LOCKPORT, IL · Will County

LOCKPORT Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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 Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID): IL1970500
System type: Community Water System
Population served: 23,100
Service connections: 9,839
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring and Reporting (DBP)
—
Chlorine
December 1, 2025 – December 31, 2025
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2025 – December 31, 2025
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2025 – November 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Chlorine
November 1, 2025 – November 30, 2025
Archived
Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
July 2, 2025
Unaddressed
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Toxaphene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Dalapon
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Diquat
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Endothall
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Simazine
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Picloram
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Carbofuran
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Aldicarb
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Atrazine
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
LASSO
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Heptachlor
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
2,4-D
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
2,4,5-TP
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Pentachlorophenol
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Chlordane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Diquat
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Endrin
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2023 – December 31, 2025
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2015 – June 30, 2015
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 1, 2012 – July 31, 2012
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2011 – December 31, 2013
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
August 15, 2009 – September 14, 2009
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 15, 2009 – September 14, 2009
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 2008 – July 31, 2008
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 1, 2006 – February 8, 2008
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2001 – September 30, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
April 1, 1999 – October 31, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 1998 – December 31, 1998
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
December 1, 1998 – December 31, 1998
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1997 – September 30, 2001
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
July 1, 1997 – June 30, 1998
Resolved
Public Education
Health-based
Lead and Copper Rule
January 1, 1997 – February 5, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1994 – December 31, 1994
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 1994 – March 31, 1994
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1993 – September 30, 1997
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
November 1, 1989 – September 30, 1993
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1989 – September 30, 1993
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 1988 – September 30, 1992
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 4, 1985 – October 3, 1989
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 1984 – September 30, 1988
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 17, 1980 – October 16, 1984
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Resolved

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Archived
December 1, 2025 – December 31, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Archived
November 1, 2025 – November 30, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Archived
November 1, 2025 – November 30, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Archived
July 2, 2025	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
January 1, 2023 – December 31, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Toxaphene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Dalapon	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Diquat	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Endothall	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Simazine	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Picloram	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Aldicarb sulfone	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Carbofuran	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Aldicarb	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Atrazine	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	LASSO	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Heptachlor	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Heptachlor epoxide	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	2,4-D	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	2,4,5-TP	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Pentachlorophenol	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Chlordane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Diquat	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Endrin	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	BHC-GAMMA	—	Archived
June 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2012 – July 31, 2012	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Nitrite	—	Resolved
August 15, 2009 – September 14, 2009	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
August 15, 2009 – September 14, 2009	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2008 – July 31, 2008	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2006 – February 8, 2008	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
October 1, 2001 – September 30, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 1999 – July 31, 1999	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 1999 – October 31, 2002	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
December 1, 1998 – December 31, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 1998 – December 31, 1998	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
October 1, 1997 – September 30, 2001	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 1997 – June 30, 1998	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
January 1, 1997 – February 5, 1998	Public Education	Lead and Copper Rule	Health-based	Resolved
December 1, 1994 – December 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1994 – March 31, 1994	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 1993 – September 30, 1997	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
November 1, 1989 – September 30, 1993	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 1989 – September 30, 1993	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 1988 – September 30, 1992	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
October 4, 1985 – October 3, 1989	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 1984 – September 30, 1988	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
October 17, 1980 – October 16, 1984	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

December 30, 2025State Violation/Reminder Notice1 linked violation
December 30, 2025State Public Notification received1 linked violation
December 30, 2025State Public Notification requested1 linked violation
December 30, 2025State Public Notification requested1 linked violation
December 30, 2025State Violation/Reminder Notice1 linked violation
July 3, 2025State Violation/Reminder Notice1 linked violation
July 3, 2025State Public Notification requested1 linked violation
July 31, 2015State Compliance achieved1 linked violation
July 28, 2015State Public Notification received1 linked violation
July 13, 2015State Public Notification requested1 linked violation
July 13, 2015State Violation/Reminder Notice1 linked violation
June 10, 2014State Public Notification received1 linked violation
May 6, 2014State Compliance achieved1 linked violation
January 13, 2014State Violation/Reminder Notice1 linked violation
January 13, 2014State Public Notification requested1 linked violation
June 7, 2013State Public Notification received1 linked violation
August 13, 2012State Violation/Reminder Notice1 linked violation
August 13, 2012State Public Notification requested1 linked violation
July 31, 2012State Compliance achieved1 linked violation
September 14, 2009State Compliance achieved2 linked violations
September 11, 2009State Violation/Reminder Notice2 linked violations
January 31, 2009State Compliance achieved1 linked violation
August 14, 2008State Public Notification requested1 linked violation
August 14, 2008State Violation/Reminder Notice1 linked violation
February 13, 2008State Violation/Reminder Notice1 linked violation
February 11, 2008State Public Notification received1 linked violation
February 8, 2008State Compliance achieved1 linked violation
January 31, 2007State Compliance achieved1 linked violation
January 11, 2007State Public Notification requested1 linked violation
January 11, 2007State Violation/Reminder Notice1 linked violation
October 14, 2005State Public Notification received2 linked violations
May 4, 2005State Violation/Reminder Notice1 linked violation
May 4, 2005State Violation/Reminder Notice1 linked violation
May 4, 2005State Public Notification requested1 linked violation
May 4, 2005State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
May 4, 2005State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
May 4, 2005State Public Notification requested1 linked violation
April 11, 2005State Compliance achieved2 linked violations
February 19, 2003State Public Notification received1 linked violation
October 31, 2002State Compliance achieved1 linked violation
September 30, 2002State Compliance achieved8 linked violations
September 15, 1999State Public Notification requested1 linked violation
April 2, 1999State Public Notification requested1 linked violation
April 2, 1999State Violation/Reminder Notice1 linked violation
February 15, 1999State Violation/Reminder Notice2 linked violations
February 15, 1999State Public Notification requested2 linked violations
June 30, 1998State Compliance achieved3 linked violations
June 1, 1998State Public Notification received1 linked violation
April 1, 1998State Public Notification received1 linked violation
March 1, 1998State Public Notification received1 linked violation
February 17, 1998State Violation/Reminder Notice1 linked violation
February 17, 1998State Public Notification requested1 linked violation
February 5, 1998State Compliance achieved1 linked violation
May 1, 1997State Public Notification received1 linked violation
February 1, 1997State Public Notification received1 linked violation
January 1, 1997State Public Notification received1 linked violation
November 1, 1996State Public Notification received1 linked violation
September 1, 1996State Public Notification received1 linked violation
August 1, 1996State Public Notification received1 linked violation
June 1, 1996State Public Notification received1 linked violation
May 1, 1996State Public Notification received1 linked violation
April 1, 1996State Public Notification received1 linked violation
March 1, 1996State Public Notification received1 linked violation
August 1, 1995State Public Notification received1 linked violation
July 1, 1995State Public Notification received1 linked violation
March 12, 1995State Violation/Reminder Notice1 linked violation
March 12, 1995State Public Notification requested1 linked violation
March 8, 1995State Public Notification received1 linked violation
January 12, 1995State Compliance achieved5 linked violations
January 1, 1995State Public Notification received2 linked violations
April 1, 1994State Public Notification requested2 linked violations
April 1, 1994State Violation/Reminder Notice2 linked violations
April 1, 1994State Public Notification requested1 linked violation
April 1, 1994State Public Notification requested1 linked violation
April 1, 1994State Violation/Reminder Notice2 linked violations
November 1, 1993State Public Notification received2 linked violations
November 1, 1993State Public Notification received2 linked violations
November 1, 1993State Public Notification received2 linked violations
August 1, 1993State Public Notification received3 linked violations
February 1, 1993State Public Notification received3 linked violations
November 1, 1992State Public Notification received4 linked violations
August 24, 1992State Public Notification received3 linked violations
June 4, 1992State Public Notification received3 linked violations
February 13, 1992State Public Notification received3 linked violations
November 18, 1991State Public Notification received3 linked violations
July 11, 1991State Administrative/Compliance Order without penalty issued3 linked violations
May 13, 1991State Public Notification received3 linked violations
January 8, 1991State Public Notification received3 linked violations
December 18, 1990State Public Notification requested4 linked violations
August 20, 1990State Public Notification received3 linked violations
December 23, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
December 23, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 15, 1989State Public Notification received3 linked violations
March 7, 1989State Public Notification requested3 linked violations
November 30, 1988State Public Notification received2 linked violations

Contact

LOVERING, BRIAN

815-838-0549

LOCKPORT, IL 60441