Source document
Ridgewood Ledges Water Association, IL 2007 Consumer Confidence Report
The original annual drinking-water report. Every number on the Ridgewood Ledges Water Association, IL water quality page is pulled from this document.
The Ridgewood Ledges Water Association, IL figures for 2007 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Ridgewood Ledges Water Association, 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