Septic suitability in Beaver County, OK
Very limited
Beaver County, OK's SSURGO dominant class comes back "Very limited", covering 43.7% of the county. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. For scale: 1,814.837 square miles and 5,025 people call Beaver County home.
Before you rely on this for one lot
Two lots a mile apart in Beaver County can carry different soil, even though they share one countywide rating. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).
Budgeting for a system in Beaver County, OK
Beaver County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. 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.
Beaver County's rank among Oklahoma counties
Among the 3,058 rated counties on this site, Beaver County, OK ranks 2,909 most-constrained nationally, and 75 of 77 within Oklahoma.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems