Septic suitability in Tulsa County, OK
Very limited
Tulsa County, OK's SSURGO dominant class comes back "Very limited", covering 83.7% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 83.7% of Tulsa County's land. The county spans 570.242 square miles, home to 693,514 people.
What this number does and doesn't tell you
Tulsa County's rating is an average across the whole county, not a promise about any one lot inside it. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Tulsa County: conventional vs. engineered cost
83.7% of Tulsa 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 Tulsa County, OK compares
Among the 3,058 rated counties on this site, Tulsa County, OK ranks 1,806 most-constrained nationally, and 40 of 77 within Oklahoma.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems