Drinking Water Compliance OS

CORNWALL BRIDGE, CT · Litchfield County

CORNWALL WATER COMPANY Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of June 9, 2025. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Litchfield County, CT.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
CT0311011
System type
Community Water System
Population served
48
Service connections
11
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    August 10, 2025 – June 9, 2025

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2025 – June 9, 2025

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    July 1, 2025 – June 9, 2025

    Archived
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    January 1, 2025 – June 9, 2025

    Archived
  • LSL Reporting

    LEAD AND COPPER RULE REVISIONS

    October 17, 2024 – June 9, 2025

    Archived
  • LSL Inventory

    Health-based

    LEAD AND COPPER RULE REVISIONS

    October 17, 2024 – June 9, 2025

    Archived
  • Lead Consumer Notice

    Lead and Copper Rule

    September 29, 2024 – June 9, 2025

    Archived
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    August 10, 2024 – June 9, 2025

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2024 – June 9, 2025

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    May 16, 2024 – June 26, 2024

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    May 16, 2024 – June 26, 2024

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    May 16, 2024 – June 26, 2024

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    March 31, 2024 – June 9, 2025

    Archived
  • Monitoring, Regular

    Nitrite

    January 1, 2024 – December 31, 2024

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2024 – December 31, 2024

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    December 2, 2023 – June 26, 2024

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    December 2, 2023 – June 26, 2024

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    July 1, 2023 – December 31, 2023

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    April 8, 2023 – June 26, 2024

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    January 20, 2023 – June 26, 2024

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2023 – June 9, 2025

    Archived
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    Styrene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    Toluene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    Benzene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2023 – June 9, 2025

    Archived
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2023 – June 9, 2025

    Archived
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    April 23, 2022 – June 9, 2025

    Archived
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    April 1, 2022 – April 30, 2022

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    March 23, 2022 – June 26, 2024

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2021 – December 27, 2021

    Resolved
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    April 1, 2021 – April 30, 2021

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Endrin

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Methoxychlor

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Toxaphene

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Dalapon

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Chlordane

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    2,4-D

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Heptachlor

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    LASSO

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Atrazine

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Aldicarb

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Aldicarb sulfone

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Aldicarb sulfoxide

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Dinoseb

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Picloram

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2021 – December 31, 2023

    Archived
  • Monitoring, Regular

    Glyphosate

    January 1, 2021 – December 31, 2023

    Archived
  • Public Notification Violation for NPDWR Violation

    Public Notice

    December 10, 2020 – June 26, 2024

    Resolved
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    August 10, 2020 – June 18, 2020

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Styrene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Toluene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Benzene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Combined Uranium

    January 1, 2020 – December 31, 2022

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2020 – December 31, 2022

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    January 1, 2020 – December 31, 2022

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    Nitrate

    January 1, 2020 – December 31, 2020

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2020 – December 31, 2022

    Archived
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    August 1, 2019 – August 31, 2019

    Resolved
  • Monitoring, Regular

    CYANIDE

    January 1, 2019 – December 31, 2021

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2019 – December 31, 2021

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    June 18, 2018 – February 28, 2019

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    June 18, 2018 – February 28, 2019

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2017 – August 4, 2017

    Resolved
  • Monitoring, Regular

    Nitrite

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2017 – December 31, 2017

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    April 7, 2016 – February 28, 2019

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    December 30, 2015 – March 16, 2020

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Diquat

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Glyphosate

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Aldicarb sulfoxide

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Aldicarb sulfone

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Aldicarb

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    LASSO

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2015 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2015 – December 31, 2017

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    September 29, 2014 – October 1, 2014

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    July 1, 2014 – July 31, 2014

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    November 1, 2013 – November 30, 2013

    Resolved
  • Monitoring, Regular

    Nickel

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Fluoride

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    CYANIDE

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Selenium

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Asbestos

    January 1, 2013 – December 31, 2021

    Archived
  • Monitoring, Regular

    Cadmium

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 2013 – December 31, 2015

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2013 – December 31, 2015

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2012 – August 6, 2012

    Resolved
  • Monitoring, Regular

    Aldicarb sulfoxide

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Glyphosate

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Diquat

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    ETHYLENE DIBROMIDE

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    LASSO

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Aldicarb

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Aldicarb sulfone

    January 1, 2012 – December 31, 2014

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    October 20, 2011 – March 4, 2020

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    August 1, 2011 – August 31, 2011

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    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, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Combined Uranium

    January 1, 2008 – December 31, 2010

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    January 11, 2007 – June 7, 2007

    Resolved
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    August 10, 2005 – July 1, 2005

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    April 1, 2005 – June 30, 2005

    Resolved

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

Enforcement actions

Last known contact on file (system is inactive)

STONE, RICHARD

860-480-4284

CORNWALL BRIDGE, CT 06754-0075