The plumbers installed the plumbing for the basement bathroom. Left to right are the sink drain, toilet drain, and sewage ejector. The ejector is a 32 gallon tank (like a trash can) with a submersed grinder/pump that pumps the tank's contents up to the main house drain, which runs 9' above it. The bottom of the ejector tank is about 2 feet deep. I'll build this bathroom someday...