To run a sump pump water discharge outside your house, you will need to:
• Install a check valve in the outlet pipe. This will prevent backflow and keep spilled water from flowing back into the basin.
• Connect an adapter or coupler between the pump and outlet pipe. This will allow for easy connection and disconnection of pipes at any time.
• Attach flexible PVC tubing to the adapter or coupler on one end and then connect it to another length of rigid PVC piping that runs down through the wall to exit outside your home.
• Securely attach another fitting on the exterior side of this pipe with screws or rivets so that it is sealed against moisture intrusion into your home's walls or foundation.
Finally, ensure there are no low spots along the route where standing water could accumulate by using proper grading techniques when laying out your drainage system around your house’s exterior walls.