What Bledsoe County, TN's soil rates for a septic system
Very limited
89.4% of Bledsoe County, TN's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. That reading means a conventional system is a poor bet here - 89.4% of Bledsoe County lands in the strictest "very limited" bucket USDA uses. Bledsoe County covers 406.555 square miles and counts 15,591 residents.
This is a county figure, not a parcel figure
Nothing about Bledsoe County, TN's SSURGO figure applies to a specific address - it's a county-wide average. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Bledsoe County.
System cost, conventional vs. engineered
Given Bledsoe 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 Bledsoe County, TN compares
Nationally, Bledsoe County, TN is the 1,335-most-constrained of 3,058 rated counties for septic soil. Within Tennessee alone it ranks 23 of 95.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems