Sac County, IA Septic Rating

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; that share is already USDA's strictest bucket, not a lesser constraint layered on top. The county spans 575 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