LAKE ZURICH, IL · Lake County

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

System facts

System ID (PWSID): IL0970850
System type: Community Water System
Population served: 19,759
Service connections: 6,862
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2023 – December 31, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2006 – December 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2006 – September 30, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2006 – June 30, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2005 – December 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2004 – June 30, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2004 – March 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2003 – December 31, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2003 – September 30, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2003 – June 30, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2003 – March 31, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2002 – December 31, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
May 1, 1999 – September 30, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Barium
July 1, 1995 – September 30, 1995
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
June 1, 1995 – April 30, 1999
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
May 1, 1995 – April 30, 1999
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
May 17, 1991 – May 16, 1995
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 4, 1985 – October 15, 1986
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
March 31, 1981 – March 30, 1985
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
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
October 1, 2023 – December 31, 2023	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2005 – December 31, 2005	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2004 – June 30, 2004	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2004 – March 31, 2004	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2003 – December 31, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2003 – September 30, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2003 – March 31, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
May 1, 1999 – September 30, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 1995 – September 30, 1995	Maximum Contaminant Level Violation, Average	Barium	Health-based	Resolved
June 1, 1995 – April 30, 1999	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
May 1, 1995 – April 30, 1999	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
May 17, 1991 – May 16, 1995	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 4, 1985 – October 15, 1986	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
March 31, 1981 – March 30, 1985	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	—	Archived

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

Enforcement actions

December 26, 2024State Compliance achieved1 linked violation
October 10, 2024State Compliance achieved1 linked violation
June 7, 2024State Public Notification received1 linked violation
June 7, 2024State Public Notification received1 linked violation
January 11, 2024State Public Notification requested1 linked violation
January 11, 2024State Public Notification requested1 linked violation
January 11, 2024State Violation/Reminder Notice1 linked violation
January 11, 2024State Violation/Reminder Notice1 linked violation
August 28, 2009State Compliance achieved12 linked violations
July 15, 2009State Violation/Reminder Notice1 linked violation
April 21, 2009State Violation/Reminder Notice1 linked violation
March 2, 2009State Public Notification received1 linked violation
January 14, 2009State Violation/Reminder Notice1 linked violation
January 14, 2009State Public Notification requested1 linked violation
December 1, 2008State Public Notification received1 linked violation
October 17, 2008State Violation/Reminder Notice1 linked violation
October 17, 2008State Public Notification requested1 linked violation
September 8, 2008State Public Notification received1 linked violation
July 17, 2008State Public Notification requested1 linked violation
July 17, 2008State Violation/Reminder Notice1 linked violation
April 16, 2008State Public Notification requested2 linked violations
February 28, 2008State Public Notification received1 linked violation
January 17, 2008State Violation/Reminder Notice1 linked violation
January 17, 2008State Public Notification requested1 linked violation
December 3, 2007State Public Notification received1 linked violation
October 18, 2007State Violation/Reminder Notice1 linked violation
October 18, 2007State Public Notification requested1 linked violation
August 6, 2007State Public Notification received1 linked violation
July 18, 2007State Public Notification requested1 linked violation
July 18, 2007State Violation/Reminder Notice1 linked violation
July 3, 2007State Bilateral Compliance Agreement signed27 linked violations
April 24, 2007State Public Notification requested2 linked violations
March 6, 2007State Public Notification received2 linked violations
January 18, 2007State Public Notification requested2 linked violations
January 18, 2007State Violation/Reminder Notice1 linked violation
January 16, 2007State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
October 12, 2006State Public Notification requested1 linked violation
June 14, 2006State Public Notification received1 linked violation
January 10, 2006State Public Notification requested2 linked violations
October 7, 2005State Public Notification requested1 linked violation
August 12, 2004State Violation/Reminder Notice2 linked violations
June 30, 2004State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 10, 2003State Public Notification requested1 linked violation
April 10, 2003State Violation/Reminder Notice2 linked violations
February 21, 2003State Public Notification received1 linked violation
February 1, 1996State Public Notification received2 linked violations
September 30, 1995State Compliance achieved1 linked violation
July 17, 1995State Public Notification requested1 linked violation
July 17, 1995State Violation/Reminder Notice1 linked violation
October 1, 1992State Public Notification received1 linked violation
July 1, 1992State Public Notification received1 linked violation
June 4, 1992State Public Notification received1 linked violation
January 21, 1992State Public Notification received1 linked violation
October 28, 1991State Public Notification received1 linked violation
October 16, 1991State Public Notification requested1 linked violation
June 20, 1991State Public Notification received1 linked violation
June 6, 1991State Public Notification received1 linked violation
October 15, 1986State Compliance achieved1 linked violation

Contact

SCHMITT, STEVEN

847-540-1696

LAKE ZURICH, IL 60047