Public water system record
Winthrop Harbor
Serves Winthrop Harbor, Lake County, IL · 6,565 people served
Federal records show no health-based violations and 23 monitoring/reporting issues for Winthrop Harbor in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 23
Key facts
- Winthrop Harbor buys its water from Lake County Public Water District.
- Record on file since 1977, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 1,492 unknown out of 2,338 service lines.
Check whether Winthrop Harbor serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Public Notice
OTHER
|
Jan 12, 2025 | Resolved |
|
Public Notice
OTHER
|
Oct 11, 2024 | Resolved |
|
Public Notice
OTHER
|
Oct 11, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Active |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2022 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2021 | Active |
|
Public Notice
OTHER
|
Oct 21, 2021 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
Full record since 1977
EPA's records for Winthrop Harbor go back to 1977. Before October 19, 2016 they list 7 health-based violations (1 resolved, 6 archived by EPA without a recorded fix) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1990s | 6 | 2 |
| 2000s | 1 | 2 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 0 | 4 |
| 2020s | 0 | 19 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2007, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1995 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jul 1, 1995 | Archived |
Where the water comes from
Winthrop Harbor buys its water from Lake County Public Water District. It lists no wells or intakes of its own.
Buys water from
- Lake County Public Water District Zion, IL
Annual water quality report
Winthrop Harbor must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Illinois.
Certified drinking water labs by state EPA guidance for private wells