Yavapai County, AZ's soil, for a septic absorption field
Very limited
In Yavapai County, AZ, 84.1% 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 - 84.1% of Yavapai County lands in the strictest "very limited" bucket USDA uses. Yavapai County, AZ is 8,122.932 square miles with a population of 252,013.
What Yavapai County's reading doesn't cover
This is a countywide, area-weighted figure across every soil survey map unit in Yavapai County, AZ - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Yavapai County will actually do.
What a system would cost here
With 84.1% of Yavapai County rating "Very limited", a standard gravity system is not a safe assumption here. 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.
Yavapai County's rank among Arizona counties
Nationally, Yavapai County, AZ is the 1,765-most-constrained of 3,058 rated counties for septic soil. Within Arizona alone it ranks 1 of 15.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems