You are so right.
I remember after the Northridge earthquake the same thing happened in our town.
No power so most stores closed.  Water was contaminated due to broken sewer/water lines.  Lucky we had bottled water at home.   
One good thing, we found that the Pizza Man store was open without power, (still had gas), we got a large with everything on it.   <img src="/images/graemlins/tongue.gif" alt="" />
Power came back on after a couple of days.  Couldn't drink the tap water for weeks until they flushed the system out, but you could use the toilet and take a shower.  (If you didn't mind the smell    <img src="/images/graemlins/confused.gif" alt="" />)