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