Source document
Hill City Water District, IL 2019 Consumer Confidence Report
The original annual drinking-water report. Every number on the Hill City Water District, IL water quality page is pulled from this document.
The Hill City Water District, IL figures for 2019 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Hill City Water District, 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