Source document
Gavin South School, IL 2005 Consumer Confidence Report
The original annual drinking-water report. Every number on the Gavin South School, IL water quality page is pulled from this document.
The Gavin South School, IL figures for 2005 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Gavin South 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