Don't feel embarassed at all. I know a lot of people who wouldn't have gotten the joke, and they do know english well, so that can't be their excuse. I like the dhmo.com website, it's done in a very realistic manner, almost like an official governemnt warning site. <img src="/images/graemlins/grin.gif" alt="" />

Anyway, you brought up a good issue. I never really thought that the bottles could be contaiminating the water. I don't think it'll stop me from drinking, but it's always nice to know. But I wonder if rotating the drinking water isn't worse than just letting it sit there. By rotating it, you are basically getting a consistent long term exposure in small doses, rather than just using it during an emergency where you would just have a higher short term exposure. I really doubt it makes any difference, but it's just something I'm curious about, which is why I wonder if the absorbtion stabilizes after a certain amount of time. Either way, I really wouldn't worry about it all, I still feel safe drinking bottle water.

I do think it's important to note that it doesn't really matter what the source, you will never have perfectly pure water. Everything we drink or eat has trace amounts of some type of contamination in it. If you think about it, a lot of people add poison to their water. And they're doing it voluntarily <img src="/images/graemlins/shocked.gif" alt="" /> Chlorine is a known poison, and it CAN kill you. But it all depends on the concentrations in the water.

No matter what, having even "expired" or contaminated water is better than having none at all.