Sequatchie County, TN's soil, for a septic absorption field

Very limited

In Sequatchie County, TN, 85.4% 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 85.4% of the county. Sequatchie County covers 265.851 square miles and counts 17,620 residents.

This is a county figure, not a parcel figure

Nothing about Sequatchie 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 Sequatchie County.

System cost, conventional vs. engineered

Given Sequatchie 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.

Sequatchie County's rank among Tennessee counties

Nationally, Sequatchie County, TN is the 1,662-most-constrained of 3,058 rated counties for septic soil. Within Tennessee alone it ranks 34 of 95.

Related guides

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