Is AQUARION-BUTTERNUT required to publish a Consumer Confidence Report?

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

AQUARION-BUTTERNUT’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 · Fairfield County

AQUARION-BUTTERNUT Water System

Consumer Confidence Report status

AQUARION-BUTTERNUT 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-BUTTERNUT.

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): CT0180021
System type: Community Water System
Population served: 124
Service connections: 31
Ownership: privately owned
Water source: groundwater (wells)

AQUARION-BUTTERNUT is one of 799 community water systems in Connecticut in the 500 or fewer people size category, serving 124 people from groundwater.

As of August 1, 2026, its federal record holds 4 entries between 2012 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 4, 1 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 Total Coliform Rules, the Lead and Copper Rule, and the Consumer Confidence Rule.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2021 – January 20, 2022
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2018 – July 9, 2018
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2012 – October 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2012 – July 31, 2012
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 30, 2021 – January 20, 2022	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2018 – July 9, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2012 – October 31, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2012 – July 31, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

November 2, 2012State Public Notification received3 linked violations
August 31, 2012State Compliance achieved1 linked violation
August 15, 2012State Violation/Reminder Notice1 linked violation
August 15, 2012State Public Notification requested1 linked violation
November 8, 2004State Violation/Reminder Notice10 linked violations
February 15, 1995State Public Notification received60 linked violations
January 18, 1995State Public Notification requested4 linked violations
September 17, 1994State Public Notification received6 linked violations
July 15, 1994State Violation/Reminder Notice4 linked violations

Common questions

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