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

Very limited

In Bronx County, NY, 64% of the surveyed land carries a "Very limited" rating for a standard septic drain field. That reading means a conventional system is a poor bet here - 64% of Bronx County lands in the strictest "very limited" bucket USDA uses. Bronx County covers 42.201 square miles and counts 1,384,724 residents.

This is a county figure, not a parcel figure

Bronx County's rating is an average across the whole county, not a promise about any one lot inside it. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Bronx County.

System cost, conventional vs. engineered

Given Bronx County's rating, plan for the engineered-system range rather than the conventional one. 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.

Bronx County's rank among New York counties

Nationally, Bronx County, NY is the 2,634-most-constrained of 3,058 rated counties for septic soil. Within New York alone it ranks 60 of 61.

Further reading

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