Source document
Welcome, MN 2021 Consumer Confidence Report
The original annual drinking-water report. Every number on the Welcome, MN water quality page is pulled from this document.
The Welcome, MN figures for 2021 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Welcome, MN 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