Septic soil in Perquimans County, NC, by the numbers

Very limited

In Perquimans County, NC, 72.9% 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 72.9% of the county. Perquimans County, NC is 247.176 square miles with a population of 13,460.

What Perquimans County's reading doesn't cover

Perquimans County's rating is an average across the whole county, not a promise about any one lot inside it. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Perquimans County will actually do.

What a system would cost here

With 72.9% of Perquimans 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.

Perquimans County's rank among North Carolina counties

Nationally, Perquimans County, NC is the 2,377-most-constrained of 3,058 rated counties for septic soil. Within North Carolina alone it ranks 49 of 97.

Before you act on this

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