No health-based violations on EPA record since 2016.
Serves about 6,565 people (2,172 connections) with surface water bought from Lake County Public Water District.
From EPA's record for IL0971950. PurityMap is independent of Winthrop Harbor.
Are you this utility? Correct this listing →
No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-10-15 | UCMR5 Analytical Results: WINTHROP HARBOR (IL0971950) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Winthrop Harbor's phone number on EPA record is 847-872-5275. Its mailing address is VILLAGE OF WINTHROP HARBOR, 830 SHERIDAN RD., WINTHROP HARBOR, IL 60096.
According to EPA's record, Winthrop Harbor uses surface water bought from Lake County Public Water District.
No health-based violations on EPA record since 2016. EPA also lists 26 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Winthrop Harbor's latest lead and copper round, which ended in June 2026, was 5.7 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Winthrop Harbor. Its phone number on EPA record is 847-872-5275. Its mailing address on EPA record is VILLAGE OF WINTHROP HARBOR, 830 SHERIDAN RD., WINTHROP HARBOR, IL 60096. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.