Septic suitability in Franklin County, FL

Very limited

Franklin County, FL: USDA's soil survey calls 94% of the county "Very limited" for a septic leach field. 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 545.002 square miles, home to 12,979 people.

What this number does and doesn't tell you

Franklin 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.

Franklin County: conventional vs. engineered cost

94% of Franklin 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.

Franklin County's rank among Florida counties

Among the 3,058 rated counties on this site, Franklin County, FL ranks 791 most-constrained nationally, and 12 of 65 within Florida.

Before you act on this

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