ANTIOCH, IL · Lake County

ANTIOCH 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): IL0970050
System type: Community Water System
Population served: 14,175
Service connections: 4,598
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – February 28, 2024
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
August 7, 2008 – October 3, 2008
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 7, 2008 – October 3, 2008
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2007 – June 30, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2006 – November 30, 2006
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2000 – December 31, 2000
Archived
WQP Entry Point/Tap Treatment Technique Non-Compliance
Health-based
Lead and Copper Rule
October 1, 2000 – December 31, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 1998 – September 30, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1997 – July 31, 1997
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 1997 – June 30, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1997 – March 31, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1995 – May 31, 1995
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1994 – July 31, 1994
Archived
Public Education
Health-based
Lead and Copper Rule
January 1, 1994 – June 26, 1995
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1993 – July 31, 1993
Archived
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
April 27, 1993 – December 22, 1994
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
LASSO
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Atrazine
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1993 – March 31, 1993
Resolved
Public Education
Health-based
Lead and Copper Rule
January 1, 1993 – January 1, 1994
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
2,4-D
January 1, 1993 – March 31, 1993
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
April 1, 1992 – September 30, 1992
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

Unaddressed no corrective action on record yetResolved 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	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
October 1, 2023 – February 28, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
August 7, 2008 – October 3, 2008	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
August 7, 2008 – October 3, 2008	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2007 – June 30, 2007	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
December 1, 2006 – December 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2006 – November 30, 2006	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2006 – December 31, 2006	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
December 1, 2000 – December 31, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
October 1, 2000 – December 31, 2000	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Health-based	Resolved
July 1, 1998 – September 30, 1998	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 1997 – July 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
June 1, 1997 – June 30, 1997	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
March 1, 1997 – March 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 1995 – May 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1994 – July 31, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 1994 – June 26, 1995	Public Education	Lead and Copper Rule	Health-based	Resolved
July 1, 1993 – July 31, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
April 27, 1993 – December 22, 1994	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	LASSO	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Atrazine	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 1993 – January 1, 1994	Public Education	Lead and Copper Rule	Health-based	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	2,4-D	—	Resolved
April 1, 1992 – September 30, 1992	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

August 1, 2025State Violation/Reminder Notice1 linked violation
October 1, 2024State Public Notification received1 linked violation
February 28, 2024State Compliance achieved1 linked violation
October 11, 2023State Public Notification requested1 linked violation
October 3, 2008State Compliance achieved2 linked violations
October 3, 2008State Public Notification received1 linked violation
September 11, 2008State Violation/Reminder Notice2 linked violations
January 4, 2008State Compliance achieved1 linked violation
August 7, 2007State Violation/Reminder Notice1 linked violation
August 7, 2007State Public Notification requested1 linked violation
July 1, 2007State Compliance achieved2 linked violations
January 15, 2007State Compliance achieved2 linked violations
December 14, 2006State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 31, 2001State Violation/Reminder Notice1 linked violation
March 31, 2001State Compliance achieved1 linked violation
March 31, 2001State Public Notification requested1 linked violation
June 30, 1999State Compliance achieved2 linked violations
October 5, 1997State Public Notification requested1 linked violation
October 5, 1997State Violation/Reminder Notice1 linked violation
August 30, 1997State Violation/Reminder Notice1 linked violation
August 30, 1997State Public Notification requested1 linked violation
February 21, 1997State Compliance achieved1 linked violation
August 4, 1995State Public Notification received1 linked violation
July 29, 1995State Public Notification requested1 linked violation
July 29, 1995State Violation/Reminder Notice1 linked violation
June 26, 1995State Compliance achieved1 linked violation
December 22, 1994State Compliance achieved1 linked violation
October 10, 1994State Public Notification received1 linked violation
October 2, 1994State Public Notification requested1 linked violation
October 2, 1994State Violation/Reminder Notice1 linked violation
April 7, 1994State Compliance achieved1 linked violation
April 7, 1994State Compliance achieved1 linked violation
March 30, 1994State Violation/Reminder Notice1 linked violation
March 30, 1994State Public Notification requested1 linked violation
March 30, 1994State Violation/Reminder Notice1 linked violation
March 30, 1994State Public Notification requested1 linked violation
January 1, 1994State Compliance achieved1 linked violation
January 1, 1994State Compliance achieved1 linked violation
September 11, 1993State Violation/Reminder Notice1 linked violation
August 16, 1993State Compliance achieved18 linked violations
July 30, 1993State Public Notification requested18 linked violations
July 30, 1993State Violation/Reminder Notice18 linked violations

Contact

HEIMBRODT, DENNIS

847-395-1881

ANTIOCH, IL 60002