Sagadahoc County, ME: the USDA septic-suitability picture
Very limited
USDA puts Sagadahoc County, ME at "Very limited" for septic absorption fields, the dominant reading across 76.5% of the county's soil. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 76.5% of the county. For scale: 253.979 square miles and 37,582 people call Sagadahoc County home.
Before you rely on this for one lot
Two lots a mile apart in Sagadahoc County can carry different soil, even though they share one countywide rating. 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 Sagadahoc County, ME
Sagadahoc 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.
Where this sits nationally
Among the 3,058 rated counties on this site, Sagadahoc County, ME ranks 2,205 most-constrained nationally, and 14 of 16 within Maine.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems