Septic suitability in Runnels County, TX
Very limited
USDA puts Runnels County, TX at "Very limited" for septic absorption fields, the dominant reading across 68% of the county's soil. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 68% of the county. For scale: 1,051.07 square miles and 9,751 people call Runnels County home.
Before you rely on this for one lot
Nothing about Runnels County, TX's SSURGO figure applies to a specific address - it's a county-wide average. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).
Budgeting for a system in Runnels County, TX
Runnels County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. Conventional systems run $3,000-$8,000 where they pass; where they don't, engineered alternatives (mound or aerobic treatment, whichever the health department requires) run $10,000-$40,000 - budget toward the higher figure until a perc test says otherwise.
Runnels County's rank among Texas counties
Among the 3,058 rated counties on this site, Runnels County, TX ranks 2,529 most-constrained nationally, and 203 of 253 within Texas.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems