Is a hole in sump pump drain pipe necessary?
Posted by David Costello on May 05, 19101 at 22:08:41:
I found a hole in my sump pump pvc pipe, just above the pump, but still inside the sump pump pit. Is this to allow the water to flow out when the pump has stopped, or is it a defect I should fix?

The pvc travels up ten feet, and then about forty feet to the outside. The hole allows a fair amount of water to back up into the pit when the pump is running.