Okmulgee County's SSURGO septic rating
Very limited
Okmulgee County, OK: USDA's soil survey calls 97.7% of the county "Very limited" for a septic leach field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 97.7% of Okmulgee County's land. The county spans 697.443 square miles, home to 37,084 people.
What this number does and doesn't tell you
Two lots a mile apart in Okmulgee County can carry different soil, even though they share one countywide rating. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Okmulgee County: conventional vs. engineered cost
97.7% of Okmulgee 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.
How Okmulgee County, OK compares
Among the 3,058 rated counties on this site, Okmulgee County, OK ranks 286 most-constrained nationally, and 2 of 77 within Oklahoma.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems