WINTHROP HARBOR, IL · Lake County

WINTHROP HARBOR Water System

Current status

6 items on record are 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): IL0971950
System type: Community Water System
Population served: 6,565
Service connections: 2,172
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
January 12, 2025 – January 22, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 11, 2024 – November 15, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 11, 2024 – November 15, 2024
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2024
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – July 17, 2024
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – February 23, 2024
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2023 – September 30, 2023
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023
Unaddressed
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2023 – September 30, 2023
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – August 30, 2023
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2022
Unaddressed
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2021
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
October 21, 2021
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – August 16, 2021
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2020 – April 21, 2021
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2020 – September 29, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2019 – July 31, 2019
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2018 – October 4, 2018
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2017 – January 25, 2018
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2017 – July 21, 2017
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – August 5, 2016
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2007 – September 30, 2007
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2005 – October 17, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1999 – August 31, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1996 – July 31, 1996
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
December 1, 1995 – December 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 1995 – December 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1995 – August 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1995 – July 31, 1995
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1995 – July 31, 1995
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
July 1, 1995 – July 31, 1995
Archived
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
July 1, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
January 12, 2025 – January 22, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 11, 2024 – November 15, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 11, 2024 – November 15, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
July 1, 2024 – July 17, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2023 – February 23, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
July 1, 2023 – September 30, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2023 – August 30, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 30, 2022	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
December 30, 2021	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
October 21, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
July 1, 2021 – August 16, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 30, 2020 – April 21, 2021	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2020 – September 29, 2021	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2019 – July 31, 2019	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2018 – October 4, 2018	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
December 30, 2017 – January 25, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2017 – July 21, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2016 – August 5, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
September 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2005 – October 17, 2005	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
August 1, 1999 – August 31, 1999	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1996 – July 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 1995 – December 31, 1995	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
December 1, 1995 – December 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 1995 – August 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1995 – July 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1995 – July 31, 1995	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
July 1, 1995 – July 31, 1995	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
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

August 21, 2025State Violation/Reminder Notice1 linked violation
February 18, 2025State Violation/Reminder Notice1 linked violation
February 5, 2025State Public Notification received2 linked violations
January 22, 2025State Compliance achieved1 linked violation
December 9, 2024State Public Notification received1 linked violation
December 9, 2024State Public Notification received2 linked violations
November 19, 2024State Violation/Reminder Notice1 linked violation
November 19, 2024State Violation/Reminder Notice1 linked violation
November 15, 2024State Compliance achieved1 linked violation
November 15, 2024State Compliance achieved1 linked violation
August 6, 2024State Violation/Reminder Notice2 linked violations
July 17, 2024State Compliance achieved1 linked violation
February 23, 2024State Compliance achieved5 linked violations
January 12, 2024State Violation/Reminder Notice2 linked violations
January 12, 2024State Public Notification requested2 linked violations
December 19, 2023State Violation/Reminder Notice1 linked violation
October 11, 2023State Public Notification requested2 linked violations
October 11, 2023State Public Notification requested1 linked violation
October 11, 2023State Violation/Reminder Notice1 linked violation
October 11, 2023State Violation/Reminder Notice2 linked violations
August 30, 2023State Compliance achieved1 linked violation
July 24, 2023State Violation/Reminder Notice1 linked violation
January 24, 2023State Violation/Reminder Notice1 linked violation
January 19, 2022State Violation/Reminder Notice1 linked violation
November 3, 2021State Violation/Reminder Notice1 linked violation
September 29, 2021State Compliance achieved1 linked violation
August 16, 2021State Compliance achieved1 linked violation
July 22, 2021State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 21, 2021State Compliance achieved1 linked violation
January 6, 2021State Violation/Reminder Notice1 linked violation
October 20, 2020State Violation/Reminder Notice1 linked violation
October 20, 2020State Public Notification requested1 linked violation
July 31, 2019State Compliance achieved1 linked violation
July 17, 2019State Violation/Reminder Notice1 linked violation
October 4, 2018State Compliance achieved1 linked violation
August 21, 2018State Violation/Reminder Notice1 linked violation
January 25, 2018State Compliance achieved1 linked violation
January 2, 2018State Violation/Reminder Notice1 linked violation
July 21, 2017State Compliance achieved1 linked violation
July 17, 2017State Violation/Reminder Notice1 linked violation
August 5, 2016State Compliance achieved1 linked violation
July 18, 2016State Violation/Reminder Notice1 linked violation
January 27, 2012State Compliance achieved1 linked violation
January 6, 2012State Violation/Reminder Notice1 linked violation
April 1, 2008State Compliance achieved1 linked violation
November 13, 2007State Public Notification received1 linked violation
October 16, 2007State Violation/Reminder Notice1 linked violation
October 16, 2007State Public Notification requested1 linked violation
October 17, 2005State Compliance achieved2 linked violations
September 17, 2002State Public Notification requested5 linked violations
October 15, 1999State Violation/Reminder Notice1 linked violation
October 15, 1999State Public Notification requested1 linked violation
September 29, 1996State Public Notification requested1 linked violation
September 29, 1996State Violation/Reminder Notice1 linked violation
August 9, 1996State Public Notification received1 linked violation
March 3, 1996State Violation/Reminder Notice2 linked violations
March 3, 1996State Public Notification requested2 linked violations
November 4, 1995State Public Notification requested1 linked violation
November 4, 1995State Violation/Reminder Notice1 linked violation
October 23, 1995State Public Notification received1 linked violation
October 4, 1995State Public Notification received3 linked violations
October 1, 1995State Public Notification requested3 linked violations
October 1, 1995State Violation/Reminder Notice3 linked violations

Contact

NEARGARDER, TIMOTHY

847-872-5275

WINTHROP HARBOR, IL 60096