If you go back to you pool equipment pad and find water under the pump (and it is not raining) then you have a problem that needs to be repaired. If a pump leak . Swimming pool pumps come in many sizes and shapes. Some are big . If it is on the suction side, or where the water comes into the pump, it is an air leak. If you see water leaking out of the bottom of the pool pump assembly, it's a good indication that you may have to replace the shaft seal within the motor pump .