LAKE IN THE HILLS, IL · McHenry County

LAKE IN THE HILLS 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): IL1110400
System type: Community Water System
Population served: 28,661
Service connections: 9,590
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2025 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2025 – December 31, 2025
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2012 – August 31, 2012
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2012 – July 8, 2013
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1997 – July 31, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1997 – July 31, 1997
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
September 14, 1984 – July 1, 1986
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
January 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
August 1, 2012 – August 31, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2012 – July 8, 2013	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 1997 – July 31, 1997	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
July 1, 1997 – July 31, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 14, 1984 – July 1, 1986	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

December 1, 2025State Public Notification received2 linked violations
October 14, 2025State Public Notification requested2 linked violations
October 14, 2025State Violation/Reminder Notice2 linked violations
July 8, 2013State Compliance achieved1 linked violation
October 9, 2012State Public Notification received1 linked violation
September 28, 2012State Compliance achieved1 linked violation
September 12, 2012State Public Notification requested1 linked violation
September 12, 2012State Violation/Reminder Notice1 linked violation
August 23, 2012State Violation/Reminder Notice1 linked violation
January 31, 2007State Compliance achieved1 linked violation
January 16, 2007State Violation/Reminder Notice1 linked violation
January 10, 2006State Compliance achieved1 linked violation
August 10, 2005State Violation/Reminder Notice1 linked violation
August 20, 1999State Compliance achieved1 linked violation
August 16, 1999State Compliance achieved1 linked violation
May 11, 1999State Violation/Reminder Notice1 linked violation
May 11, 1999State Public Notification requested1 linked violation
April 29, 1999State Public Notification requested1 linked violation
April 29, 1999State Violation/Reminder Notice1 linked violation
October 5, 1997State Public Notification requested2 linked violations
October 5, 1997State Violation/Reminder Notice2 linked violations
September 26, 1997State Public Notification received2 linked violations
May 17, 1995State Public Notification received1 linked violation
April 6, 1995State Public Notification received1 linked violation
March 30, 1995State Public Notification requested1 linked violation
March 30, 1995State Violation/Reminder Notice1 linked violation

Contact

RIVERA, KEVIN

847-960-7520

LAKE IN THE HILLS, IL 60156