Septic soil in Scott County, MN, by the numbers

Very limited

In Scott County, MN, 90% of the surveyed land carries a "Very limited" rating for a standard septic drain field. That reading means a conventional system is a poor bet here - 90% of Scott County lands in the strictest "very limited" bucket USDA uses. Scott County, MN is 356.081 square miles with a population of 157,206.

What Scott County's reading doesn't cover

USDA's survey covers the whole of Scott County, MN at once, not any single address. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Scott County will actually do.

What a system would cost here

With 90% of Scott 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.

Where this sits nationally

Nationally, Scott County, MN is the 1,265-most-constrained of 3,058 rated counties for septic soil. Within Minnesota alone it ranks 45 of 86.

Before you act on this

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