Source document
River Ridge School, IL 2006 Consumer Confidence Report
The original annual drinking-water report. Every number on the River Ridge School, IL water quality page is pulled from this document.
The River Ridge 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 River Ridge 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