Alachua County's SSURGO septic rating
Very limited
Alachua County, FL's SSURGO dominant class comes back "Very limited", covering 75.4% of the county. Practically, that rules out a simple gravity system for most of the county - 75.4% of it sits in USDA's most-constrained bucket. The county spans 875.668 square miles, home to 291,782 people.
What this number does and doesn't tell you
Alachua 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.
Alachua County: conventional vs. engineered cost
75.4% of Alachua 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.
Alachua County's rank among Florida counties
Among the 3,058 rated counties on this site, Alachua County, FL ranks 2,256 most-constrained nationally, and 51 of 65 within Florida.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems