Payette County, ID: the USDA septic-suitability picture

Very limited

Payette County, ID's SSURGO dominant class comes back "Very limited", covering 95.5% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 95.5% of Payette County's land. For scale: 406.88 square miles and 27,662 people call Payette County home.

Before you rely on this for one lot

USDA's survey covers the whole of Payette 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 Payette County, ID

Payette 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.

Payette County's rank among Idaho counties

Among the 3,058 rated counties on this site, Payette County, ID ranks 598 most-constrained nationally, and 6 of 44 within Idaho.

Before you act on this

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