Source document
Duval County Crd Concepcion, TX 1997 Consumer Confidence Report
The original annual drinking-water report. Every number on the Duval County Crd Concepcion, TX water quality page is pulled from this document.
The Duval County Crd Concepcion, 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 Duval County Crd Concepcion, 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