July 6, 2016
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2016 – March 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2016 – March 31, 2016
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – July 3, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2014 – June 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 2013 – February 28, 2013
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2011 – December 31, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – August 2, 2010
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – August 8, 2006
Resolved
Monitoring, Regular
—
ManMade Beta Particle and Photon Emitter
January 1, 2006 – March 31, 2006
Resolved
Monitoring, Regular
—
ManMade Beta Particle and Photon Emitter
January 1, 2006 – March 31, 2006
Resolved
Monitoring, Regular
—
Gross Beta Particle Activity
January 1, 2006 – March 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Benzene
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1988 – March 31, 1988
Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
February 1, 2026 – February 28, 2026	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Archived
August 10, 2021 – July 6, 2021	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2021 – July 6, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2020 – July 6, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2019 – December 31, 2021	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2019 – December 31, 2021	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2019 – December 31, 2021	Monitoring, Regular	Arsenic	—	Archived
January 1, 2019 – December 31, 2021	Monitoring, Regular	Cadmium	—	Archived
July 1, 2016 – July 6, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2016 – March 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2016 – March 31, 2016	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2014 – July 3, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
February 1, 2013 – February 28, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2010 – August 2, 2010	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2006 – August 8, 2006	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring, Regular	ManMade Beta Particle and Photon Emitter	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring, Regular	ManMade Beta Particle and Photon Emitter	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring, Regular	Gross Beta Particle Activity	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Benzene	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	p-Dichlorobenzene	—	Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is AQUARION-PLAINVILLE REGIONAL required to publish a Consumer Confidence Report?: Yes. AQUARION-PLAINVILLE REGIONAL 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 AQUARION-PLAINVILLE REGIONAL’s next Consumer Confidence Report due?: AQUARION-PLAINVILLE REGIONAL’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does AQUARION-PLAINVILLE REGIONAL have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for AQUARION-PLAINVILLE REGIONAL.
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

ULRICH, ROBERT J.

203-926-4320

SHELTON, CT 06484