"Organic" means there is a specific list of SUBSTANCES that are allowed.
That's exactly what's wrong with USDA Organic and other similar labels. The founders of the Organic gardening movement absolutely did not mean that. Organic farming was envisioned as a cyclical system where human feces returned to fields and soil health and community health supported one another. We kind of, sort of do that with sewage sludge, but it's terrible. Even if you didn't mix in all the various stuff people pour down their drains (which is pretty much everything you can imagine, if it will go down a drain, someone is pouring it there) you'd still have to deal with modern pharmaceuticals, many of which survive intact through both the human body and the sewage processing system.
You cannot successfully reduce a concept like organic farming to a list of approved products and still have it be true to that concept.