Source document

Allendale Association, IL 2025 Consumer Confidence Report

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

The Allendale Association, IL figures for 2025 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Allendale Association, 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