Living on bottled water

We awoke this morning to find that our apartment has no H2O. After a short investigation, Brad discovered that a car had hit a water hydrant down the road this morning and nobody (around here anyway) has water. No idea when it will come back.

For now we're washing our hands and brushing our teeth with bottled water that I found underneath our bed. But does it go bad? These bottles have "Best by 5/06" printed on them.