Do you have several switches for your water pump? If so, are they momentary switches where you push them, and they rock back? If yes to both questions, you may have a bad water controller switch. It looks like this and is usually located withing a foot or so of the water pump. The black wire from the pump should run to the controller. The way to test it......take a piece of wire and attach it to a ground in the water bay (metal screw or bolt) and then attach the other end to the black wire of the water pump. If the pump turns on, your controller is bad. They're about $45 on Amazon.
If none of the above applies...
, then you need to find the fuse or add auxiliary 12 volt power directly to the pump and make sure the pump is still good.