Is WINTHROP HARBOR required to publish a Consumer Confidence Report?

Yes. WINTHROP HARBOR is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is WINTHROP HARBOR’s next Consumer Confidence Report due?

WINTHROP HARBOR’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

WINTHROP HARBOR, IL · Lake County

WINTHROP HARBOR Water System

Consumer Confidence Report status

WINTHROP HARBOR must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 7 items for WINTHROP HARBOR that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)

WINTHROP HARBOR is one of 248 community water systems in Illinois in the 3,301 to 10,000 people size category, serving 6,565 people from surface water.

As of August 1, 2026, its federal record holds 35 entries between 1977 and 2026, of which 7 remain open; none are health-based.

Of the 35, 15 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Consumer Confidence Rule, the Lead and Copper Rule, and the Total Coliform Rules.

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2026 – March 31, 2026
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2026 – March 31, 2026
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2026
Unaddressed
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
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2023 – December 31, 2023
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – February 23, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – August 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
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2023 – September 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
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)
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

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026 – March 31, 2026	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
January 1, 2026 – March 31, 2026	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2026	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
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 – December 31, 2023	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2023 – February 23, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2023 – August 30, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	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 – September 30, 2023	Monitoring and Reporting (DBP)	TTHM	—	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
August 1, 1999 – August 31, 1999	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	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

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

January 27, 2026State Public Notification requested1 linked violation
January 27, 2026State Violation/Reminder Notice1 linked violation
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 received2 linked violations
December 9, 2024State Public Notification received1 linked violation
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 Public Notification requested2 linked violations
January 12, 2024State Violation/Reminder Notice2 linked violations
December 19, 2023State Violation/Reminder Notice1 linked violation
October 11, 2023State Public Notification requested1 linked violation
October 11, 2023State Violation/Reminder Notice1 linked violation
October 11, 2023State Public Notification requested2 linked violations
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 Public Notification requested1 linked violation
October 20, 2020State Violation/Reminder Notice1 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 Public Notification requested1 linked violation
October 16, 2007State Violation/Reminder Notice1 linked violation
October 17, 2005State Compliance achieved2 linked violations
August 24, 2005State Violation/Reminder Notice2 linked violations
September 17, 2002State Violation/Reminder Notice4 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

Common questions

Is WINTHROP HARBOR required to publish a Consumer Confidence Report?: Yes. WINTHROP HARBOR is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is WINTHROP HARBOR’s next Consumer Confidence Report due?: WINTHROP HARBOR’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WINTHROP HARBOR have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 7 items for WINTHROP HARBOR that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

NEARGARDER, TIMOTHY

847-872-5275

WINTHROP HARBOR, IL 60096