Source document

Oneida, IL 2021 Consumer Confidence Report

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

The Oneida, 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 Oneida, 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