Grant County's SSURGO septic rating

Very limited

USDA puts Grant County, AR at "Very limited" for septic absorption fields, the dominant reading across 99.1% of the county's soil. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 99.1% of the county. For scale: 631.888 square miles and 18,546 people call Grant County home.

Before you rely on this for one lot

This is a countywide, area-weighted figure across every soil survey map unit in Grant County, AR - never a reading for one specific parcel. 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 Grant County, AR

Grant 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.

How Grant County, AR compares

Among the 3,058 rated counties on this site, Grant County, AR ranks 81 most-constrained nationally, and 2 of 75 within Arkansas.

Further reading

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