NORTHBROOK, IL · Lake County

WHISPERING LAKES WATER SYSTEM, INC. 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): IL0970220
System type: Community Water System
Population served: 375
Service connections: 125
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
September 1, 2010 – September 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
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, 2002 – December 31, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 1998 – March 31, 2002
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2024 – December 31, 2024	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
September 1, 2010 – September 30, 2010	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
October 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 1998 – March 31, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

July 7, 2025State Public Notification received2 linked violations
April 30, 2025State Compliance achieved1 linked violation
April 30, 2025State Compliance achieved1 linked violation
January 13, 2025State Violation/Reminder Notice1 linked violation
January 13, 2025State Public Notification requested1 linked violation
January 13, 2025State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 13, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 6, 2011State Public Notification received2 linked violations
October 19, 2010State Public Notification requested2 linked violations
October 19, 2010State Compliance achieved1 linked violation
October 19, 2010State Violation/Reminder Notice1 linked violation
October 19, 2010State Public Notification requested1 linked violation
October 19, 2010State Violation/Reminder Notice1 linked violation
June 18, 2009State Compliance achieved1 linked violation
May 18, 2009State Public Notification received1 linked violation
April 15, 2009State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 15, 2009State Public Notification requested1 linked violation
April 15, 2009State Violation/Reminder Notice7 linked violations
April 15, 2009State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
September 25, 2003State Public Notification received1 linked violation
July 10, 2003State Violation/Reminder Notice1 linked violation
July 10, 2003State Public Notification requested1 linked violation
April 22, 2003State Compliance achieved5 linked violations
April 10, 2003State Violation/Reminder Notice1 linked violation
April 10, 2003State Public Notification requested1 linked violation
January 10, 2003State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 10, 2003State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 10, 2003State Violation/Reminder Notice1 linked violation
January 10, 2003State Public Notification requested1 linked violation
October 9, 2002State Compliance achieved1 linked violation
November 24, 2001State Bilateral Compliance Agreement signed6 linked violations

Contact

HOGAN, SEAN

847-498-6000

NORTHBROOK, IL 60062-1604