Cache County, UT: the USDA septic-suitability picture

Very limited

Cache County, UT's SSURGO dominant class comes back "Very limited", covering 87.4% of the county. Practically, that rules out a simple gravity system for most of the county - 87.4% of it sits in USDA's most-constrained bucket. The county spans 1,164.687 square miles, home to 145,487 people.

What this number does and doesn't tell you

Cache 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.

Cache County: conventional vs. engineered cost

87.4% of Cache 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 Cache County, UT compares

Among the 3,058 rated counties on this site, Cache County, UT ranks 1,515 most-constrained nationally, and 3 of 28 within Utah.

Further reading

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