Although this may seem
logical, the high amount of
oxygen in
water may actually feed the
fire. More often than not you can
douse a fire with water and successfully put it out, but, for example, an
oil fire requires something like
baking soda to put out. Throw as much water as you want on it and it will only get bigger.
Your best bet is to
fight fire with a licensed fire extinguisher. Always follow safety instructions!