Weston County, WY's soil, for a septic absorption field

Very limited

Soil across 74.5% of Weston County, WY rates "Very limited" in USDA's septic-absorption-field interpretation. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 74.5% of the county. Weston County, WY is 2,398.005 square miles with a population of 6,866.

What Weston County's reading doesn't cover

This is a countywide, area-weighted figure across every soil survey map unit in Weston County, WY - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Weston County will actually do.

What a system would cost here

With 74.5% of Weston County rating "Very limited", a standard gravity system is not a safe assumption here. 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.

Weston County's rank among Wyoming counties

Nationally, Weston County, WY is the 2,310-most-constrained of 3,058 rated counties for septic soil. Within Wyoming alone it ranks 9 of 22.

Before you act on this

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