Septic soil in Davie County, NC, by the numbers

Very limited

54.2% of Davie County, NC's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 54.2% of the county. Davie County covers 263.699 square miles and counts 45,383 residents.

This is a county figure, not a parcel figure

Davie 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 Davie County.

System cost, conventional vs. engineered

Given Davie 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.

How Davie County, NC compares

Nationally, Davie County, NC is the 2,836-most-constrained of 3,058 rated counties for septic soil. Within North Carolina alone it ranks 81 of 97.

Before you act on this

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