Source document
Dolan Education Center, IL 2022 Consumer Confidence Report
The original annual drinking-water report. Every number on the Dolan Education Center, IL water quality page is pulled from this document.
The Dolan Education Center, 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 Dolan Education Center, 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