LEMONT, IL · Cook County

LEMONT Water System

Current status

1 open health-based violation on record as of July 4, 2026. See the violation history below for contaminant and status details.

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): IL0311620
System type: Community Water System
Population served: 17,500
Service connections: 6,396
Ownership: local government
Water source: groundwater (wells)

Violation history

Public Education
Health-based
Lead and Copper Rule
August 31, 2025
Unaddressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – February 27, 2024
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2020 – January 15, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2015 – June 30, 2015
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Radium (-226 and -228)
January 1, 2015 – March 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2015 – March 31, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – July 3, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – August 7, 2013
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 1998 – March 31, 1998
Archived
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
December 5, 1997 – December 5, 1997
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 1997 – June 30, 1997
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 1997 – June 11, 1997
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 1997 – March 17, 1997
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 1997 – March 31, 1997
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 1996 – December 31, 1996
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
February 18, 1992 – April 4, 1992
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 1991 – January 31, 1991
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
September 1, 1988 – July 11, 1990
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
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
August 31, 2025	Public Education	Lead and Copper Rule	Health-based	Unaddressed
October 1, 2023 – February 27, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
December 30, 2020 – January 15, 2021	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Single Sample	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2014 – July 3, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2013 – August 7, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
March 1, 1998 – March 31, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 5, 1997 – December 5, 1997	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
April 1, 1997 – June 30, 1997	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 1997 – June 11, 1997	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 1997 – March 17, 1997	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 1997 – March 31, 1997	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
October 1, 1996 – December 31, 1996	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
February 18, 1992 – April 4, 1992	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 1991 – January 31, 1991	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
September 1, 1988 – July 11, 1990	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	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	—	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

July 2, 2024State Public Notification received1 linked violation
February 27, 2024State Compliance achieved1 linked violation
October 11, 2023State Public Notification requested1 linked violation
October 11, 2023State Violation/Reminder Notice1 linked violation
January 15, 2021State Compliance achieved1 linked violation
January 6, 2021State Violation/Reminder Notice1 linked violation
March 4, 2016State Compliance achieved5 linked violations
December 15, 2015State Violation/Reminder Notice1 linked violation
October 20, 2015State Violation/Reminder Notice1 linked violation
July 22, 2015State Bilateral Compliance Agreement signed5 linked violations
July 17, 2015State Violation/Reminder Notice1 linked violation
May 18, 2015State Public Notification received1 linked violation
May 18, 2015State Public Notification received1 linked violation
April 27, 2015State Formal Notice of Violation issued5 linked violations
April 16, 2015State Public Notification requested1 linked violation
April 16, 2015State Public Notification requested1 linked violation
April 16, 2015State Violation/Reminder Notice1 linked violation
April 16, 2015State Violation/Reminder Notice1 linked violation
July 18, 2014State Violation/Reminder Notice1 linked violation
July 3, 2014State Compliance achieved1 linked violation
August 7, 2013State Compliance achieved1 linked violation
July 25, 2013State Violation/Reminder Notice1 linked violation
August 13, 2007State Compliance achieved1 linked violation
July 13, 2007State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 13, 2007State Violation/Reminder Notice1 linked violation
June 8, 2007State Compliance achieved1 linked violation
April 18, 2007State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 18, 2007State Violation/Reminder Notice1 linked violation
January 18, 1999State Compliance achieved4 linked violations
May 20, 1998State Public Notification received1 linked violation
May 16, 1998State Public Notification requested1 linked violation
May 16, 1998State Violation/Reminder Notice1 linked violation
December 5, 1997State Compliance achieved1 linked violation
September 4, 1997State Compliance achieved1 linked violation
June 11, 1997State Compliance achieved1 linked violation
April 1, 1997State Public Notification received2 linked violations
March 17, 1997State Compliance achieved2 linked violations
January 1, 1997State Public Notification received2 linked violations
January 22, 1994State Public Notification requested1 linked violation
January 22, 1994State Violation/Reminder Notice1 linked violation
January 22, 1994State Public Notification requested1 linked violation
January 22, 1994State Violation/Reminder Notice1 linked violation
January 20, 1994State Public Notification received1 linked violation
April 4, 1992State Compliance achieved1 linked violation
March 26, 1992State Public Notification received2 linked violations
March 1, 1992State Violation/Reminder Notice2 linked violations
March 1, 1992State Public Notification requested2 linked violations
March 7, 1991State Public Notification received1 linked violation
March 3, 1991State Public Notification requested2 linked violations
March 3, 1991State Violation/Reminder Notice1 linked violation
July 11, 1990State Compliance achieved5 linked violations
July 5, 1990State Public Notification received2 linked violations
November 8, 1989State Public Notification received3 linked violations
September 7, 1989State Public Notification received3 linked violations
July 17, 1989State Public Notification requested3 linked violations
June 15, 1989State Public Notification issued2 linked violations
June 3, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
May 11, 1989State Public Notification received3 linked violations
March 8, 1989State Public Notification received10 linked violations
January 11, 1989State Public Notification received3 linked violations

Contact

SCHAFER, GEORGE

630-257-1590

LEMONT, IL 60439