Septic suitability in Roger Mills County, OK
Very limited
USDA puts Roger Mills County, OK at "Very limited" for septic absorption fields, the dominant reading across 87.8% of the county's soil. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 87.8% of Roger Mills County's land. The county spans 1,141.135 square miles, home to 3,304 people.
What this number does and doesn't tell you
Nothing about Roger Mills County, OK's SSURGO figure applies to a specific address - it's a county-wide average. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Roger Mills County: conventional vs. engineered cost
87.8% of Roger Mills 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.
Where this sits nationally
Among the 3,058 rated counties on this site, Roger Mills County, OK ranks 1,487 most-constrained nationally, and 26 of 77 within Oklahoma.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems