Source document
Williamstown Boro Auth, PA 2007 Consumer Confidence Report
The original annual drinking-water report. Every number on the Williamstown Boro Auth, PA water quality page is pulled from this document.
The Williamstown Boro Auth, PA figures for 2007 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Williamstown Boro Auth, PA 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