Septic soil in Wasatch County, UT, by the numbers

Very limited

72.3% of Wasatch County, UT's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. That reading means a conventional system is a poor bet here - 72.3% of Wasatch County lands in the strictest "very limited" bucket USDA uses. Wasatch County covers 1,176.952 square miles and counts 37,858 residents.

This is a county figure, not a parcel figure

Two lots a mile apart in Wasatch County can carry different soil, even though they share one countywide rating. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Wasatch County.

System cost, conventional vs. engineered

Given Wasatch 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.

Wasatch County's rank among Utah counties

Nationally, Wasatch County, UT is the 2,391-most-constrained of 3,058 rated counties for septic soil. Within Utah alone it ranks 18 of 28.

Related guides

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