If the water is coming out from under the fridge and you have a water
dispenser or automatic ice maker, then I would suggest that you pull the fridge out
from the wall and check the water tubing going to the back of the
fridge. The tubing is connected with a compression fitting (a special
nut that compresses the tubing to the fridge. There may also be a few
more pieces of tubing on/in the back of the fridge with these fittings.
Place you fingers on each fitting to see if it is loose or wet. If you
find a wet or loose fitting, take some pliers and tighten it (snug it
up, but not too tight because you can damage the fitting. Dry up the
water. Watch the fridge for a while to make sure the leak is stopped.
If you can't get it stopped, or if it gets worse, you can cut off the
water (there should be a valve under a cabinet next to the fridge, or
under your sink). You can get a replacement fitting at Lowe's
and they can tell you how to install it if necessary. If you have water
pooling under your fridge and it goes up to the wall, then you should
check on the other side of the wall for water also. This happened to
our fridge, but we did not see the water in front of the fridge because
it ran to the back of the fridge and under the wall into our carpet on
the other side. Wet carpet is how we discovered the problem.