Septic soil in Parke County, IN, by the numbers
Very limited
In Parke County, IN, 87.5% of the surveyed land carries a "Very limited" rating for a standard septic drain field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 87.5% of Parke County's land. Parke County, IN is 444.725 square miles with a population of 16,508.
What Parke County's reading doesn't cover
This is a countywide, area-weighted figure across every soil survey map unit in Parke County, IN - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Parke County will actually do.
What a system would cost here
With 87.5% of Parke County rating "Very limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.
Where this sits nationally
Nationally, Parke County, IN is the 1,508-most-constrained of 3,058 rated counties for septic soil. Within Indiana alone it ranks 65 of 90.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems