What Rooks County, KS's soil rates for a septic system
Very limited
In Rooks County, KS, 71.2% of the surveyed land carries a "Very limited" rating for a standard septic drain field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 71.2% of Rooks County's land. Rooks County, KS is 890.527 square miles with a population of 4,748.
What Rooks County's reading doesn't cover
Rooks 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 Rooks County will actually do.
What a system would cost here
With 71.2% of Rooks 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.
Where this sits nationally
Nationally, Rooks County, KS is the 2,431-most-constrained of 3,058 rated counties for septic soil. Within Kansas alone it ranks 76 of 105.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems