Not necessarily outhouse, but the composting toilets I've read about. They're indoors. And I don't want one.
http://oikos.com/library/compostingtoilet/
Please... you just ruined my breakfast.
Water is a renewable resource, and for the government to tell us how much water we can use for showering and for one flush is insanity and the worst intrusion into our privacy, yet people just don't seem to be upset enough over it.
I bet if someone would do a study, they would find that people are NOT using any less water since the introduction of the "water saving" showerheads and toilets, you juat have to shower longer, flush more times and call the plumber more often.