Magoffin County, KY: the USDA septic-suitability picture

Very limited

Magoffin County, KY: USDA's soil survey calls 97.6% 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 97.6% of the county. For scale: 308.443 square miles and 11,118 people call Magoffin County home.

Before you rely on this for one lot

USDA's survey covers the whole of Magoffin County, KY at once, not any single address. 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 Magoffin County, KY

Magoffin 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.

Where this sits nationally

Among the 3,058 rated counties on this site, Magoffin County, KY ranks 309 most-constrained nationally, and 5 of 119 within Kentucky.

Related guides

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