Source document
Rau School District No 21, MT 2025 Consumer Confidence Report
The original annual drinking-water report. Every number on the Rau School District No 21, MT water quality page is pulled from this document.
The Rau School District No 21, MT figures for 2025 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Rau School District No 21, MT 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