Source document

Highland Park, IL 2024 Consumer Confidence Report

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

The Highland Park, IL figures for 2024 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Highland Park, 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