Source document
Onion Creek School District, WA 2024 Consumer Confidence Report
The original annual drinking-water report. Every number on the Onion Creek School District, WA water quality page is pulled from this document.
The Onion Creek School District, WA figures for 2024 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Onion Creek School District, WA 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