Source document
El Centro, City of, CA 2006 Consumer Confidence Report
The original annual drinking-water report. Every number on the El Centro, City of, CA water quality page is pulled from this document.
The El Centro, City of, CA figures for 2006 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the El Centro, City of, CA 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