King George County, VA's soil, for a septic absorption field

Very limited

74.9% of King George County, VA's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. Practically, that rules out a simple gravity system for most of the county - 74.9% of it sits in USDA's most-constrained bucket. King George County covers 179.628 square miles and counts 28,816 residents.

This is a county figure, not a parcel figure

This is a countywide, area-weighted figure across every soil survey map unit in King George County, VA - never a reading for one specific parcel. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in King George County.

System cost, conventional vs. engineered

Given King George 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 King George County, VA compares

Nationally, King George County, VA is the 2,287-most-constrained of 3,058 rated counties for septic soil. Within Virginia alone it ranks 60 of 110.

Before you act on this

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