You have to assume the water is done when the water towers are empty.
Most cities will likely have generators to provide water (I live in a small town and I've asked this question--we do have generators).
But then I asked the more important question: How much fuel do you have to run them?
Answer? About 12 hours of continuous operation.
Even if there are generators, the limiting factor is fuel. But either way, you need water independent of the local water system, or you need a bugout location.
Most cities will likely have generators to provide water (I live in a small town and I've asked this question--we do have generators).
But then I asked the more important question: How much fuel do you have to run them?
Answer? About 12 hours of continuous operation.
Even if there are generators, the limiting factor is fuel. But either way, you need water independent of the local water system, or you need a bugout location.