Septic suitability in Fremont County, IA

Very limited

Fremont County, IA's SSURGO dominant class comes back "Very limited", covering 77.4% of the county. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. The county spans 511.168 square miles, home to 6,494 people.

What this number does and doesn't tell you

Fremont County's rating is an average across the whole county, not a promise about any one lot inside it. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Fremont County: conventional vs. engineered cost

77.4% of Fremont 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 Fremont County, IA compares

Among the 3,058 rated counties on this site, Fremont County, IA ranks 2,165 most-constrained nationally, and 88 of 99 within Iowa.

Before you act on this

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