Source document
Post Oak Sud, TX 1996 Consumer Confidence Report
The original annual drinking-water report. Every number on the Post Oak Sud, TX water quality page is pulled from this document.
The Post Oak Sud, TX figures for 1996 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Post Oak Sud, TX 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