Septic suitability in Dakota County, MN

Very limited

Dakota County, MN's SSURGO dominant class comes back "Very limited", covering 78.2% of the county. 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. The county spans 562.558 square miles, home to 453,156 people.

What this number does and doesn't tell you

Two lots a mile apart in Dakota County can carry different soil, even though they share one countywide rating. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Dakota County: conventional vs. engineered cost

78.2% of Dakota 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.

Dakota County's rank among Minnesota counties

Among the 3,058 rated counties on this site, Dakota County, MN ranks 2,125 most-constrained nationally, and 76 of 86 within Minnesota.

Before you act on this

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