plumber has been completing the rough plumbing this week. He installed two bathtubs, which involved using a fairly dry mix of cement to level and support the tubs. The photo at left shows one of the tubs filled with water. The tubs are connected to the graywater system, which will eventually provide the flush water for the toilets.
The white box in front of the tub is where the washing machine will connect to the water supply and the sanitary drain (the septic system). The light blue plastic conduit carries electrical lines, including the power for the laundry equipment. The red and (dark) blue supply lines are cross-linked polyethylene (PEX) tubing supplying hot and cold water.