Crawford County, KS's soil, for a septic absorption field

Very limited

99% of Crawford County, KS's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption 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. Crawford County, KS is 589.771 square miles with a population of 38,904.

What Crawford County's reading doesn't cover

Two lots a mile apart in Crawford 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 Crawford County will actually do.

What a system would cost here

With 99% of Crawford 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.

Crawford County's rank among Kansas counties

Nationally, Crawford County, KS is the 89-most-constrained of 3,058 rated counties for septic soil. Within Kansas alone it ranks 8 of 105.

Before you act on this

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