Sac County's SSURGO septic rating

Very limited

Sac County, IA's SSURGO dominant class comes back "Very limited", covering 91% of the county. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 91% of the county. The county spans 575.022 square miles, home to 9,533 people.

What this number does and doesn't tell you

Nothing about Sac County, IA'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.

Sac County: conventional vs. engineered cost

91% of Sac 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.

How Sac County, IA compares

Among the 3,058 rated counties on this site, Sac County, IA ranks 1,170 most-constrained nationally, and 71 of 99 within Iowa.

Further reading

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