Fremont County's SSURGO septic rating

Very limited

USDA puts Fremont County, WY at "Very limited" for septic absorption fields, the dominant reading across 65.6% of the county's soil. Practically, that rules out a simple gravity system for most of the county - 65.6% of it sits in USDA's most-constrained bucket. For scale: 9,183.597 square miles and 39,721 people call Fremont County home.

Before you rely on this for one lot

Nothing about Fremont County, WY's SSURGO figure applies to a specific address - it's a county-wide average. 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 Fremont County, WY

Fremont 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.

How Fremont County, WY compares

Among the 3,058 rated counties on this site, Fremont County, WY ranks 2,591 most-constrained nationally, and 14 of 22 within Wyoming.

Before you act on this

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