Minidoka County's SSURGO septic rating

Very limited

Minidoka County, ID's SSURGO dominant class comes back "Very limited", covering 86.9% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 86.9% of Minidoka County's land. For scale: 757.227 square miles and 22,691 people call Minidoka County home.

Before you rely on this for one lot

USDA's survey covers the whole of Minidoka County, ID at once, not any single address. 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 Minidoka County, ID

Minidoka 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.

Where this sits nationally

Among the 3,058 rated counties on this site, Minidoka County, ID ranks 1,552 most-constrained nationally, and 25 of 44 within Idaho.

Further reading

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