Source document
Ophiem Pws, IL 1994 Consumer Confidence Report
The original annual drinking-water report. Every number on the Ophiem Pws, IL water quality page is pulled from this document.
The Ophiem Pws, 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 Ophiem Pws, 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