Septic soil in Greene County, MO, by the numbers

Very limited

89.1% of Greene County, MO's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. Greene County, MO is 675.329 square miles with a population of 307,942.

What Greene County's reading doesn't cover

This is a countywide, area-weighted figure across every soil survey map unit in Greene County, MO - 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 Greene County will actually do.

What a system would cost here

With 89.1% of Greene 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.

Where this sits nationally

Nationally, Greene County, MO is the 1,361-most-constrained of 3,058 rated counties for septic soil. Within Missouri alone it ranks 81 of 114.

Before you act on this

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