How to Install A Sewage Pump System


Read your manual for installation, operation, and safety information. This guide neither supplements nor replaces the Owner’s Manual.

How to Install A Sewage Pump System
If you want a floor drain or toilet or sink fixtures in the basement, you need to lift the waste water out. 
You do this by installing a sewage ejector system. Check with local authorities to make sure home owners are permitted to perform this work.

Cost (0-5 scale): 4
Difficulty (0-5 scale): 4

Items Needed:
• Piping material
• Submersible sewage pump
• Sewage tank or basin large enough to hold pump
• Full-flow check valve
• Float switch
• Necessary tools

Step One – Determine pump size
Determine the proper size pump by counting how many drains will be feeding your sewage basin:
• 1-3 Drains – ½ HP Sewage Pump
• 4 or more Drains – ¾ HP Sewage Pump
The farther the distance the waste must be lifted, the more powerful the pump needs to be. Consult the “performance table” on each pump package to select the proper model for your installation.

Step Two – Locate and bury tank
Locate the tank that will receive waste water near the sewer line that runs to the approved sewage system. Dig a pit large enough to hold the tank and as deep as needed to place the tank inlet at the lowest elevation for all drain lines that will run into it. Level the tank and fill it with water to ensure it doesn't move. Connect the drain pipes to the tank, then backfill and compact dirt around the tank. Complete all cement flatwork before proceeding, taking care to prevent any dirt, cement or debris from entering the tank.

Step Three – Install and connect pump
Place pump in basin and connect the discharge line to the pump. For sanitary purposes, sewage tanks must be sealed with an air-tight cover, so make sure the pump discharge is aligned with the cover’s discharge port. Install a check valve (back flow preventer) in a horizontal section of the discharge line. Insure you run the piping properly and hang pipe according to local plumbing codes.
Two pipe openings are placed in the sewage tank lid. When the sewage pump removes liquid from the tank, it creates a vacuum that could suck out the trap water from the fixtures plumbed to the basin, which would allow sewer gas to permeate the home. To stop this from happening, a vent pipe must be plumbed into the sewage tank to bring air into the tank to counter the vacuum. This pipe is usually connected to the main plumbing vent of the house.

Step Four – Adjust float switch and test system
Install and adjust the liquid level sensors, depending on the model of pump you purchased. Pour water into the sewage tank several times while testing the activation and turn off switch positions. When satisfied with pump performance, make sure you seal the sewage tank cover and vent the tank properly.