Clinton County, IN's soil, for a septic absorption field
Very limited
In Clinton County, IN, 97.9% of the surveyed land carries a "Very limited" rating for a standard septic drain field. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 97.9% of the county. Clinton County covers 405.067 square miles and counts 32,895 residents.
This is a county figure, not a parcel figure
This is a countywide, area-weighted figure across every soil survey map unit in Clinton County, IN - never a reading for one specific parcel. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Clinton County.
System cost, conventional vs. engineered
Given Clinton County's rating, plan for the engineered-system range rather than the conventional one. 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.
Clinton County's rank among Indiana counties
Nationally, Clinton County, IN is the 265-most-constrained of 3,058 rated counties for septic soil. Within Indiana alone it ranks 18 of 90.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems