Campbell County, SD: the USDA septic-suitability picture

Somewhat limited

USDA puts Campbell County, SD at "Somewhat limited" for septic absorption fields, the dominant reading across 55.7% of the county's soil. A conventional system can still work here with design changes - a larger field, added fill, or a shallower layout - but it isn't guaranteed. For scale: 733.767 square miles and 1,342 people call Campbell County home.

Before you rely on this for one lot

Campbell County's rating is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).

Budgeting for a system in Campbell County, SD

Campbell County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. 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.

Campbell County's rank among South Dakota counties

Among the 3,058 rated counties on this site, Campbell County, SD ranks 2,971 most-constrained nationally, and 65 of 66 within South Dakota.

Before you act on this

How this rating is built, and its real limits · How a percolation test actually works