Aiken County, SC's soil, for a septic absorption field

Very limited

In Aiken County, SC, 68.9% of the surveyed land carries a "Very limited" rating for a standard septic drain field. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 68.9% of the county. Aiken County covers 1,070.676 square miles and counts 179,245 residents.

This is a county figure, not a parcel figure

Aiken County's rating is an average across the whole county, not a promise about any one lot inside it. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Aiken County.

System cost, conventional vs. engineered

Given Aiken County's rating, plan for the engineered-system range rather than the conventional one. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.

Where this sits nationally

Nationally, Aiken County, SC is the 2,500-most-constrained of 3,058 rated counties for septic soil. Within South Carolina alone it ranks 26 of 46.

Related guides

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