Septic soil in Floyd County, IA, by the numbers

Very limited

Soil across 97.7% of Floyd County, IA rates "Very limited" in USDA's septic-absorption-field interpretation. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 97.7% of Floyd County's land. Floyd County, IA is 500.571 square miles with a population of 15,008.

What Floyd County's reading doesn't cover

Floyd 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 Floyd County will actually do.

What a system would cost here

With 97.7% of Floyd 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 Floyd County, IA compares

Nationally, Floyd County, IA is the 294-most-constrained of 3,058 rated counties for septic soil. Within Iowa alone it ranks 23 of 99.

Before you act on this

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