Septic soil in Comanche County, KS, by the numbers
Very limited
64.6% of Comanche 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. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 64.6% of the county. Comanche County, KS is 788.298 square miles with a population of 1,694.
What Comanche County's reading doesn't cover
This is a countywide, area-weighted figure across every soil survey map unit in Comanche County, KS - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Comanche County will actually do.
What a system would cost here
With 64.6% of Comanche 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.
Comanche County's rank among Kansas counties
Nationally, Comanche County, KS is the 2,621-most-constrained of 3,058 rated counties for septic soil. Within Kansas alone it ranks 85 of 105.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems