Septic suitability in Lake County, CO
Very limited
Lake County, CO's SSURGO dominant class comes back "Very limited", covering 86.1% of the county. Practically, that rules out a simple gravity system for most of the county - 86.1% of it sits in USDA's most-constrained bucket. The county spans 376.919 square miles, home to 7,369 people.
What this number does and doesn't tell you
USDA's survey covers the whole of Lake County, CO at once, not any single address. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Lake County: conventional vs. engineered cost
86.1% of Lake 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 Lake County, CO compares
Among the 3,058 rated counties on this site, Lake County, CO ranks 1,615 most-constrained nationally, and 32 of 63 within Colorado.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems