Septic soil in Haskell County, OK, by the numbers

Very limited

84.5% of Haskell County, OK's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 84.5% of Haskell County's land. Haskell County covers 576.725 square miles and counts 11,811 residents.

This is a county figure, not a parcel figure

Nothing about Haskell County, OK's SSURGO figure applies to a specific address - it's a county-wide average. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Haskell County.

System cost, conventional vs. engineered

Given Haskell County's rating, plan for the engineered-system range rather than the conventional one. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.

Haskell County's rank among Oklahoma counties

Nationally, Haskell County, OK is the 1,736-most-constrained of 3,058 rated counties for septic soil. Within Oklahoma alone it ranks 37 of 77.

Related guides

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