LOCK HAVEN, PA · Clinton County

CITY OF LOCK HAVEN WATER DEPT Water System

Current status

2 items on record are open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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 Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.

System facts

System ID (PWSID): PA4180048
System type: Community Water System
Population served: 10,000
Service connections: 3,200
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
TTHM
October 1, 2025 – December 31, 2025
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2025
Unaddressed
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2025 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2025 – September 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2025 – September 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2025 – June 30, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2025 – June 30, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2025 – March 31, 2025
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2025 – March 31, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2024 – December 31, 2024
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2024 – December 31, 2024
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
Archived
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2024 – September 30, 2024
Archived
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
June 11, 2024
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
January 11, 2024 – February 23, 2024
Resolved
Monitoring, Regular
—
Asbestos
January 1, 2022 – December 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
August 1, 2020 – August 31, 2020
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2020 – August 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2020 – March 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2020 – March 31, 2020
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2019 – November 30, 2019
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 26, 2016 – October 30, 2019
Resolved
Treatment Technique, Level 1 Assessment (RTCR)
Health-based
Revised Total Coliform Rule
October 16, 2016 – October 30, 2019
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2015 – November 30, 2015
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2015 – December 31, 2015
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 11, 2014 – January 4, 2017
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2014 – May 31, 2014
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2012 – May 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2012 – June 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2011 – August 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2011 – March 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2010 – September 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2009 – September 30, 2009
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2008 – September 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2008 – September 30, 2008
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 11, 2007 – December 12, 2007
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2007 – October 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2006 – September 30, 2006
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – September 29, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2004 – October 27, 2004
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 1999 – July 31, 1999
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – March 31, 1993
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1992 – July 12, 1993
Resolved
Monitoring, Regular
—
Barium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Mercury
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Fluoride
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Chromium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Selenium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Nitrate
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Arsenic
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Cadmium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Endrin
June 24, 1982 – June 23, 1985
Archived

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
October 1, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
October 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
April 1, 2025 – June 30, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
April 1, 2025 – June 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2025 – March 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2025 – March 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
October 1, 2024 – December 31, 2024	Monitoring and Reporting (DBP)	TTHM	—	Archived
October 1, 2024 – December 31, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	TTHM	—	Archived
June 11, 2024	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Unaddressed
January 11, 2024 – February 23, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Asbestos	—	Resolved
August 1, 2020 – August 31, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2020 – August 31, 2020	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring and Reporting (DBP)	TTHM	—	Resolved
November 1, 2019 – November 30, 2019	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
November 26, 2016 – October 30, 2019	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 16, 2016 – October 30, 2019	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
November 1, 2015 – November 30, 2015	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2015 – December 31, 2015	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 11, 2014 – January 4, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
May 1, 2014 – May 31, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2012 – May 31, 2012	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2012 – June 30, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2011 – August 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – March 31, 2011	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
December 11, 2007 – December 12, 2007	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2007 – October 31, 2007	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2006 – September 30, 2006	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2005 – September 29, 2005	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2004 – October 27, 2004	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 1999 – July 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1992 – July 12, 1993	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
June 25, 1984 – June 24, 1985	Monitoring, Regular	Barium	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Mercury	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Fluoride	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Chromium	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Selenium	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Nitrate	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Arsenic	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Cadmium	—	Archived
June 24, 1982 – June 23, 1985	Monitoring, Regular	Endrin	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

February 11, 2026State Formal Notice of Violation issued2 linked violations
February 11, 2026State Public Notification requested2 linked violations
November 12, 2025State Formal Notice of Violation issued2 linked violations
November 12, 2025State Public Notification requested2 linked violations
November 4, 2025State Public Notification requested1 linked violation
November 4, 2025State Formal Notice of Violation issued1 linked violation
August 7, 2025State Public Notification requested2 linked violations
August 7, 2025State Formal Notice of Violation issued2 linked violations
May 14, 2025State Formal Notice of Violation issued2 linked violations
May 14, 2025State Public Notification requested2 linked violations
April 9, 2025State Public Notification requested1 linked violation
April 9, 2025State Violation/Reminder Notice1 linked violation
February 12, 2025State Formal Notice of Violation issued2 linked violations
February 12, 2025State Public Notification requested2 linked violations
November 12, 2024State Public Notification requested2 linked violations
November 12, 2024State Formal Notice of Violation issued2 linked violations
March 18, 2024State Compliance achieved2 linked violations
March 18, 2024State Compliance achieved1 linked violation
March 18, 2024State Public Notification received1 linked violation
March 12, 2024State Formal Notice of Violation issued2 linked violations
February 23, 2024State Compliance achieved1 linked violation
November 14, 2023State Public Notification requested1 linked violation
November 14, 2023State Formal Notice of Violation issued1 linked violation
February 4, 2021State Compliance achieved4 linked violations
February 4, 2021State Public Notification received2 linked violations
June 5, 2020State Violation/Reminder Notice2 linked violations
June 5, 2020State Violation/Reminder Notice2 linked violations
June 5, 2020State Public Notification requested2 linked violations
June 5, 2020State Public Notification requested2 linked violations
January 21, 2020State Compliance achieved2 linked violations
October 30, 2019State Violation/Reminder Notice2 linked violations
October 30, 2019State Public Notification requested2 linked violations
October 30, 2019State Compliance achieved2 linked violations
October 30, 2019State Public Notification received2 linked violations
May 28, 2019State Violation/Reminder Notice1 linked violation
May 28, 2019State Compliance achieved1 linked violation
May 24, 2019State Public Notification requested1 linked violation
May 24, 2019State Compliance achieved1 linked violation
May 24, 2019State Public Notification received1 linked violation
May 24, 2019State Violation/Reminder Notice1 linked violation
January 4, 2017State Compliance achieved2 linked violations
September 9, 2014State Compliance achieved1 linked violation
June 18, 2013State Compliance achieved2 linked violations
April 27, 2011State Compliance achieved2 linked violations
February 4, 2011State Compliance achieved1 linked violation
December 16, 2010State Compliance achieved1 linked violation
November 30, 2009State Compliance achieved1 linked violation
December 15, 2008State Compliance achieved2 linked violations
December 28, 2007Federal Final Administrative Order issued1 linked violation
December 12, 2007State Public Notification requested1 linked violation
December 12, 2007State Compliance achieved1 linked violation
December 12, 2007State Public Notification received1 linked violation
December 12, 2007State Violation/Reminder Notice1 linked violation
December 3, 2007State Public Notification received1 linked violation
December 3, 2007State Violation/Reminder Notice1 linked violation
December 3, 2007State Compliance achieved1 linked violation
December 3, 2007State Public Notification requested1 linked violation
April 26, 2007State Compliance achieved1 linked violation
September 29, 2005State Consent Decree/Judgement1 linked violation
September 29, 2005State Compliance achieved1 linked violation
September 29, 2005State Violation/Reminder Notice1 linked violation
October 27, 2004State Violation/Reminder Notice1 linked violation
October 27, 2004State Consent Decree/Judgement1 linked violation
October 27, 2004State Compliance achieved1 linked violation
September 5, 1985State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
October 1, 1984State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 30, 1983Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record
May 24, 1983State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
September 30, 1982Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record
September 19, 1981Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record
August 19, 1981State Public Notification requestedgeneral compliance action — not tied to a specific violation on record

Contact

CITY OF LOCK HAVEN WATER DEPT

570-893-5907

LOCK HAVEN, PA 17745