Polk County's SSURGO septic rating

Very limited

Polk County, AR's SSURGO dominant class comes back "Very limited", covering 94.7% of the county. That reading means a conventional system is a poor bet here - 94.7% of Polk County lands in the strictest "very limited" bucket USDA uses. For scale: 856.838 square miles and 19,434 people call Polk County home.

Before you rely on this for one lot

Polk County's rating is an average across the whole county, not a promise about any one lot inside it. 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 Polk County, AR

Polk 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.

Where this sits nationally

Among the 3,058 rated counties on this site, Polk County, AR ranks 697 most-constrained nationally, and 17 of 75 within Arkansas.

Related guides

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