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

Very limited

82.6% of Sumner 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. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 82.6% of Sumner County's land. Sumner County, KS is 1,181.668 square miles with a population of 22,336.

What Sumner County's reading doesn't cover

Sumner County's rating is an average across the whole county, not a promise about any one lot inside it. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Sumner County will actually do.

What a system would cost here

With 82.6% of Sumner 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 Sumner County, KS compares

Nationally, Sumner County, KS is the 1,885-most-constrained of 3,058 rated counties for septic soil. Within Kansas alone it ranks 55 of 105.

Further reading

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