Check the manufacturer's MSDS (Material Data safety Sheet) using Google, for what the 'liquid chlorine' actually contained. It could be anything from sodium hypo-chlorite solution 5.75% which is the same as washing machine bleach, to some other exotic stuff like chlorine dioxide solution used in disinfecting food processing machinery. As a rule most of the stuff will wash out and be good, but you can also get some reactions between the plastic and high chlorine compounds that will form chlorinated hydrocarbons , chloroform for example, that will be toxic to your body when ingested. As a rule try to minimize any chlorinated hydrocarbons. You might safely use water containing them to wash your hands. I would prefer water that wasn't exposed to chlorinated hydrocarbons for drinking. On the other hand most city water systems use chlorine to disinfect their water, and there is a detectable amount left over, which keeps the bacteria level low.
To sum it up, I'd use a plastic container that had contained chlorine dioxide solution, or sodium hypo-chlorite solution, as an emergency water container. Don't use it if it smells funny. Rinse, fill, wait, dump, refill. Dump the water a few times.
Has anyone had any experience using ultraviolet light to disinfect water? I saw a UV light set up that was supposed to kill bacteria after a short use. I have also read about set ups that are installed in aquariums that will kill bacteria.
