Septic suitability in Brown County, IN
Very limited
Brown County, IN: USDA's soil survey calls 98.1% of the county "Very limited" for a septic leach field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 98.1% of Brown County's land. The county spans 312 square miles, home to 15,650 people.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Brown County, IN - never a reading for one specific parcel. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Brown County: conventional vs. engineered cost
98.1% of Brown County carrying a "Very limited" reading changes the realistic budget here. 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.
Brown County's rank among Indiana counties
Among the 3,058 rated counties on this site, Brown County, IN ranks 237 most-constrained nationally, and 13 of 90 within Indiana.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems