Septic soil in Ogemaw County, MI, by the numbers

Very limited

Soil across 95.2% of Ogemaw County, MI rates "Very limited" in USDA's septic-absorption-field interpretation. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. Ogemaw County, MI is 563.506 square miles with a population of 20,985.

What Ogemaw County's reading doesn't cover

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

What a system would cost here

With 95.2% of Ogemaw 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.

Ogemaw County's rank among Michigan counties

Nationally, Ogemaw County, MI is the 651-most-constrained of 3,058 rated counties for septic soil. Within Michigan alone it ranks 32 of 83.

Before you act on this

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