Septic soil in Edgecombe County, NC, by the numbers

Very limited

In Edgecombe County, NC, 72% of the surveyed land carries a "Very limited" rating for a standard septic drain field. 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. Edgecombe County, NC is 505.436 square miles with a population of 49,124.

What Edgecombe County's reading doesn't cover

Two lots a mile apart in Edgecombe County can carry different soil, even though they share one countywide rating. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Edgecombe County will actually do.

What a system would cost here

With 72% of Edgecombe County rating "Very limited", a standard gravity system is not a safe assumption here. 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, Edgecombe County, NC is the 2,401-most-constrained of 3,058 rated counties for septic soil. Within North Carolina alone it ranks 51 of 97.

Before you act on this

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