Wise County, TX's soil, for a septic absorption field
Very limited
In Wise County, TX, 74.6% of the surveyed land carries a "Very limited" rating for a standard septic drain field. That reading means a conventional system is a poor bet here - 74.6% of Wise County lands in the strictest "very limited" bucket USDA uses. Wise County covers 904.454 square miles and counts 81,275 residents.
This is a county figure, not a parcel figure
Nothing about Wise County, TX's SSURGO figure applies to a specific address - it's a county-wide average. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Wise County.
System cost, conventional vs. engineered
Given Wise County's rating, plan for the engineered-system range rather than the conventional one. 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, Wise County, TX is the 2,304-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 181 of 253.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems