Shelby County, KY: the USDA septic-suitability picture

Very limited

Shelby County, KY: USDA's soil survey calls 98.2% 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 98.2% of the county. For scale: 379.795 square miles and 50,124 people call Shelby County home.

Before you rely on this for one lot

Nothing about Shelby County, KY'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 Shelby County, KY

Shelby 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 Shelby County, KY compares

Among the 3,058 rated counties on this site, Shelby County, KY ranks 215 most-constrained nationally, and 2 of 119 within Kentucky.

Before you act on this

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