BPA’s leaching into rain barrel water?

I’m not sure who could help me with this question but I am considering installing a rain barrel to collect water for my vegetable garden. I am finding no information, however, on whether the large plastic drums have BPA’s in them or not. If they do, is it harmful to water vegetables with this water? Or does the BPA break down in the soil somehow? I can’t seem to find a BPA free plastic drum, just some “food-grade” ones but apparently you can’t trust food grade stuff either. Any info you have would be greatly appreciated.
Thanks,
Danny