CHICAGO, IL · Cook County

BLACKHAWK ESTATES LLC 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): IL0317765
System type: Community Water System
Population served: 1,238
Service connections: 495
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
June 8, 2024 – May 13, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2023 – March 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2023 – March 31, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2022 – September 30, 2022
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2022 – June 30, 2022
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2017 – November 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2017 – December 12, 2017
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 2, 2013 – January 18, 2013
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2012 – September 30, 2012
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 13, 2012 – February 25, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – July 22, 2011
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – July 21, 2010
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 2, 2010 – March 29, 2010
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2005 – October 10, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
April 1, 2005 – April 12, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2005 – June 30, 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
Gross Alpha, Excl. Radon and U
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2004 – September 30, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2004 – March 31, 2004
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2004 – March 31, 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
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1999 – August 31, 1999
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
June 8, 2024 – May 13, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
March 1, 2023 – March 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2023 – March 31, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2022 – December 31, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2022 – September 30, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 2022 – June 30, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
November 1, 2017 – November 30, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2017 – December 12, 2017	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 2, 2013 – January 18, 2013	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 13, 2012 – February 25, 2012	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2011 – July 22, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2010 – July 21, 2010	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 2, 2010 – March 29, 2010	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2005 – October 10, 2005	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2005 – April 12, 2005	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
April 1, 2005 – June 30, 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
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2004 – September 30, 2004	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	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2004 – March 31, 2004	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	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
August 1, 1999 – August 31, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	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 20, 2025State Violation/Reminder Notice1 linked violation
June 24, 2025State Public Notification received1 linked violation
May 13, 2025State Compliance achieved1 linked violation
August 30, 2024State Compliance achieved1 linked violation
August 30, 2024State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 17, 2024State Violation/Reminder Notice1 linked violation
June 6, 2024State Formal Notice of Violation issued1 linked violation
May 8, 2024State Violation/Reminder Notice1 linked violation
May 8, 2024State Public Notification requested1 linked violation
February 7, 2024State Public Notification received1 linked violation
May 24, 2023State Public Notification received1 linked violation
May 24, 2023State Public Notification received1 linked violation
April 26, 2023State Compliance achieved1 linked violation
April 26, 2023State Compliance achieved1 linked violation
April 14, 2023State Public Notification requested1 linked violation
April 14, 2023State Violation/Reminder Notice1 linked violation
April 14, 2023State Public Notification requested1 linked violation
April 14, 2023State Violation/Reminder Notice1 linked violation
March 21, 2023State Compliance achieved1 linked violation
February 10, 2023State Violation/Reminder Notice1 linked violation
February 10, 2023State Public Notification requested1 linked violation
October 24, 2022State Compliance achieved1 linked violation
October 18, 2022State Violation/Reminder Notice1 linked violation
September 6, 2022State Compliance achieved1 linked violation
July 13, 2022State Violation/Reminder Notice1 linked violation
March 10, 2022State Compliance achieved1 linked violation
January 19, 2022State Violation/Reminder Notice1 linked violation
February 26, 2018State Public Notification received1 linked violation
February 26, 2018State Public Notification received1 linked violation
December 13, 2017State Violation/Reminder Notice1 linked violation
December 13, 2017State Violation/Reminder Notice1 linked violation
December 13, 2017State Public Notification requested1 linked violation
December 13, 2017State Public Notification requested1 linked violation
December 12, 2017State Compliance achieved2 linked violations
June 27, 2013State Public Notification received1 linked violation
January 18, 2013State Compliance achieved1 linked violation
January 4, 2013State Violation/Reminder Notice1 linked violation
October 16, 2012State Violation/Reminder Notice1 linked violation
October 16, 2012State Public Notification requested1 linked violation
October 5, 2012State Compliance achieved1 linked violation
March 2, 2012State Public Notification received1 linked violation
February 25, 2012State Compliance achieved1 linked violation
February 15, 2012State Violation/Reminder Notice1 linked violation
August 16, 2011State Violation/Reminder Notice1 linked violation
July 22, 2011State Compliance achieved1 linked violation
April 5, 2011State Compliance achieved1 linked violation
January 12, 2011State Public Notification requested1 linked violation
January 12, 2011State Violation/Reminder Notice1 linked violation
July 21, 2010State Compliance achieved1 linked violation
July 16, 2010State Violation/Reminder Notice1 linked violation
March 29, 2010State Compliance achieved1 linked violation
January 12, 2010State Violation/Reminder Notice2 linked violations
December 12, 2005State Public Notification received1 linked violation
November 8, 2005State Violation/Reminder Notice1 linked violation
November 8, 2005State Public Notification requested1 linked violation
October 26, 2005State Public Notification received1 linked violation
October 10, 2005State Compliance achieved13 linked violations
October 7, 2005State Violation/Reminder Notice1 linked violation
October 7, 2005State Public Notification requested1 linked violation
June 17, 2005State Public Notification received2 linked violations
June 3, 2005State Violation/Reminder Notice2 linked violations
June 3, 2005State Public Notification requested2 linked violations
April 21, 2005State Public Notification received2 linked violations
April 12, 2005State Compliance achieved2 linked violations
April 8, 2005State Public Notification requested2 linked violations
April 8, 2005State Violation/Reminder Notice2 linked violations
January 19, 2005State Bilateral Compliance Agreement signed2 linked violations
January 18, 2005State Public Notification received1 linked violation
January 7, 2005State Public Notification requested1 linked violation
January 7, 2005State Violation/Reminder Notice1 linked violation
October 27, 2004State Formal Notice of Violation issued3 linked violations
October 19, 2004State Violation/Reminder Notice1 linked violation
August 30, 2004State Public Notification received1 linked violation
July 10, 2004State Violation/Reminder Notice1 linked violation
July 10, 2004State Public Notification requested1 linked violation
June 7, 2004State Compliance achieved2 linked violations
June 1, 2004State Public Notification received3 linked violations
May 21, 2004State Public Notification requested3 linked violations
April 10, 2004State Violation/Reminder Notice1 linked violation
March 23, 2004State Bilateral Compliance Agreement signed13 linked violations
March 8, 2004State Public Notification received1 linked violation
January 26, 2004State Formal Notice of Violation issued12 linked violations
January 10, 2004State Public Notification requested1 linked violation
January 10, 2004State Violation/Reminder Notice2 linked violations
September 22, 2003State Public Notification received1 linked violation
July 14, 2003State Public Notification received1 linked violation
May 14, 2003State Public Notification requested1 linked violation
May 14, 2003State Violation/Reminder Notice1 linked violation
October 15, 1999State Public Notification requested1 linked violation
October 15, 1999State Violation/Reminder Notice1 linked violation

Contact

SMITH, JENNIFER

773-499-7255

CHICAGO, IL 60631