Umm, why do you want bottled water in the first place? Is it what you were told to use, saw it at a pet store, or is there something wrong with your water?
Unless you have something wrong with your water (very high nitrates or something), I would not bother with bottled water or distilled water. Just get a water conditioner/dechlorinator (if you need it; well users don't usually) such as Prime and treat your tap water.