Septic soil in Motley County, TX, by the numbers
Very limited
In Motley County, TX, 61.5% of the surveyed land carries a "Very limited" rating for a standard septic drain field. Practically, that rules out a simple gravity system for most of the county - 61.5% of it sits in USDA's most-constrained bucket. Motley County, TX is 989.566 square miles with a population of 1,015.
What Motley County's reading doesn't cover
USDA's survey covers the whole of Motley County, TX at once, not any single address. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Motley County will actually do.
What a system would cost here
With 61.5% of Motley 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 Motley County, TX compares
Nationally, Motley County, TX is the 2,698-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 216 of 253.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems