Today I found 275 gallon plastic storage containers for sale on craigslist for a very reasonable price. The fellow selling them said they have been cleaned out (they held a vegetable based coolant, I was told). The first time I asked him, he said they were not food grade, only to back peddle later and say he "thought they might be" food grade.
I don't know that I would want these for drinkable water storage (or that it would even be a smart idea, given what they had in them), but I guess I am wondering if I would need to wash them out before storing water for bathing, the garden, etc?? Do I need to treat the water for the purposes of cleaning, gardening, bathing?