Source document
Secor, IL 2000 Consumer Confidence Report
The original annual drinking-water report. Every number on the Secor, IL water quality page is pulled from this document.
The Secor, IL figures for 2000 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Secor, 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