There are apple trees growing on our property, just past (downhill from) the septic tank. They are near the leach field, I imagine, but I don't know how close.
The trees produce tiny, non-edible apples. We would like to graft scions of delicious apple varieties onto the trees, but the proximity to the septic gives us pause. Is it safe to grow apples here for human consumption?
As far as the septic, if it matters, we take good care of it. We have it pumped regularly and we don't pour chemicals down the drain.
Relatedly, would a soil test (of some kind) help us to determine safety? We have a good university extension near us. What would we test for?