Source document
Custer School Dist No 15, MT 2023 Consumer Confidence Report
The original annual drinking-water report. Every number on the Custer School Dist No 15, MT water quality page is pulled from this document.
The Custer School Dist No 15, MT figures for 2023 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Custer School Dist No 15, 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