Source document
Ponderosa Water Company, SD 2025 Consumer Confidence Report
The original annual drinking-water report. Every number on the Ponderosa Water Company, SD water quality page is pulled from this document.
The Ponderosa Water Company, SD figures for 2025 come from EPA's national Safe Drinking Water database (SDWIS / ECHO) — not a single utility-published PDF. Every value on the Ponderosa Water Company, SD 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