BRYN MAWR, PA · Montgomery County

AQUA PA MAIN SYSTEM 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): PA1460073
System type: Community Water System
Population served: 822,600
Service connections: 304,127
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
Chlorite
September 1, 2025 – September 30, 2025
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
November 13, 2024 – December 31, 2024
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
November 1, 2024 – November 30, 2024
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Selenium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Nickel
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Mercury
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Barium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Selenium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Nickel
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Mercury
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Chromium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Barium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Chromium
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2023 – December 31, 2023
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2023 – January 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
June 1, 2021 – June 30, 2021
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2020 – March 31, 2020
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2020 – March 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
May 1, 2019 – May 31, 2019
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
December 1, 2018 – December 31, 2018
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
March 1, 2018 – March 31, 2018
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
July 1, 2017 – July 31, 2017
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2015 – December 31, 2015
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2014 – December 31, 2014
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2014 – April 30, 2014
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Benzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Toluene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Styrene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
LASSO
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Simazine
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Endrin
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2014 – November 10, 2014
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2014 – November 10, 2014
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2014 – December 31, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 10, 2013 – November 12, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2013 – September 30, 2013
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
September 1, 2011 – September 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2009 – June 30, 2009
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Barium
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Selenium
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Nickel
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Mercury
January 1, 2006 – December 31, 2006
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 1992 – March 1, 1992
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1992 – February 29, 1992
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1991 – February 28, 1991
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	Chlorite	—	Archived
November 13, 2024 – December 31, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 1, 2024 – November 30, 2024	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Selenium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nickel	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Mercury	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Barium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Selenium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nickel	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Mercury	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Chromium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Barium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Chromium	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Beryllium, Total	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2023 – January 31, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
June 1, 2021 – June 30, 2021	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
May 1, 2019 – May 31, 2019	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
December 1, 2018 – December 31, 2018	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
March 1, 2018 – March 31, 2018	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
July 1, 2017 – July 31, 2017	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
October 1, 2015 – December 31, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2014 – April 30, 2014	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Benzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Toluene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Styrene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	LASSO	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Simazine	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Endrin	—	Resolved
January 1, 2014 – November 10, 2014	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2014 – November 10, 2014	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
November 10, 2013 – November 12, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
September 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
September 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2009 – June 30, 2009	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Barium	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Selenium	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nickel	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Mercury	—	Resolved
March 1, 1992 – March 1, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 1992 – February 29, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 1991 – February 28, 1991	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived

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

Enforcement actions

November 3, 2025State Public Notification requested1 linked violation
October 24, 2025State Violation/Reminder Notice1 linked violation
May 21, 2025State Compliance achieved23 linked violations
May 21, 2025State Public Notification received23 linked violations
January 28, 2025State Compliance achieved1 linked violation
January 28, 2025State Public Notification requested24 linked violations
January 27, 2025State Violation/Reminder Notice23 linked violations
January 27, 2025State Public Notification received1 linked violation
December 31, 2024State Public Notification received1 linked violation
December 31, 2024State Compliance achieved2 linked violations
December 31, 2024State Violation/Reminder Notice2 linked violations
December 31, 2024State Public Notification requested1 linked violation
May 3, 2024State Compliance achieved1 linked violation
May 3, 2024State Public Notification received1 linked violation
February 6, 2024State Public Notification requested1 linked violation
January 30, 2024State Violation/Reminder Notice1 linked violation
August 15, 2023State Compliance achieved1 linked violation
April 10, 2023State Violation/Reminder Notice1 linked violation
September 29, 2021State Compliance achieved1 linked violation
August 11, 2021State Violation/Reminder Notice1 linked violation
March 9, 2021State Public Notification received12 linked violations
October 6, 2020State Compliance achieved12 linked violations
October 6, 2020State Public Notification requested12 linked violations
May 19, 2020State Violation/Reminder Notice12 linked violations
May 19, 2020State Violation/Reminder Notice12 linked violations
November 25, 2019State Compliance achieved1 linked violation
June 28, 2019State Violation/Reminder Notice1 linked violation
June 28, 2019State Violation/Reminder Notice1 linked violation
February 14, 2019State Compliance achieved1 linked violation
February 7, 2019State Violation/Reminder Notice1 linked violation
July 2, 2018State Compliance achieved1 linked violation
May 16, 2018State Violation/Reminder Notice1 linked violation
August 29, 2017State Public Notification requested1 linked violation
August 29, 2017State Compliance achieved1 linked violation
August 29, 2017State Public Notification received1 linked violation
August 29, 2017State Violation/Reminder Notice1 linked violation
September 9, 2016State Public Notification received2 linked violations
September 9, 2016State Compliance achieved2 linked violations
May 11, 2016State Public Notification requested2 linked violations
May 11, 2016State Violation/Reminder Notice2 linked violations
June 26, 2015State Compliance achieved21 linked violations
June 26, 2015State Public Notification requested21 linked violations
June 26, 2015State Compliance achieved23 linked violations
June 26, 2015State Public Notification received23 linked violations
June 26, 2015State Public Notification requested23 linked violations
June 26, 2015State Public Notification received21 linked violations
February 12, 2015State Violation/Reminder Notice21 linked violations
December 8, 2014State Violation/Reminder Notice1 linked violation
November 10, 2014State Violation/Reminder Notice25 linked violations
November 10, 2014State Compliance achieved3 linked violations
July 9, 2014State Compliance achieved1 linked violation
July 9, 2014State Violation/Reminder Notice1 linked violation
November 12, 2013State Public Notification received2 linked violations
November 12, 2013State Public Notification requested2 linked violations
November 12, 2013State Violation/Reminder Notice2 linked violations
November 12, 2013State Compliance achieved2 linked violations
June 4, 2012State Compliance achieved2 linked violations
April 18, 2012State Public Notification received2 linked violations
February 15, 2012State Public Notification requested1 linked violation
February 15, 2012State Violation/Reminder Notice1 linked violation
February 13, 2012State Public Notification requested1 linked violation
February 13, 2012State Violation/Reminder Notice1 linked violation
December 9, 2011State Compliance achieved1 linked violation
December 9, 2011State Violation/Reminder Notice1 linked violation
August 19, 2011State Compliance achieved2 linked violations
August 4, 2011State Violation/Reminder Notice2 linked violations
April 19, 2011State Compliance achieved1 linked violation
April 19, 2011State Public Notification received1 linked violation
May 20, 2010State Violation/Reminder Notice1 linked violation
May 20, 2010State Violation/Reminder Notice1 linked violation
May 20, 2010State Public Notification requested1 linked violation
May 20, 2010State Public Notification requested1 linked violation
August 26, 2009State Compliance achieved2 linked violations
March 15, 2007State Compliance achieved11 linked violations
March 15, 2007State Public Notification received11 linked violations
February 6, 2007State Public Notification requested11 linked violations
February 6, 2007State Violation/Reminder Notice11 linked violations

Contact

AQUA PA MAIN SYSTEM

610-645-1122

BRYN MAWR, PA 19010