Septic suitability in Andrew County, MO
Very limited
Andrew County, MO's SSURGO dominant class comes back "Very limited", covering 86.2% of the county. That reading means a conventional system is a poor bet here - 86.2% of Andrew County lands in the strictest "very limited" bucket USDA uses. The county spans 432.634 square miles, home to 18,091 people.
What this number does and doesn't tell you
Nothing about Andrew County, MO's SSURGO figure applies to a specific address - it's a county-wide average. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Andrew County: conventional vs. engineered cost
86.2% of Andrew 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.
Andrew County's rank among Missouri counties
Among the 3,058 rated counties on this site, Andrew County, MO ranks 1,600 most-constrained nationally, and 87 of 114 within Missouri.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems