Water closets set on upper floors seemed to go through wax gaskets much more frequently than did those set in basements or industrial settings. ... Wax gaskets come with or without a plastic insert ...

The sink uses fresh water, but that water is then stored in the tank as grey water. And then when the toilet is flushed, ... so you'll need a spare outlet.

Whether or not a water closet is actually cleaner, most people would agree it’s nice to have a barrier for any smells, sounds, and sights you might be exposed to otherwise.