Jerome County, ID Septic Rating

Jerome County's SSURGO septic rating

Very limited

USDA puts Jerome County, ID at "Very limited" for septic absorption fields, the dominant reading across 90.1% 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 598 square miles, home to 26,056 people.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Jerome County, ID - 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.

Jerome County: conventional vs. engineered cost

90.1% of Jerome 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 Jerome County, ID compares

Among the 3,058 rated counties on this site, Jerome County, ID ranks 1,259 most-constrained nationally, and 16 of 44 within Idaho.

Further reading

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