What Gogebic County, MI's soil rates for a septic system

Very limited

In Gogebic County, MI, 93.1% of the surveyed land carries a "Very limited" rating for a standard septic drain field. 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. Gogebic County covers 1,102.136 square miles and counts 14,217 residents.

This is a county figure, not a parcel figure

USDA's survey covers the whole of Gogebic County, MI at once, not any single address. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Gogebic County.

System cost, conventional vs. engineered

Given Gogebic 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.

Where this sits nationally

Nationally, Gogebic County, MI is the 914-most-constrained of 3,058 rated counties for septic soil. Within Michigan alone it ranks 48 of 83.

Further reading

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