The Water Map

Source document

Chester, IL 2001 Consumer Confidence Report

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

The Chester, IL figures for 2001 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Chester, 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