MARS, PA · Butler County

MARS BOROUGH WATER WORKS 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): PA5100049
System type: Community Water System
Population served: 1,956
Service connections: 665
Ownership: local government
Water source: groundwater (wells)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
July 11, 2025 – September 23, 2025
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
June 1, 2024 – June 30, 2024
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
March 1, 2023 – March 31, 2023
Resolved
Monitoring, Regular
—
Radium-226
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Radium-228
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Styrene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Benzene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2020 – December 31, 2020
Resolved
Sample Siting Plan Errors (RTCR)
—
Revised Total Coliform Rule
April 1, 2016 – May 2, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2014 – October 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2014 – November 25, 2014
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2014 – September 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2014 – September 30, 2014
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
May 1, 2012 – May 31, 2012
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 1, 2012 – July 31, 2012
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2012 – February 28, 2012
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Simazine
October 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Endrin
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Methoxychlor
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Diquat
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Endothall
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Glyphosate
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
OXAMYL
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Simazine
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Picloram
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Carbofuran
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
LASSO
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
July 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Chlordane
July 1, 2011 – September 30, 2011
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2008 – October 1, 2008
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 2007 – June 30, 2007
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2007 – June 30, 2007
Resolved
Monitoring, Regular
—
Radium-228
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Radium-226
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Radium-228
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Radium-226
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toluene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Xylenes, Total
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2005 – December 31, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – September 29, 2005
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2004 – September 30, 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 – April 12, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – January 5, 2006
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Styrene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Toluene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Benzene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2000 – June 30, 2004
Resolved
Monitoring, Regular
—
Styrene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Benzene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Toluene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Benzene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Styrene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Toluene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Xylenes, Total
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Toxaphene
June 24, 1982 – June 23, 1985
Archived
Monitoring, Regular
—
2,4-D
June 24, 1982 – June 23, 1985
Archived
Monitoring, Regular
—
2,4,5-TP
June 24, 1982 – June 23, 1985
Archived

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 11, 2025 – September 23, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
June 1, 2024 – June 30, 2024	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
March 1, 2023 – March 31, 2023	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring, Regular	Radium-226	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring, Regular	Combined Uranium	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring, Regular	Radium-228	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Styrene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Benzene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 2016 – May 2, 2016	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2014 – October 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2014 – November 25, 2014	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
May 1, 2012 – May 31, 2012	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
May 1, 2012 – July 31, 2012	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2012 – February 28, 2012	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	Atrazine	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	Simazine	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Endrin	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Methoxychlor	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Diquat	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Endothall	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Glyphosate	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	OXAMYL	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Simazine	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Picloram	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Carbofuran	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	LASSO	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Heptachlor epoxide	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Chlordane	—	Resolved
July 1, 2008 – October 1, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2007 – June 30, 2007	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Radium-228	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Radium-226	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Radium-228	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Radium-226	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Benzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Toluene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2005 – September 29, 2005	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2003 – April 12, 2005	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2003 – January 5, 2006	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Styrene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Toluene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Benzene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2000 – June 30, 2004	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Styrene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Benzene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Toluene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Benzene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Styrene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Toluene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 1993 – December 31, 1993	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
June 24, 1982 – June 23, 1985	Monitoring, Regular	Toxaphene	—	Archived
June 24, 1982 – June 23, 1985	Monitoring, Regular	2,4-D	—	Archived
June 24, 1982 – June 23, 1985	Monitoring, Regular	2,4,5-TP	—	Archived

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

Enforcement actions

September 23, 2025State Public Notification requested1 linked violation
September 23, 2025State Violation/Reminder Notice1 linked violation
September 23, 2025State Compliance achieved1 linked violation
March 14, 2025State Compliance achieved1 linked violation
August 13, 2024State Formal Notice of Violation issued1 linked violation
May 30, 2023State Violation/Reminder Notice1 linked violation
May 30, 2023State Compliance achieved1 linked violation
March 10, 2022State Compliance achieved1 linked violation
February 17, 2022State Compliance achieved3 linked violations
February 9, 2022State Violation/Reminder Notice3 linked violations
January 14, 2022State Compliance achieved20 linked violations
January 14, 2022State Public Notification received20 linked violations
February 12, 2021State Violation/Reminder Notice21 linked violations
February 12, 2021State Public Notification requested20 linked violations
February 12, 2021State Public Notification requested20 linked violations
February 12, 2021State Violation/Reminder Notice21 linked violations
February 22, 2019State Compliance achieved1 linked violation
February 4, 2019State Violation/Reminder Notice1 linked violation
May 2, 2016State Formal Notice of Violation issued1 linked violation
May 2, 2016State Compliance achieved1 linked violation
April 28, 2015State Public Notification received2 linked violations
November 25, 2014State Compliance achieved2 linked violations
November 25, 2014State Violation/Reminder Notice2 linked violations
November 12, 2014State Public Notification requested2 linked violations
November 12, 2014State Violation/Reminder Notice2 linked violations
November 12, 2014State Compliance achieved2 linked violations
July 31, 2012State Public Notification received1 linked violation
July 31, 2012State Compliance achieved1 linked violation
June 25, 2012State Public Notification requested2 linked violations
June 25, 2012State Formal Notice of Violation issued2 linked violations
June 25, 2012State Compliance achieved1 linked violation
February 28, 2012State Compliance achieved1 linked violation
February 28, 2012State Violation/Reminder Notice1 linked violation
February 28, 2012State Public Notification requested1 linked violation
January 18, 2012State Compliance achieved2 linked violations
January 18, 2012State Violation/Reminder Notice2 linked violations
November 16, 2011State Compliance achieved29 linked violations
November 16, 2011State Violation/Reminder Notice29 linked violations
May 26, 2011State Compliance achieved1 linked violation
May 26, 2011State Violation/Reminder Notice1 linked violation
October 1, 2008State Compliance achieved1 linked violation
October 1, 2008State Violation/Reminder Notice1 linked violation
September 24, 2007State Public Notification requested20 linked violations
September 24, 2007State Compliance achieved20 linked violations
September 24, 2007State Violation/Reminder Notice20 linked violations
September 13, 2007State Compliance achieved2 linked violations
September 13, 2007State Violation/Reminder Notice2 linked violations
September 18, 2006State Violation/Reminder Notice8 linked violations
September 18, 2006State Compliance achieved8 linked violations
September 14, 2006State Violation/Reminder Notice2 linked violations
September 14, 2006State Compliance achieved2 linked violations
January 5, 2006State Compliance achieved1 linked violation
September 29, 2005State Compliance achieved1 linked violation
September 29, 2005State Violation/Reminder Notice1 linked violation
September 29, 2005State Consent Decree/Judgement1 linked violation
April 12, 2005State Compliance achieved1 linked violation
April 12, 2005State Violation/Reminder Notice1 linked violation
December 29, 2004State Compliance achieved2 linked violations
December 29, 2004State Violation/Reminder Notice2 linked violations
June 16, 2004State Public Notification received20 linked violations
June 16, 2004State Compliance achieved20 linked violations
April 13, 2004State Formal Notice of Violation issued20 linked violations
April 13, 2004State Public Notification requested20 linked violations
December 16, 2003State Violation/Reminder Notice1 linked violation
December 16, 2003State Formal Notice of Violation issued1 linked violation
December 16, 2003State Formal Notice of Violation issued1 linked violation
December 16, 2003State Violation/Reminder Notice1 linked violation
December 3, 1987State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 16, 1986State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 9, 1985State Violation/Reminder Notice6 linked violations
September 30, 1982Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record

Contact

MARS BOROUGH WATER WORKS

724-625-1858

MARS, PA 16046