Yeah, I wonder if there is like a big tub insert you could put in...but that's kinda far-fetched. At least it's not a stainless steel sink that shows every water drop.

I live in Oakland too in an old house, and the old enamel sink has to be scrubbed after every use (if I want it perfect - to be realistic, it probably only gets scrubbed once a week), but it's the edges that bother me - they get all black and moldy. I guess I should re-caulk, but I'm beginning to think all the plumbing in this house is held together with caulk. I won't even tell you about the bathroom...

Bleach can hurt some old pipes, I think, but probably not too much if you flush it thru with hot water. But now we're under water rationing, so you probably won't want to do that either.
Argh!