Source document
Dr. Thomas Higdon Elementary, MD 2023 Consumer Confidence Report
The original annual drinking-water report. Every number on the Dr. Thomas Higdon Elementary, MD water quality page is pulled from this document.
The Dr. Thomas Higdon Elementary, MD figures for 2023 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Dr. Thomas Higdon Elementary, MD 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