In article ,
" wrote:

My point was that an overflow can hardly be a code requirement.

I haven't been able to find anything definitive on that, either. A
couple of websites wherein someone claimed that it used to be code but
isn't any longer, or that it's still code but no one enforces it
anymore, partly due to the proliferation of non-compliant vessel sinks.

I did hear many years back something about it being required, but
apparently I'm either wrong, or, as my friend who is never wrong once
declared "I wasn't wrong, I was just informed with old information."

I hope we can all at least agree that it couldn't possibly be "against
code" to have an overflow as Tony opined.

As far as HeyBub's non-compliant kitchen sink, I assume that it's either
a double with a spillover bar, or that whatever guidelines used to be in
place automatically assumed such a sink in the kitchen.

One thing I hadn't noticed about our little group prior to this issue is
that although we have several NEC junkies, we apparently don't have any
UPC junkies.