What Bryan County, OK's soil rates for a septic system
Very limited
In Bryan County, OK, 73.9% of the surveyed land carries a "Very limited" rating for a standard septic drain field. That reading means a conventional system is a poor bet here - 73.9% of Bryan County lands in the strictest "very limited" bucket USDA uses. Bryan County covers 904.348 square miles and counts 50,305 residents.
This is a county figure, not a parcel figure
Bryan County's rating is an average across the whole county, not a promise about any one lot inside it. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Bryan County.
System cost, conventional vs. engineered
Given Bryan 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.
Bryan County's rank among Oklahoma counties
Nationally, Bryan County, OK is the 2,332-most-constrained of 3,058 rated counties for septic soil. Within Oklahoma alone it ranks 60 of 77.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems