MANHEIM, PA · Lancaster County

NORTHWESTERN LANCASTER CO AUTH 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): PA7360164
System type: Community Water System
Population served: 2,968
Service connections: 844
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
TTHM
July 1, 2025 – September 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2025 – March 31, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 11, 2018 – January 30, 2019
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2017 – December 31, 2017
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2017 – November 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2017 – June 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2016 – December 31, 2016
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 11, 2011 – September 7, 2011
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
April 1, 2011 – June 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
January 1, 2011 – March 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2010 – December 31, 2010
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2010 – December 31, 2010
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 12, 2010 – November 29, 2011
Resolved
Monitoring, Regular
—
Nitrite
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
April 1, 2010 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 2010 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2009 – December 31, 2009
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
April 12, 2009 – April 28, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
January 1, 2009 – March 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2007 – September 30, 2007
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2007 – September 30, 2007
Resolved
Monitoring, Regular
—
Nitrate
July 1, 2007 – September 30, 2007
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2006 – December 31, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
April 12, 2006 – May 4, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
January 1, 2006 – March 31, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
April 12, 2005 – June 17, 2005
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2005 – June 17, 2005
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
July 1, 2004 – September 30, 2004
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
October 1, 2003 – December 31, 2003
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 2003 – December 31, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2003 – February 28, 2003
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2000 – March 31, 2000
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2000 – March 31, 2000
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1996 – June 30, 2000
Resolved
Monitoring, Regular
—
LASSO
April 1, 1995 – June 30, 1995
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1995 – December 23, 1995
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Benzene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Toluene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Styrene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Arsenic
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Barium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Chromium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Fluoride
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Mercury
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Selenium
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Nickel
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1994 – March 31, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1991 – October 31, 1991
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 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Resolved
December 11, 2018 – January 30, 2019	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
December 1, 2017 – December 31, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
November 1, 2017 – November 30, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 11, 2011 – September 7, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
October 1, 2010 – December 31, 2010	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 12, 2010 – November 29, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Nitrite	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Atrazine	—	Resolved
April 12, 2009 – April 28, 2009	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
July 1, 2007 – September 30, 2007	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2007 – September 30, 2007	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2007 – September 30, 2007	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 12, 2006 – May 4, 2006	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2006 – March 31, 2006	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
April 12, 2005 – June 17, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2005 – June 17, 2005	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
July 1, 2004 – September 30, 2004	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
October 1, 2003 – December 31, 2003	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
October 1, 2003 – December 31, 2003	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
February 1, 2003 – February 28, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2000 – December 31, 2000	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2000 – March 31, 2000	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2000 – March 31, 2000	Monitoring, Regular	Atrazine	—	Resolved
July 1, 1996 – June 30, 2000	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 1995 – June 30, 1995	Monitoring, Regular	LASSO	—	Resolved
January 1, 1995 – December 23, 1995	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Benzene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Toluene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Styrene	—	Archived
January 1, 1994 – December 31, 1994	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Barium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Chromium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Fluoride	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Mercury	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Selenium	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Nickel	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Xylenes, Total	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,2-Dichloroethane	—	Archived
October 1, 1991 – October 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived

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

Enforcement actions

October 29, 2025State Violation/Reminder Notice1 linked violation
October 29, 2025State Compliance achieved1 linked violation
May 13, 2025State Compliance achieved1 linked violation
May 13, 2025State Violation/Reminder Notice1 linked violation
January 30, 2019State Public Notification received1 linked violation
January 30, 2019State Compliance achieved1 linked violation
March 6, 2018State Compliance achieved2 linked violations
February 15, 2018State Public Notification requested1 linked violation
February 15, 2018State Formal Notice of Violation issued1 linked violation
February 15, 2018State Violation/Reminder Notice1 linked violation
January 12, 2018State Violation/Reminder Notice1 linked violation
January 12, 2018State Public Notification requested1 linked violation
January 12, 2018State Formal Notice of Violation issued1 linked violation
October 11, 2017State Compliance achieved1 linked violation
August 3, 2017State Violation/Reminder Notice1 linked violation
August 3, 2017State Formal Notice of Violation issued1 linked violation
August 3, 2017State Formal Notice of Violation issued1 linked violation
August 3, 2017State Public Notification requested1 linked violation
August 3, 2017State Public Notification requested1 linked violation
August 3, 2017State Violation/Reminder Notice1 linked violation
March 16, 2017State Compliance achieved2 linked violations
February 15, 2017State Violation/Reminder Notice2 linked violations
November 29, 2011State Compliance achieved4 linked violations
September 7, 2011State Violation/Reminder Notice1 linked violation
September 7, 2011State Compliance achieved1 linked violation
September 7, 2011State Public Notification received1 linked violation
September 7, 2011State Public Notification received1 linked violation
September 7, 2011State Violation/Reminder Notice1 linked violation
September 7, 2011State Compliance achieved4 linked violations
August 2, 2011State Public Notification requested1 linked violation
August 2, 2011State Public Notification received2 linked violations
August 2, 2011State Violation/Reminder Notice2 linked violations
May 26, 2011State Violation/Reminder Notice1 linked violation
May 26, 2011State Public Notification received1 linked violation
May 26, 2011State Compliance achieved1 linked violation
May 26, 2011State Public Notification requested1 linked violation
April 26, 2011State Bilateral Compliance Agreement signed1 linked violation
April 26, 2011State Violation/Reminder Notice1 linked violation
February 3, 2011State Violation/Reminder Notice2 linked violations
February 3, 2011State Compliance achieved2 linked violations
November 23, 2010State Compliance achieved1 linked violation
July 29, 2010State Bilateral Compliance Agreement signed3 linked violations
July 29, 2010State Bilateral Compliance Agreement signed3 linked violations
July 29, 2010State Formal Notice of Violation issued3 linked violations
July 29, 2010State Formal Notice of Violation issued3 linked violations
April 28, 2010State Bilateral Compliance Agreement signed1 linked violation
April 28, 2010State Formal Notice of Violation issued1 linked violation
April 28, 2010State Bilateral Compliance Agreement signed1 linked violation
April 28, 2010State Formal Notice of Violation issued1 linked violation
March 15, 2010State Violation/Reminder Notice1 linked violation
March 15, 2010State Compliance achieved1 linked violation
February 23, 2010State Compliance achieved1 linked violation
February 23, 2010State Violation/Reminder Notice1 linked violation
April 28, 2009State Public Notification requested2 linked violations
April 28, 2009State Compliance achieved2 linked violations
April 28, 2009State Public Notification received2 linked violations
April 28, 2009State Formal Notice of Violation issued2 linked violations
October 28, 2008Federal Compliance achieved3 linked violations
November 2, 2007State Compliance achieved1 linked violation
November 2, 2007State Violation/Reminder Notice1 linked violation
November 2, 2007State Violation/Reminder Notice1 linked violation
November 2, 2007State Compliance achieved3 linked violations
March 1, 2007State Compliance achieved1 linked violation
May 4, 2006State Public Notification received2 linked violations
May 4, 2006State Compliance achieved2 linked violations
May 4, 2006State Formal Notice of Violation issued2 linked violations
February 24, 2006State Compliance achieved1 linked violation
February 24, 2006State Public Notification received1 linked violation
February 24, 2006State Violation/Reminder Notice1 linked violation
June 17, 2005State Compliance achieved6 linked violations
February 23, 2004State Compliance achieved2 linked violations
November 10, 2003State Compliance achieved1 linked violation
September 30, 1983Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record
August 19, 1981State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 19, 1981State Public Notification receivedgeneral compliance action — not tied to a specific violation on record

Contact

NORTHWESTERN LANCASTER CO AUTH

717-665-4508

MANHEIM, PA 17545