Rain barrel, food barrel, or ibc (Downtown Berkley)

Hi I am looking to harvest water and need a food safe large container or Rain barrel. I am also interested in a rain barrel conversion kit. Ic containers are ok, food safe food or liquid containers are ok. Rain barrel is ok. Thanks! Also, if you know of a business that uses these that would probably have to pay to dispose of their food or foodliquid barrels, please let me know who to reach out to. Thanks!