How do I add plumbing if the sewer line is higher than the fixtures?

A. A sewer ejector pump is the answer. Kits come with the sump basin, sewer ejector pump, check-valve. The waster line is run into the sump basin, pumped through a checkvalve into the sewer line that grades with gravity. A vent pipe needs to be run also, (you can't pump out without replacing the air, it's like trying to suck air out of a bottle) If you add a high water alarm, which is a good idea. It is run off of a separate electrical breaker (insurance) to let you know if the pump isn't working before it's flood time. The check valve makes sure, that what you pump out, stays out. Otherwise the pump will keep cycling.  more