Septic suitability in Poinsett County, AR
Very limited
USDA puts Poinsett County, AR at "Very limited" for septic absorption fields, the dominant reading across 97.3% of the county's soil. Practically, that rules out a simple gravity system for most of the county - 97.3% of it sits in USDA's most-constrained bucket. The county spans 758.295 square miles, home to 22,300 people.
What this number does and doesn't tell you
USDA's survey covers the whole of Poinsett County, AR at once, not any single address. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Poinsett County: conventional vs. engineered cost
97.3% of Poinsett County carrying a "Very limited" reading changes the realistic budget here. 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, Poinsett County, AR ranks 341 most-constrained nationally, and 5 of 75 within Arkansas.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems