I'm not aware of any such authority. And maybe worse, I doubt that there could be, at the national level. It's not just that designations like "USDA Organic" are gamed. Stuff is just too complicated, and there's inadequate data.
Over the past century, the chemical industry has commercialized numerous novel compounds, maybe 10^5 to 10^6 or more. Although there's been some toxicity testing, of course, we are basically living in the only large-scale, long-term test.
Anyway, to be safest, your best bet is growing your own food, or buying from trusted local producers. And yes, I realize how impractical that is for most people. But no matter where your food comes from, it's arguably safest to eat as low on the food chain as possible.
Over the past century, the chemical industry has commercialized numerous novel compounds, maybe 10^5 to 10^6 or more. Although there's been some toxicity testing, of course, we are basically living in the only large-scale, long-term test.
Anyway, to be safest, your best bet is growing your own food, or buying from trusted local producers. And yes, I realize how impractical that is for most people. But no matter where your food comes from, it's arguably safest to eat as low on the food chain as possible.