Franklin County's SSURGO septic rating

Very limited

USDA puts Franklin County, KY at "Very limited" for septic absorption fields, the dominant reading across 88.1% of the county's soil. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 88.1% of Franklin County's land. For scale: 207.912 square miles and 52,442 people call Franklin County home.

Before you rely on this for one lot

Two lots a mile apart in Franklin County can carry different soil, even though they share one countywide rating. 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 Franklin County, KY

Franklin 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.

How Franklin County, KY compares

Among the 3,058 rated counties on this site, Franklin County, KY ranks 1,458 most-constrained nationally, and 68 of 119 within Kentucky.

Further reading

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