What Allegany County, NY's soil rates for a septic system

Very limited

99.2% of Allegany County, NY's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. That reading means a conventional system is a poor bet here - 99.2% of Allegany County lands in the strictest "very limited" bucket USDA uses. Allegany County, NY is 1,029.507 square miles with a population of 47,299.

What Allegany County's reading doesn't cover

Nothing about Allegany County, NY's SSURGO figure applies to a specific address - it's a county-wide average. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Allegany County will actually do.

What a system would cost here

With 99.2% of Allegany County rating "Very limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.

How Allegany County, NY compares

Nationally, Allegany County, NY is the 63-most-constrained of 3,058 rated counties for septic soil. Within New York alone it ranks 1 of 61.

Before you act on this

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