Cuming County, NE's soil, for a septic absorption field

Very limited

79.9% of Cuming County, NE'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 79.9% of Cuming County's land. Cuming County covers 570.49 square miles and counts 8,952 residents.

This is a county figure, not a parcel figure

USDA's survey covers the whole of Cuming County, NE at once, not any single address. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Cuming County.

System cost, conventional vs. engineered

Given Cuming 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, Cuming County, NE is the 2,051-most-constrained of 3,058 rated counties for septic soil. Within Nebraska alone it ranks 45 of 93.

Further reading

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