Brooks County, GA's soil, for a septic absorption field
Very limited
82.9% of Brooks County, GA's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 82.9% of Brooks County's land. Brooks County covers 493.184 square miles and counts 16,344 residents.
This is a county figure, not a parcel figure
Two lots a mile apart in Brooks County can carry different soil, even though they share one countywide rating. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Brooks County.
System cost, conventional vs. engineered
Given Brooks 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 Brooks County, GA compares
Nationally, Brooks County, GA is the 1,870-most-constrained of 3,058 rated counties for septic soil. Within Georgia alone it ranks 57 of 159.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems