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