I think you mean "potable" water, not "portable" water. "Potable" means that you can drink it, "portable" would mean that you can carry it around with you. Al

I think you mean "potable" water, not "portable" water. "Potable" means that you can drink it, "portable" would mean that you can carry it around with you. All water is portable, but not all water is potable. This is a really easy mistake to make, especially if English isn't your first language, because the words are very very similarly spelled and pronounced. (And sorry, I'm not trying to nitpick. I'm sure everybody knows what you mean, just pointing this out in case you want to know)