Source document

Mount Sterling, IL 2021 Consumer Confidence Report

The original annual drinking-water report. Every number on the Mount Sterling, IL water quality page is pulled from this document.

The Mount Sterling, IL figures for 2021 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Mount Sterling, 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