Septic soil in Lincoln County, AR, by the numbers

Very limited

Soil across 79.1% of Lincoln County, AR rates "Very limited" in USDA's septic-absorption-field interpretation. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 79.1% of the county. Lincoln County, AR is 559.466 square miles with a population of 12,868.

What Lincoln County's reading doesn't cover

Two lots a mile apart in Lincoln County can carry different soil, even though they share one countywide rating. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Lincoln County will actually do.

What a system would cost here

With 79.1% of Lincoln County rating "Very limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.

How Lincoln County, AR compares

Nationally, Lincoln County, AR is the 2,090-most-constrained of 3,058 rated counties for septic soil. Within Arkansas alone it ranks 72 of 75.

Before you act on this

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