Septic suitability in Perry County, IN
Very limited
USDA puts Perry County, IN at "Very limited" for septic absorption fields, the dominant reading across 90.1% of the county's soil. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 90.1% of Perry County's land. For scale: 381.74 square miles and 19,320 people call Perry County home.
Before you rely on this for one lot
Perry County's rating is an average across the whole county, not a promise about any one lot inside it. 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 Perry County, IN
Perry 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.
Perry County's rank among Indiana counties
Among the 3,058 rated counties on this site, Perry County, IN ranks 1,260 most-constrained nationally, and 60 of 90 within Indiana.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems