Summit County's SSURGO septic rating

Very limited

Summit County, CO's SSURGO dominant class comes back "Very limited", covering 80.1% 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 608.328 square miles, home to 30,882 people.

What this number does and doesn't tell you

Nothing about Summit County, CO'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.

Summit County: conventional vs. engineered cost

80.1% of Summit 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.

Where this sits nationally

Among the 3,058 rated counties on this site, Summit County, CO ranks 2,037 most-constrained nationally, and 39 of 63 within Colorado.

Before you act on this

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