Septic suitability in Lawrence County, KY
Very limited
USDA puts Lawrence County, KY at "Very limited" for septic absorption fields, the dominant reading across 97.5% of the county's soil. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. The county spans 415.598 square miles, home to 15,798 people.
What this number does and doesn't tell you
USDA's survey covers the whole of Lawrence County, KY at once, not any single address. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Lawrence County: conventional vs. engineered cost
97.5% of Lawrence 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.
Where this sits nationally
Among the 3,058 rated counties on this site, Lawrence County, KY ranks 318 most-constrained nationally, and 6 of 119 within Kentucky.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems