Source document
Casey, IL 2008 Consumer Confidence Report
The original annual drinking-water report. Every number on the Casey, IL water quality page is pulled from this document.
The Casey, IL figures for 2008 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Casey, 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