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