I know people will initially think this is a bad idea but here's the whole thing. These are 5 gallon containers for dishwasher detergent and rinse aid for dish washers. My thinking is I know it's a higher concentration but if properly rinsed out how could it be harmful if it's used to clean your dishes. Also they are grade 2 HDPE plastic containers. What is everyone's thoughts and opinions. I want to use these for potable water but if all else fails I'll use them for non potable.