What Orangeburg County, SC's soil rates for a septic system

Very limited

Soil across 86% of Orangeburg County, SC rates "Very limited" in USDA's septic-absorption-field interpretation. 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. Orangeburg County, SC is 1,106.379 square miles with a population of 83,129.

What Orangeburg County's reading doesn't cover

This is a countywide, area-weighted figure across every soil survey map unit in Orangeburg County, SC - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Orangeburg County will actually do.

What a system would cost here

With 86% of Orangeburg 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.

Orangeburg County's rank among South Carolina counties

Nationally, Orangeburg County, SC is the 1,617-most-constrained of 3,058 rated counties for septic soil. Within South Carolina alone it ranks 12 of 46.

Before you act on this

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