Union County, IN's soil, for a septic absorption field

Very limited

Soil across 80.2% of Union County, IN rates "Very limited" in USDA's septic-absorption-field interpretation. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 80.2% of Union County's land. Union County, IN is 161.191 square miles with a population of 6,884.

What Union County's reading doesn't cover

This is a countywide, area-weighted figure across every soil survey map unit in Union 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 Union County will actually do.

What a system would cost here

With 80.2% of Union 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.

Union County's rank among Indiana counties

Nationally, Union County, IN is the 2,033-most-constrained of 3,058 rated counties for septic soil. Within Indiana alone it ranks 81 of 90.

Before you act on this

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