Source document
Prairie Grove School, IL 2006 Consumer Confidence Report
The original annual drinking-water report. Every number on the Prairie Grove School, IL water quality page is pulled from this document.
The Prairie Grove School, IL figures for 2006 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Prairie Grove School, 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