LANCASTER, PA · Lancaster County

CITY OF LANCASTER 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): PA7360058
System type: Community Water System
Population served: 120,000
Service connections: 49,376
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2025 – May 31, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2024 – September 30, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2024 – June 30, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
August 1, 2013 – August 31, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Benzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Benzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Nitrite
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2010 – December 31, 2010
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2010 – October 31, 2010
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2010 – July 31, 2010
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 1999 – December 31, 1999
Resolved
OCCT/SOWT Treatment Installation/Demonstration
Health-based
Lead and Copper Rule
January 1, 1995 – March 17, 1997
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1992 – June 30, 1992
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1992 – May 31, 1992
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1992 – April 30, 1992
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 1991 – July 31, 1991
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1991 – May 31, 1991
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 1991 – March 31, 1991
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 1991 – January 31, 1991
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1990 – December 31, 1990
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 1990 – December 31, 1990
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 1986 – March 31, 1986
Resolved
Monitoring, Regular
—
Selenium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Nitrate
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Arsenic
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Cadmium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Chromium
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Fluoride
June 25, 1984 – June 24, 1985
Archived
Monitoring, Regular
—
Tritium
July 1, 1983 – June 30, 1987
Resolved
Monitoring, Regular
—
Gross Beta Particle Activity
July 1, 1983 – June 30, 1987
Resolved
Monitoring, Regular
—
38-STRONTIUM-90
July 1, 1983 – June 30, 1987
Resolved

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
May 1, 2025 – May 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
September 1, 2024 – September 30, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
August 1, 2013 – August 31, 2013	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring, Regular	Nitrite	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2010 – October 31, 2010	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2010 – July 31, 2010	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 1999 – December 31, 1999	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 1995 – March 17, 1997	OCCT/SOWT Treatment Installation/Demonstration	Lead and Copper Rule	Health-based	Resolved
June 1, 1992 – June 30, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
May 1, 1992 – May 31, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 1992 – April 30, 1992	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 1991 – July 31, 1991	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
May 1, 1991 – May 31, 1991	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 1991 – March 31, 1991	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
January 1, 1991 – January 31, 1991	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1990 – December 31, 1990	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1990 – December 31, 1990	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
January 1, 1986 – March 31, 1986	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
June 25, 1984 – June 24, 1985	Monitoring, Regular	Selenium	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Nitrate	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Arsenic	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Cadmium	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Chromium	—	Archived
June 25, 1984 – June 24, 1985	Monitoring, Regular	Fluoride	—	Archived
July 1, 1983 – June 30, 1987	Monitoring, Regular	Tritium	—	Resolved
July 1, 1983 – June 30, 1987	Monitoring, Regular	Gross Beta Particle Activity	—	Resolved
July 1, 1983 – June 30, 1987	Monitoring, Regular	38-STRONTIUM-90	—	Resolved

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

Enforcement actions

June 26, 2025State Violation/Reminder Notice1 linked violation
June 26, 2025State Compliance achieved1 linked violation
November 6, 2024State Violation/Reminder Notice1 linked violation
November 6, 2024State Compliance achieved1 linked violation
July 24, 2024State Public Notification received1 linked violation
July 24, 2024State Compliance achieved1 linked violation
July 24, 2024State Violation/Reminder Notice1 linked violation
June 27, 2017State Compliance achieved1 linked violation
February 1, 2017State Violation/Reminder Notice1 linked violation
February 1, 2017State Public Notification received1 linked violation
October 30, 2013State Compliance achieved1 linked violation
February 21, 2012State Compliance achieved40 linked violations
January 20, 2012State Violation/Reminder Notice40 linked violations
January 20, 2012State Public Notification requested40 linked violations
February 17, 2011State Compliance achieved2 linked violations
November 23, 2010State Compliance achieved1 linked violation
August 26, 2010State Violation/Reminder Notice1 linked violation
August 26, 2010State Compliance achieved1 linked violation
July 14, 1987State Compliance achieved3 linked violations
December 8, 1986State Compliance achievedgeneral compliance action — not tied to a specific violation on record
June 4, 1986State Compliance achieved1 linked violation
October 30, 1985State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 8, 1982State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
September 30, 1982Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record

Contact

CITY OF LANCASTER

717-291-4738

LANCASTER, PA 17603