Septic suitability in Alpine County, CA

Very limited

USDA puts Alpine County, CA at "Very limited" for septic absorption fields, the dominant reading across 95.6% of the county's soil. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 95.6% of the county. For scale: 738.34 square miles and 1,099 people call Alpine County home.

Before you rely on this for one lot

Nothing about Alpine County, CA's SSURGO figure applies to a specific address - it's a county-wide average. 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 Alpine County, CA

Alpine 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.

Alpine County's rank among California counties

Among the 3,058 rated counties on this site, Alpine County, CA ranks 589 most-constrained nationally, and 10 of 57 within California.

Before you act on this

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