Source document
Oakford, IL 1994 Consumer Confidence Report
The original annual drinking-water report. Every number on the Oakford, IL water quality page is pulled from this document.
The Oakford, IL figures for 1994 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Oakford, 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