McIntosh County, OK: the USDA septic-suitability picture

Very limited

McIntosh County, OK: USDA's soil survey calls 81.6% of the county "Very limited" for a septic leach field. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. For scale: 618.292 square miles and 19,710 people call McIntosh County home.

Before you rely on this for one lot

USDA's survey covers the whole of McIntosh County, OK at once, not any single address. 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 McIntosh County, OK

McIntosh 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 McIntosh County, OK compares

Among the 3,058 rated counties on this site, McIntosh County, OK ranks 1,961 most-constrained nationally, and 48 of 77 within Oklahoma.

Further reading

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