Septic suitability in Richland County, WI
Very limited
Richland County, WI's SSURGO dominant class comes back "Very limited", covering 92.8% of the county. Practically, that rules out a simple gravity system for most of the county - 92.8% of it sits in USDA's most-constrained bucket. For scale: 586.15 square miles and 17,123 people call Richland County home.
Before you rely on this for one lot
Nothing about Richland County, WI's SSURGO figure applies to a specific address - it's a county-wide average. 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 Richland County, WI
Richland 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.
Richland County's rank among Wisconsin counties
Among the 3,058 rated counties on this site, Richland County, WI ranks 954 most-constrained nationally, and 28 of 72 within Wisconsin.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems