Hi, this video shows you a very easy fix for water collecting at the bottom of your fridge or on the floor by your refrigerator. You will probably have a blocked condensation drain. Clean it out with a QTip (Cotton swab/bud) and if it is still blocked insert a long thin flexible bit of plastic or thin curtain wire. Make sure the fridge has been unplugged/disconnected from the electricity supply before inserting anything into the condensation drain hole.
Many thanks Vince