Septic suitability in Kiowa County, CO
Very limited
Kiowa County, CO's SSURGO dominant class comes back "Very limited", covering 51.3% of the county. 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. The county spans 1,767.809 square miles, home to 1,392 people.
What this number does and doesn't tell you
USDA's survey covers the whole of Kiowa County, CO at once, not any single address. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Kiowa County: conventional vs. engineered cost
51.3% of Kiowa County carrying a "Very limited" reading changes the realistic budget here. 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.
Where this sits nationally
Among the 3,058 rated counties on this site, Kiowa County, CO ranks 2,854 most-constrained nationally, and 55 of 63 within Colorado.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems