Overton County's SSURGO septic rating

Very limited

Overton County, TN: USDA's soil survey calls 82% of the county "Very limited" for a septic leach field. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 82% of the county. For scale: 433.488 square miles and 23,551 people call Overton County home.

Before you rely on this for one lot

Nothing about Overton County, TN's SSURGO figure applies to a specific address - it's a county-wide average. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).

Budgeting for a system in Overton County, TN

Overton County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. Conventional systems run $3,000-$8,000 where they pass; where they don't, engineered alternatives (mound or aerobic treatment, whichever the health department requires) run $10,000-$40,000 - budget toward the higher figure until a perc test says otherwise.

Overton County's rank among Tennessee counties

Among the 3,058 rated counties on this site, Overton County, TN ranks 1,927 most-constrained nationally, and 50 of 95 within Tennessee.

Further reading

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