MARS, PA · Butler County

MUNICIPAL WATER AUTH ADAMS TWP 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 Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.

System facts

System ID (PWSID): PA5100141
System type: Community Water System
Population served: 8,700
Service connections: 5,359
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
June 11, 2024 – August 6, 2024
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2023 – November 30, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2023 – May 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2020 – June 30, 2020
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2020 – March 31, 2020
Resolved
Treatment Technique, Level 1 Assessment (RTCR)
Health-based
Revised Total Coliform Rule
April 15, 2019 – June 28, 2019
Resolved
Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR)
—
Revised Total Coliform Rule
April 15, 2019 – December 13, 2019
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
February 1, 2017 – February 28, 2017
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2017 – March 31, 2017
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2014 – December 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2007 – July 31, 2007
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
December 1, 2006 – December 31, 2006
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
November 1, 2006 – November 30, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2006 – December 31, 2006
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
August 1, 2006 – August 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2006 – September 22, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2005 – September 30, 2005
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
September 1, 2005 – September 30, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
August 1, 2005 – August 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2005 – September 30, 2005
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2005 – September 30, 2005
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
June 1, 2005 – June 30, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2005 – May 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2005 – June 30, 2005
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
November 1, 2004 – November 30, 2004
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2004 – December 31, 2004
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
October 1, 2004 – October 31, 2004
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
September 1, 2004 – September 30, 2004
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
August 1, 2004 – August 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2004 – September 30, 2004
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
June 1, 2004 – June 30, 2004
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
May 1, 2004 – May 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2004 – June 30, 2004
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2003 – September 20, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – October 1, 2003
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
September 1, 2000 – September 30, 2000
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
August 1, 2000 – August 31, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2000 – August 31, 2000
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
June 11, 2024 – August 6, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2023 – November 30, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
May 1, 2023 – May 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2020 – June 30, 2020	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 15, 2019 – June 28, 2019	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
April 15, 2019 – December 13, 2019	Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR)	Revised Total Coliform Rule	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2007 – December 31, 2007	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2007 – July 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 2006 – December 31, 2006	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
November 1, 2006 – November 30, 2006	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2006 – August 31, 2006	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
July 1, 2006 – September 22, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
September 1, 2005 – September 30, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2005 – September 30, 2005	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
August 1, 2005 – August 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2005 – August 31, 2005	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring and Reporting (DBP)	TTHM	—	Resolved
June 1, 2005 – June 30, 2005	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
May 1, 2005 – May 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
November 1, 2004 – November 30, 2004	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
October 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2004 – October 31, 2004	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
September 1, 2004 – September 30, 2004	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
August 1, 2004 – August 31, 2004	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
June 1, 2004 – June 30, 2004	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
May 1, 2004 – May 31, 2004	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2003 – September 20, 2005	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2003 – October 1, 2003	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
September 1, 2000 – September 30, 2000	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
August 1, 2000 – August 31, 2000	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
August 1, 2000 – August 31, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

August 6, 2024State Public Notification received1 linked violation
August 6, 2024State Public Notification requested1 linked violation
August 6, 2024State Violation/Reminder Notice1 linked violation
August 6, 2024State Compliance achieved1 linked violation
January 29, 2024State Compliance achieved1 linked violation
November 30, 2023State Compliance achieved1 linked violation
November 30, 2023State Violation/Reminder Notice1 linked violation
July 7, 2023State Violation/Reminder Notice1 linked violation
July 7, 2023State Public Notification requested1 linked violation
August 5, 2020State Public Notification requested1 linked violation
August 5, 2020State Compliance achieved1 linked violation
August 5, 2020State Violation/Reminder Notice1 linked violation
May 14, 2020State Public Notification requested1 linked violation
May 14, 2020State Compliance achieved1 linked violation
May 14, 2020State Violation/Reminder Notice1 linked violation
December 13, 2019State Compliance achieved1 linked violation
December 13, 2019State Public Notification received1 linked violation
June 28, 2019State Public Notification received1 linked violation
June 28, 2019State Compliance achieved1 linked violation
June 14, 2019State Compliance achieved1 linked violation
June 13, 2019State Public Notification requested2 linked violations
June 13, 2019State Violation/Reminder Notice1 linked violation
June 13, 2019State Public Notification requested1 linked violation
June 13, 2019State Formal Notice of Violation issued1 linked violation
June 13, 2019State Formal Notice of Violation issued2 linked violations
April 25, 2017State Compliance achieved2 linked violations
April 25, 2017State Violation/Reminder Notice2 linked violations
June 30, 2015State Public Notification received1 linked violation
January 23, 2015State Violation/Reminder Notice1 linked violation
January 23, 2015State Compliance achieved1 linked violation
January 23, 2015State Public Notification requested1 linked violation
February 4, 2008State Violation/Reminder Notice2 linked violations
February 4, 2008State Compliance achieved2 linked violations
October 11, 2007State Public Notification received1 linked violation
October 11, 2007State Public Notification requested1 linked violation
October 11, 2007State Formal Notice of Violation issued1 linked violation
October 11, 2007State Compliance achieved1 linked violation
February 27, 2007State Compliance achieved3 linked violations
February 27, 2007State Violation/Reminder Notice3 linked violations
September 22, 2006State Compliance achieved3 linked violations
September 22, 2006State Violation/Reminder Notice3 linked violations
November 14, 2005State Consent Decree/Judgement3 linked violations
November 14, 2005State Compliance achieved3 linked violations
November 14, 2005State Violation/Reminder Notice3 linked violations
October 18, 2005State Consent Decree/Judgement5 linked violations
October 18, 2005State Compliance achieved5 linked violations
October 18, 2005State Violation/Reminder Notice5 linked violations
September 20, 2005State Consent Decree/Judgement1 linked violation
September 20, 2005State Compliance achieved1 linked violation
September 20, 2005State Violation/Reminder Notice1 linked violation
March 9, 2005State Compliance achieved9 linked violations
March 9, 2005State Violation/Reminder Notice9 linked violations
October 1, 2003State Consent Decree/Judgement1 linked violation
October 1, 2003State Compliance achieved1 linked violation
October 1, 2003State Violation/Reminder Notice1 linked violation

Contact

MUNICIPAL WATER AUTH ADAMS TWP

724-625-3166

MARS, PA 16046