Septic suitability in Sullivan County, PA

Very limited

USDA puts Sullivan County, PA at "Very limited" for septic absorption fields, the dominant reading across 97.9% of the county's soil. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 97.9% of Sullivan County's land. For scale: 449.939 square miles and 5,927 people call Sullivan County home.

Before you rely on this for one lot

Sullivan County's rating is an average across the whole county, not a promise about any one lot inside it. 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 Sullivan County, PA

Sullivan 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.

Sullivan County's rank among Pennsylvania counties

Among the 3,058 rated counties on this site, Sullivan County, PA ranks 272 most-constrained nationally, and 10 of 66 within Pennsylvania.

Related guides

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