Source document
The Learning Den, CT 2021 Consumer Confidence Report
The original annual drinking-water report. Every number on the The Learning Den, CT water quality page is pulled from this document.
The The Learning Den, CT figures for 2021 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the The Learning Den, CT 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