Nassau County's SSURGO septic rating
Very limited
Nassau County, FL's SSURGO dominant class comes back "Very limited", covering 95.3% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 95.3% of Nassau County's land. For scale: 648.681 square miles and 104,376 people call Nassau County home.
Before you rely on this for one lot
This is a countywide, area-weighted figure across every soil survey map unit in Nassau County, FL - never a reading for one specific parcel. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).
Budgeting for a system in Nassau County, FL
Nassau County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. 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.
Nassau County's rank among Florida counties
Among the 3,058 rated counties on this site, Nassau County, FL ranks 623 most-constrained nationally, and 8 of 65 within Florida.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems