If you’re thinking about putting a bathroom in your finished basement, you may need a sewage ejection system. In many older homes (without plumbing under the foundation), the plumbing pipes run at the ground level. They run under the main floor and between joists and connecting with other pipes that ensure waste removal and water circulation.
If you were to attempt to connect a basement toilet with a sewer main, you may find that there is not enough drop from the basement toilet level to the municipal sewage system. Essentially there would not be enough boost from gravity to allow for evacuation of sewage at that level of your home.
Installing an ejector system is not difficult. It likely also means that you don’t have to cut into the foundation to lay sewage pipes – saving you time and money.