Forsyth County, GA: the USDA septic-suitability picture

Somewhat limited

USDA puts Forsyth County, GA at "Somewhat limited" for septic absorption fields, the dominant reading across 47.4% of the county's soil. Modification usually rescues a conventional system at this rating - added fill or a larger field - rather than forcing a full engineered redesign. The county spans 224.617 square miles, home to 280,096 people.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Forsyth County, GA - never a reading for one specific parcel. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Forsyth County: conventional vs. engineered cost

47.4% of Forsyth County carrying a "Somewhat 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.

Forsyth County's rank among Georgia counties

Among the 3,058 rated counties on this site, Forsyth County, GA ranks 2,946 most-constrained nationally, and 115 of 159 within Georgia.

Before you act on this

How this rating is built, and its real limits · How a percolation test actually works