I have a very interesting problem..

Today, my alternator belt came off and when I tried to put it back on I noticed that the water pump was misaligned with the other two pulleys...

No wonder it came off (note it was thin, worn away, but did not break).  The water pump pulley was not loose.

Now in January I had a new water pump put on.  Could this pulley have been misaligned since then and only now came off?

Very strange.

--peace--
    stu