Organic vs Conventional
The weak link in this chain is the way in which "below dangerous levels" is defined. Whenever government gets involved in defining such terms there is a breakdown in communications. The board that decides what is "organic" and what is not consists of seven appointed "individuals" . I use quotes because 5 of them are actually corporations that engage in mega-farming. The two that are supposed to represent consumers are not exactly independent either.
At least 2 dozen artificial chemicals are allowed to be added to "organic foods" up to 2%, by weight, and still be labeled organic! More are on the way.
Pesticides, herbicides and some petrochemical fertilizers can be harmful at below the legal levels as well. No wonder "There were no long-term studies of health outcomes of people consuming organic versus conventionally produced food."
Another way organic is misleading is that the water used to irrigate the crops is not regulated and could (and does) contain contaminates such as lead and mercury that are actually accumulated and increased in such crops as "organic baby greens" to levels higher than was in the water. Sometimes as much as 10 or 15 times higher!
Government, get out of our food. And stop letting big corporations define the terms and safety of the crops they sell.
The only way to be sure is to have a victory garden in your own back yard (or apartment patio). We are what we eat, but it is getting harder to know what that is.
