Septic suitability in El Dorado County, CA

Very limited

El Dorado County, CA's SSURGO dominant class comes back "Very limited", covering 92.7% of the county. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. For scale: 1,707.842 square miles and 192,823 people call El Dorado County home.

Before you rely on this for one lot

El Dorado County's rating is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).

Budgeting for a system in El Dorado County, CA

El Dorado County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. Conventional systems run $3,000-$8,000 where they pass; where they don't, engineered alternatives (mound or aerobic treatment, whichever the health department requires) run $10,000-$40,000 - budget toward the higher figure until a perc test says otherwise.

El Dorado County's rank among California counties

Among the 3,058 rated counties on this site, El Dorado County, CA ranks 959 most-constrained nationally, and 21 of 57 within California.

Before you act on this

How this rating is built, and its real limits · Conventional vs. engineered septic systems