Duchesne County, UT's soil, for a septic absorption field

Very limited

In Duchesne County, UT, 83.9% 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 83.9% of Duchesne County's land. Duchesne County covers 3,235.523 square miles and counts 20,803 residents.

This is a county figure, not a parcel figure

Duchesne County's rating is an average across the whole county, not a promise about any one lot inside it. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Duchesne County.

System cost, conventional vs. engineered

Given Duchesne 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, Duchesne County, UT is the 1,790-most-constrained of 3,058 rated counties for septic soil. Within Utah alone it ranks 4 of 28.

Before you act on this

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