Septic soil in Furnas County, NE, by the numbers

Very limited

Soil across 58.3% of Furnas County, NE rates "Very limited" in USDA's septic-absorption-field interpretation. Practically, that rules out a simple gravity system for most of the county - 58.3% of it sits in USDA's most-constrained bucket. Furnas County covers 719.204 square miles and counts 4,468 residents.

This is a county figure, not a parcel figure

Nothing about Furnas County, NE's SSURGO figure applies to a specific address - it's a county-wide average. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Furnas County.

System cost, conventional vs. engineered

Given Furnas County's rating, plan for the engineered-system range rather than the conventional one. 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, Furnas County, NE is the 2,758-most-constrained of 3,058 rated counties for septic soil. Within Nebraska alone it ranks 82 of 93.

Related guides

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