USDA soil suitability at an address. Perfect for: 'soil type for a property', 'is the soil good for a septic system / foundation / drainage', 'USDA SSURGO soil at an address', 'soil context for a parcel'. Returns dominant soil component suitability ratings (septic, foundation, drainage) at the point via USDA Soil Data Access, with caveats. National. Not an engineering or perc-test determination. Charge-free when soil is out of coverage or the source is unavailable.