Source document
Brownsville Navigation District, TX 1997 Consumer Confidence Report
The original annual drinking-water report. Every number on the Brownsville Navigation District, TX water quality page is pulled from this document.
The Brownsville Navigation District, TX figures for 1997 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Brownsville Navigation District, 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