DOWNINGTOWN, PA · Chester County

DOWNINGTOWN WATER AUTHORITY 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): PA1150026
System type: Community Water System
Population served: 9,900
Service connections: 3,681
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2025 – September 30, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Styrene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Toluene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Benzene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2022 – June 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2018 – March 31, 2018
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
February 1, 2017 – May 8, 2017
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2017 – March 31, 2017
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2016 – March 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2015 – August 31, 2015
Resolved
Monitoring, Regular
—
Radium-226
October 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Radium-228
October 1, 2014 – December 31, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 10, 2014 – October 15, 2014
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2014 – September 30, 2014
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2014 – June 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2014 – June 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2014 – June 30, 2014
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2014 – March 31, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 11, 2014 – May 20, 2014
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Nickel
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Selenium
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2014 – December 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2014 – March 31, 2014
Resolved
Monitoring, Regular
—
Barium
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Chromium
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2014 – December 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2013 – December 31, 2013
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2013 – April 28, 2014
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2013 – July 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2013 – September 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2013 – September 30, 2013
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2013 – June 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2013 – June 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2013 – December 31, 2013
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2013 – January 31, 2013
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2013 – December 31, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2012 – June 30, 2012
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Barium
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Nickel
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Selenium
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2011 – December 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2011 – March 31, 2011
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2008 – July 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2008 – September 30, 2008
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
February 10, 2006 – February 13, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 10, 2005 – April 25, 2006
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2005 – December 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2005 – December 31, 2005
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 10, 2005 – August 16, 2005
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 10, 2005 – August 16, 2005
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2005 – September 30, 2005
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2005 – September 30, 2005
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 11, 2005 – May 24, 2005
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 11, 2005 – May 20, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2005 – June 30, 2005
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2005 – June 30, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2005 – March 31, 2005
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2005 – March 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2005 – March 31, 2005
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2004 – February 11, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2004 – December 31, 2004
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2004 – June 30, 2004
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2004 – March 31, 2004
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 1998 – January 31, 1998
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1994 – September 30, 1994
Archived
Monitoring, Regular
—
Nitrate
October 1, 1993 – December 31, 1993
Archived
Monitoring, Regular
—
Nitrate
July 1, 1993 – September 30, 1993
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 1993 – March 31, 1993
Archived
Monitoring, Regular
—
Nitrate
January 1, 1993 – March 31, 1993
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 1992 – September 30, 1992
Archived
Monitoring, Regular
—
Trichloroethylene
July 1, 1992 – September 30, 1992
Archived
Monitoring, Regular
—
Benzene
July 1, 1992 – September 30, 1992
Archived
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 1992 – September 30, 1992
Archived
Monitoring, Regular
—
Carbon tetrachloride
July 1, 1992 – September 30, 1992
Archived
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 1992 – September 30, 1992
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 1992 – September 30, 1992
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1992 – May 31, 1992
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1992 – February 29, 1992
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 1992 – January 31, 1992
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Benzene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Endrin
June 24, 1985 – June 23, 1988
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, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Archived
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2023 – December 31, 2023	Monitoring, Regular	Styrene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Toluene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Benzene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 2022 – June 30, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
February 1, 2017 – May 8, 2017	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2016 – March 31, 2016	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
August 1, 2015 – August 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Regular	Radium-226	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring, Regular	Radium-228	—	Resolved
August 10, 2014 – October 15, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2014 – June 30, 2014	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2014 – June 30, 2014	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
March 1, 2014 – March 31, 2014	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 11, 2014 – May 20, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Nickel	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Selenium	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Barium	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Chromium	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	CYANIDE	—	Resolved
October 1, 2013 – December 31, 2013	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2013 – April 28, 2014	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2013 – July 31, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2013 – September 30, 2013	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2013 – September 30, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
June 1, 2013 – June 30, 2013	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2013 – June 30, 2013	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2013 – December 31, 2013	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2013 – January 31, 2013	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2013 – December 31, 2013	Monitoring, Regular	Nitrite	—	Resolved
May 1, 2012 – May 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2012 – June 30, 2012	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Barium	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Nickel	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Selenium	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Thallium, Total	—	Resolved
November 1, 2011 – November 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2011 – March 31, 2011	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2008 – July 31, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
February 10, 2006 – February 13, 2006	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 10, 2005 – April 25, 2006	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2005 – December 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
August 10, 2005 – August 16, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
August 10, 2005 – August 16, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2005 – September 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
May 11, 2005 – May 24, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
May 11, 2005 – May 20, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2005 – June 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2005 – March 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
October 1, 2004 – February 11, 2005	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2004 – September 30, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2004 – June 30, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2004 – March 31, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 1998 – January 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Nitrate	—	Archived
October 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Archived
July 1, 1993 – September 30, 1993	Monitoring, Regular	Nitrate	—	Archived
March 1, 1993 – March 31, 1993	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
January 1, 1993 – March 31, 1993	Monitoring, Regular	Nitrate	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	Trichloroethylene	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	Benzene	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	1,2-Dichloroethane	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	Carbon tetrachloride	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	p-Dichlorobenzene	—	Archived
July 1, 1992 – September 30, 1992	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
May 1, 1992 – May 31, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
February 1, 1992 – February 29, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 1992 – January 31, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Benzene	—	Archived
June 24, 1985 – June 23, 1988	Monitoring, Regular	Endrin	—	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 12, 2025State Public Notification requested1 linked violation
November 12, 2025State Formal Notice of Violation issued1 linked violation
September 25, 2025State Violation/Reminder Notice1 linked violation
September 25, 2025State Public Notification requested1 linked violation
February 7, 2024State Compliance achieved20 linked violations
February 5, 2024State Violation/Reminder Notice20 linked violations
June 2, 2023State Public Notification received1 linked violation
July 29, 2022State Violation/Reminder Notice1 linked violation
July 29, 2022State Compliance achieved1 linked violation
July 29, 2022State Compliance achieved1 linked violation
July 29, 2022State Public Notification requested1 linked violation
July 29, 2022State Public Notification requested1 linked violation
July 29, 2022State Violation/Reminder Notice1 linked violation
December 7, 2021State Compliance achieved1 linked violation
December 7, 2021State Violation/Reminder Notice1 linked violation
July 2, 2018State Public Notification received1 linked violation
July 2, 2018State Compliance achieved1 linked violation
June 15, 2018State Public Notification requested1 linked violation
June 13, 2018State Violation/Reminder Notice1 linked violation
May 12, 2017State Compliance achieved1 linked violation
May 8, 2017State Compliance achieved1 linked violation
May 8, 2017State Violation/Reminder Notice1 linked violation
March 29, 2017State Violation/Reminder Notice1 linked violation
February 21, 2017State Compliance achieved1 linked violation
September 27, 2016State Violation/Reminder Notice1 linked violation
September 27, 2016State Compliance achieved1 linked violation
September 27, 2016State Violation/Reminder Notice1 linked violation
October 27, 2015State Compliance achieved1 linked violation
April 9, 2015State Compliance achieved11 linked violations
February 20, 2015State Compliance achieved3 linked violations
January 28, 2015State Violation/Reminder Notice14 linked violations
January 28, 2015State Public Notification requested11 linked violations
December 3, 2014State Compliance achieved1 linked violation
November 26, 2014State Violation/Reminder Notice1 linked violation
November 13, 2014State Compliance achieved1 linked violation
October 24, 2014State Violation/Reminder Notice1 linked violation
October 15, 2014State Compliance achieved3 linked violations
September 26, 2014State Compliance achieved1 linked violation
August 21, 2014State Violation/Reminder Notice1 linked violation
August 21, 2014State Violation/Reminder Notice1 linked violation
July 24, 2014State Violation/Reminder Notice2 linked violations
July 24, 2014State Violation/Reminder Notice2 linked violations
May 20, 2014State Compliance achieved2 linked violations
May 20, 2014State Compliance achieved2 linked violations
May 14, 2014State Violation/Reminder Notice2 linked violations
May 14, 2014State Compliance achieved1 linked violation
April 28, 2014State Compliance achieved1 linked violation
April 1, 2014State Violation/Reminder Notice1 linked violation
February 25, 2014State Compliance achieved2 linked violations
February 24, 2014State Violation/Reminder Notice2 linked violations
February 21, 2014State Compliance achieved2 linked violations
February 21, 2014State Violation/Reminder Notice2 linked violations
December 19, 2013State Compliance achieved4 linked violations
November 18, 2013State Violation/Reminder Notice1 linked violation
November 12, 2013State Compliance achieved1 linked violation
November 1, 2013State Violation/Reminder Notice7 linked violations
October 24, 2013State Public Notification requested1 linked violation
October 24, 2013State Violation/Reminder Notice1 linked violation
October 24, 2013State Compliance achieved1 linked violation
October 24, 2013State Public Notification received1 linked violation
October 9, 2013State Compliance achieved8 linked violations
February 4, 2013State Violation/Reminder Notice8 linked violations
September 18, 2012State Compliance achieved2 linked violations
September 4, 2012State Compliance achieved1 linked violation
July 31, 2012State Compliance achieved2 linked violations
July 31, 2012State Compliance achieved1 linked violation
April 10, 2012State Compliance achieved2 linked violations
April 9, 2012State Violation/Reminder Notice1 linked violation
April 9, 2012State Compliance Meeting conducted2 linked violations
April 9, 2012State Compliance Meeting conducted2 linked violations
December 19, 2011State Compliance achieved1 linked violation
November 26, 2008State Violation/Reminder Notice1 linked violation
November 26, 2008State Compliance achieved1 linked violation
November 26, 2008State Compliance achieved1 linked violation
November 26, 2008State Violation/Reminder Notice1 linked violation
September 12, 2008State Compliance achieved1 linked violation
September 12, 2008State Compliance achieved1 linked violation
April 25, 2006State Compliance achieved1 linked violation
February 13, 2006State Compliance achieved3 linked violations
January 10, 2006State Compliance achieved2 linked violations
January 10, 2006State Formal Notice of Violation issued2 linked violations
August 16, 2005State Compliance achieved4 linked violations
August 16, 2005State Formal Notice of Violation issued2 linked violations
May 24, 2005State Compliance achieved4 linked violations
May 24, 2005State Formal Notice of Violation issued1 linked violation
May 20, 2005State Compliance achieved1 linked violation
May 20, 2005State Public Notification received1 linked violation
May 20, 2005State Public Notification requested1 linked violation
May 20, 2005State Compliance Meeting conducted1 linked violation
March 17, 2005State Compliance achieved4 linked violations
February 11, 2005State Compliance achieved1 linked violation
February 11, 2005State Consent Decree/Judgement1 linked violation
September 30, 1982Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record

Contact

DOWNINGTOWN WATER AUTHORITY

610-269-5362

DOWNINGTOWN, PA 19335