Jay - the second set of lines is for non-potable water like Tuffy mentioned. I've only seen them used for irrigation, but then again, I don't do residential work.
I'm not sure if it's a very good idea to have non potable water in the house. That'd be a good question for a plumber. Any in the house?:scratchhe
Pee in the shower, you may as well. I'm always looking for more things to do while in the shower. I cut my hair, shave, brush my teeth and bathe all while in there. Kind of a one-stop-shop if you will.:rofl: