Clinton County, KY: the USDA septic-suitability picture
Very limited
USDA puts Clinton County, KY at "Very limited" for septic absorption fields, the dominant reading across 65.6% of the county's soil. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 65.6% of the county. For scale: 197.063 square miles and 9,183 people call Clinton County home.
Before you rely on this for one lot
This is a countywide, area-weighted figure across every soil survey map unit in Clinton County, KY - never a reading for one specific parcel. 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 Clinton County, KY
Clinton 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.
Clinton County's rank among Kentucky counties
Among the 3,058 rated counties on this site, Clinton County, KY ranks 2,592 most-constrained nationally, and 105 of 119 within Kentucky.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems