Hello,

I am going to put a full bathroom in my basement, do I need an injector pump?

You mean ejector and we can't tell yet. You need to tell us where and at what level your sewer drain leaves the house. Last thing you want to do is inject sewage into the basement.

Yes, I realized yesterday that I am looking for a ejector not an injector, no wonder I could not find any info on it. I am going to put the bathroom in place where the washer and dryer are right now, the basement is a half wall of concrete and the remainder is studs and insulation. The exit for the washing macine is almost as high as the rafters.

I am not sure what level the sewer drain is. I am closing on this house this Friday and am starting construction on Saturday, putting in 2 bedrooms, full bath and living room in the basement.

Thank you so much for responding!

Find where you can connect to an existing sewer line and measure that run, With a 3" pipe you need to have a 1/4 " per foot slope, 4" pipe needs half that pitch. You need to vent to the roof or find a existing vent to connect to, called reventing.