Whoa! That is a monster spider plant! I think that thing would give me nightmares. Spiders are just about the only plant that does not tremble in fear when I enter the room. I happen to think that spiders belong in hanging baskets where the baby spiders can drape down and attack you when you walk by too closely. I have never had trouble with tap water on mine, though. They live under the carport, so I water them all summer from the hose, and they are big and perky and needing to be repotted once again. Those little fertilizer stakes make them very happy. You can always leave the water out for 24 hours as someone suggested, or collect rainwater (even melted snow would work), but I don't know if it is really neccessary. It looks like the main problem that monster is having is that it's root bound.