MANCHESTER, CT · New London County

KNOB HILL CONDOMINIUMS Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

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): CT0280051
System type: Community Water System
Population served: 84
Service connections: 28
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2022 – October 3, 2022
Resolved
Monitoring, Regular
—
Selenium
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Nickel
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Mercury
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
CYANIDE
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Chromium
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Cadmium
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Barium
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Arsenic
January 1, 2022 – December 31, 2024
Archived
Monitoring, Regular
—
Fluoride
January 1, 2022 – December 31, 2024
Archived
Reporting, Assessment Forms (RTCR)
—
Revised Total Coliform Rule
August 20, 2021 – February 7, 2022
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 28, 2020 – November 25, 2020
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 28, 2020 – November 25, 2020
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
December 4, 2018 – November 25, 2020
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
December 4, 2018 – November 25, 2020
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
April 1, 2018 – October 17, 2018
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
April 1, 2017 – June 26, 2017
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
LASSO
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Simazine
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Endrin
January 1, 2017 – December 31, 2019
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
July 10, 2016 – November 4, 2016
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2015 – May 9, 2017
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2015 – June 30, 2016
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
August 10, 2009 – October 15, 2009
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
June 21, 2007 – March 19, 2010
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 2007 – February 28, 2007
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 26, 2006 – October 26, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2006 – October 31, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 7, 2003 – November 6, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2003 – November 30, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2003 – October 31, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2002 – September 30, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1994 – September 30, 1994
Resolved
Notification, Public
—
Lead and Copper Rule
March 1, 1994 – March 31, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1991 – June 30, 1991
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 1990 – December 31, 1992
Resolved
Monitoring, Regular
—
Benzene
January 1, 1990 – December 31, 1992
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2022 – October 3, 2022	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2022 – December 31, 2024	Monitoring, Regular	Selenium	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Nickel	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Mercury	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	CYANIDE	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Chromium	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Cadmium	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Barium	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Arsenic	—	Archived
January 1, 2022 – December 31, 2024	Monitoring, Regular	Fluoride	—	Archived
August 20, 2021 – February 7, 2022	Reporting, Assessment Forms (RTCR)	Revised Total Coliform Rule	—	Resolved
July 28, 2020 – November 25, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 28, 2020 – November 25, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
December 4, 2018 – November 25, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
December 4, 2018 – November 25, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
April 1, 2018 – October 17, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
April 1, 2017 – June 26, 2017	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Nitrite	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	LASSO	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Simazine	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Endrin	—	Resolved
July 10, 2016 – November 4, 2016	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
December 30, 2015 – May 9, 2017	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2015 – June 30, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
August 10, 2009 – October 15, 2009	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
June 21, 2007 – March 19, 2010	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
February 1, 2007 – February 28, 2007	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
November 26, 2006 – October 26, 2006	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2006 – October 31, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 7, 2003 – November 6, 2003	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 1, 2003 – November 30, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2003 – October 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2002 – September 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1994 – March 31, 1994	Notification, Public	Lead and Copper Rule	—	Resolved
April 1, 1991 – June 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1990 – December 31, 1992	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 1990 – December 31, 1992	Monitoring, Regular	Benzene	—	Resolved

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

Enforcement actions

February 27, 2025State Public Notification received12 linked violations
February 11, 2025State Public Notification requested12 linked violations
February 11, 2025State Violation/Reminder Notice12 linked violations
October 3, 2022State Compliance achieved1 linked violation
February 8, 2022State Public Notification received1 linked violation
February 7, 2022State Public Notification requested1 linked violation
February 7, 2022State Compliance achieved1 linked violation
February 7, 2022State Violation/Reminder Notice1 linked violation
January 8, 2021State Public Notification received1 linked violation
January 8, 2021State Public Notification received1 linked violation
January 6, 2021State Public Notification requested1 linked violation
January 6, 2021State Violation/Reminder Notice1 linked violation
November 25, 2020State Compliance achieved1 linked violation
November 25, 2020State Compliance achieved3 linked violations
September 25, 2020State Public Notification requested1 linked violation
September 25, 2020State Violation/Reminder Notice1 linked violation
May 8, 2020State Violation/Reminder Notice14 linked violations
May 8, 2020State Public Notification received14 linked violations
February 27, 2020State Compliance achieved14 linked violations
February 28, 2019State Public Notification received2 linked violations
February 25, 2019State Violation/Reminder Notice2 linked violations
February 25, 2019State Public Notification requested2 linked violations
October 17, 2018State Compliance achieved1 linked violation
October 3, 2018State Violation/Reminder Notice1 linked violation
March 12, 2018State Compliance achieved2 linked violations
March 6, 2018State Violation/Reminder Notice2 linked violations
January 29, 2018State Public Notification received1 linked violation
June 29, 2017State Violation/Reminder Notice1 linked violation
June 29, 2017State Public Notification requested1 linked violation
June 26, 2017State Compliance achieved1 linked violation
June 14, 2017State Violation/Reminder Notice1 linked violation
May 9, 2017State Violation/Reminder Notice1 linked violation
May 9, 2017State Compliance achieved1 linked violation
November 4, 2016State Compliance achieved1 linked violation
July 19, 2016State Public Notification received1 linked violation
June 30, 2016State Compliance achieved1 linked violation
June 24, 2016State Public Notification requested1 linked violation
June 24, 2016State Violation/Reminder Notice1 linked violation
March 19, 2010State Public Notification received2 linked violations
March 19, 2010State Compliance achieved2 linked violations
October 15, 2009State Compliance achieved1 linked violation
October 7, 2009State Violation/Reminder Notice1 linked violation
January 28, 2008State Public Notification received2 linked violations
January 28, 2008State Compliance achieved1 linked violation
January 18, 2008State Violation/Reminder Notice1 linked violation
October 10, 2007State Public Notification requested1 linked violation
October 10, 2007State Violation/Reminder Notice1 linked violation
May 21, 2007State Violation/Reminder Notice4 linked violations
February 13, 2004State Public Notification received2 linked violations
February 13, 2004State Public Notification received2 linked violations
November 6, 2003State Public Notification requested2 linked violations
October 30, 2002State Bilateral Compliance Agreement signed2 linked violations
October 21, 2002State Public Notification received2 linked violations
June 30, 1996State Compliance achieved1 linked violation
January 20, 1994State Violation/Reminder Notice2 linked violations
January 20, 1994State Public Notification requested4 linked violations
March 14, 1993State Compliance achieved13 linked violations
February 25, 1993State Public Notification received11 linked violations
February 23, 1993State Compliance achieved14 linked violations
January 25, 1993State Public Notification requested27 linked violations
December 31, 1991State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 15, 1991State Public Notification requested2 linked violations
July 15, 1991State Violation/Reminder Notice4 linked violations
April 1, 1991State Compliance achievedgeneral compliance action — not tied to a specific violation on record

Contact

CYR, BARRY A.

860-645-1776

MANCHESTER, CT 06042