Jefferson County, AR: the USDA septic-suitability picture

Very limited

USDA puts Jefferson County, AR at "Very limited" for septic absorption fields, the dominant reading across 79.1% of the county's soil. Practically, that rules out a simple gravity system for most of the county - 79.1% of it sits in USDA's most-constrained bucket. For scale: 872.346 square miles and 63,672 people call Jefferson County home.

Before you rely on this for one lot

Two lots a mile apart in Jefferson 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 Jefferson County, AR

Jefferson 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.

Jefferson County's rank among Arkansas counties

Among the 3,058 rated counties on this site, Jefferson County, AR ranks 2,086 most-constrained nationally, and 71 of 75 within Arkansas.

Related guides

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