Source document
Spring Valley Wsc, TX 1999 Consumer Confidence Report
The original annual drinking-water report. Every number on the Spring Valley Wsc, TX water quality page is pulled from this document.
The Spring Valley Wsc, TX figures for 1999 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Spring Valley Wsc, 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