We got a septic field underground on our property that's on top of a hill. We are NOT planning to put anything ON the septic field directly. But there's a nice area downhill from it, and I'm wondering how far away from the septic we need to be for ogranic gardening or fruittrees? I'm mainly worried about the chemicals. We try to use toxin-free stuff for cleaning and washing, but occasionally we do use chemicals, and I don't want them in my food.
Would 50 ft be safe? 100?
Our soil is deep solid caliche with a thin layer of rocky top soil with barely any grass. The caliche can absorb some moisture, but it's slower draining.