Cullman County's SSURGO septic rating

Very limited

Cullman County, AL: USDA's soil survey calls 89.1% of the county "Very limited" for a septic leach field. 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. For scale: 734.749 square miles and 92,604 people call Cullman County home.

Before you rely on this for one lot

Two lots a mile apart in Cullman County can carry different soil, even though they share one countywide rating. 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 Cullman County, AL

Cullman 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 Cullman County, AL compares

Among the 3,058 rated counties on this site, Cullman County, AL ranks 1,364 most-constrained nationally, and 16 of 67 within Alabama.

Before you act on this

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