Mohave County, AZ Septic Rating

Mohave County, AZ: the USDA septic-suitability picture

Very limited

USDA puts Mohave County, AZ at "Very limited" for septic absorption fields, the dominant reading across 66.1% of the county's soil. That reading means a conventional system is a poor bet here - it's already USDA's strictest "very limited" bucket, not a partial constraint. The county spans 13,332 square miles, home to 226,479 people.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Mohave County, AZ - never a reading for one specific parcel. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Mohave County: conventional vs. engineered cost

66.1% of Mohave 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.

Mohave County's rank among Arizona counties

Among the 3,058 rated counties on this site, Mohave County, AZ ranks 2,582 most-constrained nationally, and 11 of 15 within Arizona.

Related guides

How this rating is built, and its real limits · Conventional vs. engineered septic systems