Source document
Mason Water Dept, WV 2025 Consumer Confidence Report
The original annual drinking-water report. Every number on the Mason Water Dept, WV water quality page is pulled from this document.
The Mason Water Dept, WV figures for 2025 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Mason Water Dept, WV 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