TWIN ROCKS, PA · Cambria County

BLACKLICK VALLEY MUNI AUTH 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): PA4110077
System type: Community Water System
Population served: 1,650
Service connections: 763
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
October 11, 2025 – October 14, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2024 – October 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2023 – July 31, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 10, 2021
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
October 28, 2020 – January 13, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2020 – December 31, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 10, 2020 – August 6, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2020 – September 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2020 – March 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2019 – December 31, 2019
Resolved
Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR)
—
Revised Total Coliform Rule
November 12, 2018 – March 20, 2019
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 11, 2016 – May 10, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2016 – June 30, 2016
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 10, 2016 – February 8, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2016 – March 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2011 – June 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2010 – September 30, 2010
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 10, 2010 – February 24, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2010 – March 31, 2010
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 10, 2009
Unaddressed
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2008 – September 30, 2008
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2008 – June 30, 2008
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
September 1, 2007 – September 30, 2007
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 10, 2005 – March 3, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 10, 2005 – March 3, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2005 – September 30, 2005
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 11, 2005 – March 3, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2005 – June 30, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2005 – June 30, 2005
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2005 – February 28, 2005
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2005 – January 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2005 – March 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2005 – March 31, 2005
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2004 – December 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2004 – December 31, 2004
Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
October 11, 2025 – October 14, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2024 – October 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2023 – July 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
February 10, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
October 28, 2020 – January 13, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
August 10, 2020 – August 6, 2020	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
November 12, 2018 – March 20, 2019	Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR)	Revised Total Coliform Rule	—	Resolved
May 11, 2016 – May 10, 2016	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
February 10, 2016 – February 8, 2016	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
February 10, 2010 – February 24, 2010	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
November 10, 2009	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
September 1, 2007 – September 30, 2007	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
November 10, 2005 – March 3, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
August 10, 2005 – March 3, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2005 – September 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
May 11, 2005 – March 3, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
February 1, 2005 – February 28, 2005	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2005 – January 31, 2005	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
December 1, 2004 – December 31, 2004	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 16, 2026State Compliance achieved1 linked violation
January 16, 2026State Compliance achieved1 linked violation
January 16, 2026State Public Notification received1 linked violation
January 8, 2026State Violation/Reminder Notice1 linked violation
January 8, 2026State Public Notification requested1 linked violation
October 15, 2025State Public Notification received1 linked violation
October 15, 2025State Compliance achieved1 linked violation
October 14, 2025State Violation/Reminder Notice1 linked violation
October 14, 2025State Public Notification received1 linked violation
October 14, 2025State Public Notification requested1 linked violation
October 14, 2025State Compliance achieved1 linked violation
October 9, 2025State Formal Notice of Violation issued1 linked violation
October 9, 2025State Site Visit for enforcement purposes1 linked violation
October 9, 2025State Public Notification requested1 linked violation
March 3, 2025State Compliance achieved2 linked violations
March 3, 2025State Public Notification received1 linked violation
March 3, 2025State Compliance achieved10 linked violations
March 3, 2025State Other7 linked violations
December 20, 2024State Public Notification received1 linked violation
December 10, 2024State Public Notification requested1 linked violation
December 10, 2024State Formal Notice of Violation issued1 linked violation
January 26, 2024State Compliance achieved1 linked violation
January 26, 2024State Public Notification received1 linked violation
September 11, 2023State Formal Notice of Violation issued1 linked violation
September 11, 2023State Public Notification requested1 linked violation
November 18, 2021State Public Notification received1 linked violation
June 23, 2021State Compliance achieved1 linked violation
June 23, 2021State Compliance achieved1 linked violation
June 23, 2021State Compliance achieved1 linked violation
May 14, 2021State Public Notification received1 linked violation
May 14, 2021State Public Notification received1 linked violation
May 14, 2021State Public Notification received1 linked violation
May 14, 2021State Compliance achieved1 linked violation
May 14, 2021State Compliance achieved1 linked violation
May 14, 2021State Public Notification received1 linked violation
May 14, 2021State Public Notification received1 linked violation
February 10, 2021State Formal Notice of Violation issued1 linked violation
February 10, 2021State Public Notification requested1 linked violation
February 10, 2021State Public Notification requested1 linked violation
February 10, 2021State Formal Notice of Violation issued1 linked violation
January 28, 2021State Public Notification requested1 linked violation
January 28, 2021State Formal Notice of Violation issued1 linked violation
January 13, 2021State Compliance achieved1 linked violation
October 29, 2020State Public Notification received2 linked violations
October 28, 2020State Public Notification requested2 linked violations
October 28, 2020State Formal Notice of Violation issued2 linked violations
August 6, 2020State Compliance achieved1 linked violation
August 6, 2020State Public Notification received1 linked violation
July 29, 2020State Formal Notice of Violation issued1 linked violation
July 29, 2020State Formal Notice of Violation issued1 linked violation
July 29, 2020State Public Notification requested1 linked violation
July 29, 2020State Public Notification requested1 linked violation
July 29, 2020State Public Notification requested1 linked violation
July 29, 2020State Formal Notice of Violation issued1 linked violation
July 6, 2020State Public Notification received1 linked violation
May 6, 2020State Public Notification received1 linked violation
May 5, 2020State Public Notification requested1 linked violation
May 5, 2020State Formal Notice of Violation issued1 linked violation
January 31, 2020State Public Notification received1 linked violation
January 27, 2020State Public Notification requested1 linked violation
January 27, 2020State Formal Notice of Violation issued1 linked violation
March 20, 2019State Compliance achieved1 linked violation
March 20, 2019State Compliance achieved1 linked violation
January 2, 2019State Violation/Reminder Notice1 linked violation
January 2, 2019State Violation/Reminder Notice1 linked violation
March 5, 2018State Public Notification received1 linked violation
July 29, 2016State Compliance achieved1 linked violation
July 29, 2016State Other1 linked violation
July 29, 2016State Formal Notice of Violation issued1 linked violation
July 29, 2016State Formal Notice of Violation issued1 linked violation
May 10, 2016State Formal Notice of Violation issued1 linked violation
May 10, 2016State Violation/Reminder Notice1 linked violation
May 10, 2016State Violation/Reminder Notice1 linked violation
May 10, 2016State Public Notification received1 linked violation
May 10, 2016State Compliance achieved2 linked violations
May 10, 2016State Public Notification received1 linked violation
May 10, 2016State Formal Notice of Violation issued1 linked violation
February 8, 2016State Compliance achieved2 linked violations
February 8, 2016State Public Notification received2 linked violations
February 2, 2016State Formal Notice of Violation issued2 linked violations
February 2, 2016State Compliance achieved2 linked violations
February 2, 2016State Violation/Reminder Notice2 linked violations
February 7, 2012State Other2 linked violations
February 7, 2012State Public Notification received2 linked violations
February 7, 2012State Administrative/Compliance Order without penalty issued2 linked violations
February 7, 2012State Compliance achieved4 linked violations
August 16, 2011State Violation/Reminder Notice1 linked violation
August 16, 2011State Compliance achieved1 linked violation
August 16, 2011State Public Notification received1 linked violation
August 16, 2011State Public Notification requested1 linked violation
July 8, 2011State Compliance achieved1 linked violation
May 31, 2011State Public Notification requested1 linked violation
May 31, 2011State Violation/Reminder Notice1 linked violation
March 18, 2011State Violation/Reminder Notice1 linked violation
March 18, 2011State Compliance achieved1 linked violation
June 9, 2010State Administrative/Compliance Order without penalty issued2 linked violations
April 28, 2010State Public Notification received1 linked violation
April 28, 2010State Violation/Reminder Notice1 linked violation
April 14, 2010State Public Notification requested1 linked violation
April 14, 2010State Public Notification received1 linked violation
February 24, 2010State Compliance achieved1 linked violation
February 24, 2010State Other1 linked violation
February 17, 2010State Public Notification received1 linked violation
February 17, 2010State Violation/Reminder Notice1 linked violation
November 20, 2009State Public Notification received1 linked violation
November 20, 2009State Technical Assistance Visit1 linked violation
November 20, 2009State Violation/Reminder Notice1 linked violation
November 20, 2009State Public Notification requested1 linked violation
November 13, 2008State Public Notification received1 linked violation
November 13, 2008State Public Notification requested1 linked violation
November 13, 2008State Violation/Reminder Notice1 linked violation
October 1, 2008State Violation/Reminder Notice1 linked violation
October 1, 2008State Public Notification received1 linked violation
October 1, 2008State Public Notification requested1 linked violation
July 14, 2008State Violation/Reminder Notice1 linked violation
July 14, 2008State Violation/Reminder Notice1 linked violation
October 30, 2007State Compliance achieved1 linked violation
October 30, 2007State Compliance achieved1 linked violation
October 30, 2007State Technical Assistance Visit1 linked violation
October 30, 2007State Technical Assistance Visit1 linked violation
October 30, 2007State Technical Assistance Visit1 linked violation
October 30, 2007State Violation/Reminder Notice1 linked violation
October 30, 2007State Violation/Reminder Notice1 linked violation
October 30, 2007State Violation/Reminder Notice1 linked violation
October 30, 2007State Other1 linked violation
April 11, 2006State Compliance achieved13 linked violations
April 11, 2006State Violation/Reminder Notice7 linked violations
September 13, 2005State Technical Assistance Visit1 linked violation

Contact

BLACKLICK VALLEY MUNI AUTH

814-749-8763

TWIN ROCKS, PA 15960