It Is Time...

It's been over two weeks now, and all the drinking cups in the house have been used and are stowed neatly in the dishwasher.  The kids have been good at rationing water from their day pack bladders.  They may have a days' worth of water left.  Your wifes' personal pink LNT nalgene bottle is totally empty.  She is complaining that she needs a refill, now!  This morning I noticed there is a red light on the Brita filter on the kitchen faucet.  What should we do?  It's time to go hiking.