Hickman County, KY: the USDA septic-suitability picture
Very limited
USDA puts Hickman County, KY at "Very limited" for septic absorption fields, the dominant reading across 92% of the county's soil. That reading means a conventional system is a poor bet here - 92% of Hickman County lands in the strictest "very limited" bucket USDA uses. The county spans 242.331 square miles, home to 4,393 people.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Hickman County, KY - never a reading for one specific parcel. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Hickman County: conventional vs. engineered cost
92% of Hickman County carrying a "Very limited" reading changes the realistic budget here. 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 Hickman County, KY compares
Among the 3,058 rated counties on this site, Hickman County, KY ranks 1,051 most-constrained nationally, and 54 of 119 within Kentucky.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems