Shackelford County, TX's soil, for a septic absorption field
Very limited
98.2% of Shackelford County, TX'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. Shackelford County, TX is 914.286 square miles with a population of 3,169.
What Shackelford County's reading doesn't cover
Two lots a mile apart in Shackelford County can carry different soil, even though they share one countywide rating. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Shackelford County will actually do.
What a system would cost here
With 98.2% of Shackelford 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.
How Shackelford County, TX compares
Nationally, Shackelford County, TX is the 225-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 15 of 253.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems