Source document

Winthrop Harbor, IL 2022 Consumer Confidence Report

The original annual drinking-water report. Every number on the Winthrop Harbor, IL water quality page is pulled from this document.

The Winthrop Harbor, IL figures for 2022 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Winthrop Harbor, IL water quality page is transcribed from that public dataset, and you can verify it against the same source below.

View the source dataset ↗

https://echo.epa.gov/tools/data-downloads/sdwa-download-summary