Tooele County's SSURGO septic rating

Very limited

USDA puts Tooele County, UT at "Very limited" for septic absorption fields, the dominant reading across 79.4% of the county's soil. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 79.4% of the county. For scale: 7,040.271 square miles and 84,488 people call Tooele County home.

Before you rely on this for one lot

USDA's survey covers the whole of Tooele County, UT at once, not any single address. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).

Budgeting for a system in Tooele County, UT

Tooele County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. Conventional systems run $3,000-$8,000 where they pass; where they don't, engineered alternatives (mound or aerobic treatment, whichever the health department requires) run $10,000-$40,000 - budget toward the higher figure until a perc test says otherwise.

Where this sits nationally

Among the 3,058 rated counties on this site, Tooele County, UT ranks 2,070 most-constrained nationally, and 10 of 28 within Utah.

Before you act on this

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