SHELTON, CT · Fairfield County
AQUARION-RIDGEFIELD KNOLLS Water System
Consumer Confidence Report status
AQUARION-RIDGEFIELD KNOLLS 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 AQUARION-RIDGEFIELD KNOLLS 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)
- CT1180021
- System type
- Community Water System
- Population served
- 958
- Service connections
- 240
- Ownership
- privately owned
- Water source
- groundwater (wells)
AQUARION-RIDGEFIELD KNOLLS is one of 84 community water systems in Connecticut in the 501 to 3,300 people size category, serving 958 people from groundwater.
As of August 1, 2026, its federal record holds 12 entries between 1991 and 2021, of which 1 remains open; none are health-based.
Of the 12, 5 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 21, 2022
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2018 – July 9, 2018
ResolvedLead Consumer Notice
—Lead and Copper Rule
December 30, 2015
UnaddressedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
August 10, 2004 – November 15, 2004
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2004 – June 22, 2004
ResolvedMonitoring, Repeat Major (TCR)
—Coliform (TCR)
November 1, 2003 – November 30, 2003
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 2003 – November 30, 2003
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 2002 – November 30, 2002
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
July 1, 2002 – July 31, 2002
ResolvedNotification, State
—Coliform (TCR)
June 1, 1995 – June 30, 1995
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
June 1, 1995 – June 30, 1995
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
July 1, 1991 – September 30, 1991
Resolved
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| December 30, 2021 – January 21, 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 |
| December 30, 2015 | Lead Consumer Notice | Lead and Copper Rule | — | Unaddressed |
| August 10, 2004 – November 15, 2004 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| January 1, 2004 – June 22, 2004 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| November 1, 2003 – November 30, 2003 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 2003 – November 30, 2003 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| November 1, 2002 – November 30, 2002 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| July 1, 2002 – July 31, 2002 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| June 1, 1995 – June 30, 1995 | Notification, State | Coliform (TCR) | — | Resolved |
| June 1, 1995 – June 30, 1995 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| July 1, 1991 – September 30, 1991 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
Enforcement actions
- January 16, 2019State Violation/Reminder Notice2 linked violations
- July 9, 2018State Compliance achieved1 linked violation
- April 24, 2009State Public Notification received1 linked violation
- March 17, 2009State Public Notification requested1 linked violation
- March 17, 2009State Violation/Reminder Notice1 linked violation
- January 12, 2009State Compliance achieved1 linked violation
- April 3, 2008State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- January 18, 2008State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- December 31, 2006State Compliance achieved1 linked violation
- July 1, 2004State Compliance achieved2 linked violations
- June 22, 2004State Compliance achieved1 linked violation
- June 21, 2004State Administrative/Compliance Order with penalty issued1 linked violation
- June 21, 2004State Public Notification requested1 linked violation
- June 15, 2004State Compliance achieved1 linked violation
- November 21, 2003State Public Notification requested2 linked violations
- November 21, 2003State Public Notification received1 linked violation
- July 21, 2003State Violation/Reminder Notice1 linked violation
- June 30, 2003State Compliance achieved6 linked violations
- November 18, 2002State Violation/Reminder Notice1 linked violation
- November 18, 2002State Public Notification requested1 linked violation
- September 12, 2002State Public Notification received2 linked violations
- September 11, 2002State Violation/Reminder Notice3 linked violations
- September 11, 2002State Public Notification requested2 linked violations
- August 5, 2002State Violation/Reminder Notice2 linked violations
- March 31, 1997State Compliance achieved1 linked violation
- March 11, 1994State Compliance achieved37 linked violations
- February 4, 1994State Public Notification received46 linked violations
- January 19, 1994State Public Notification requested27 linked violations
- March 31, 1987State Compliance achievedgeneral compliance action — not tied to a specific violation on record
Common questions
Is AQUARION-RIDGEFIELD KNOLLS required to publish a Consumer Confidence Report?
- Yes. AQUARION-RIDGEFIELD KNOLLS 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-RIDGEFIELD KNOLLS’s next Consumer Confidence Report due?
- AQUARION-RIDGEFIELD KNOLLS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does AQUARION-RIDGEFIELD KNOLLS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for AQUARION-RIDGEFIELD KNOLLS 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
ULRICH, ROBERT J.
203-926-4320
SHELTON, CT 06484