Septic suitability in Tioga County, NY
Very limited
Tioga County, NY's SSURGO dominant class comes back "Very limited", covering 98.5% of the county. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 98.5% of the county. For scale: 518.767 square miles and 47,574 people call Tioga County home.
Before you rely on this for one lot
Tioga 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 Tioga County, NY
Tioga 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.
Tioga County's rank among New York counties
Among the 3,058 rated counties on this site, Tioga County, NY ranks 168 most-constrained nationally, and 3 of 61 within New York.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems