My daughter asked me why is there an overflow in the bath tub and the
bathroom sink, but none in the kitchen sink. I couldn't answer her, and
could not Google an answer.
So, I pose the question to the group.
For bathtubs its obvious as people turn water on and walk away. As for
bathroom sinks and not kitchen I don't know but its done this way as far as
I could remember. Now the new style bathroom sink, a glass bow above the
counter top has no overflows either as far as I can tell.
The usual answers are that the material (food particles and such) from
a typical kitchen sink would clog the overflow much more quickly and
then would also result in a bacteria breeding ground. Thus no
overflow drain in a kitchen sink. I did once see this huge commercial
stainless steel monster that had a pan where the drain rack sat and it
had a second drain.
"I've been here, I've been there..."
I just installed a new bathroom double sink and they did not have an
overflow. My guess is that the bathtub takes so long to fill that most
people will not be in the room all the time it is filling and stands a much
beter chance of over flowing. Also when you get in the tub the water rises
alot., well it does for me :-)
The judges rates Larry's answer:
Larry Caldwell wrote
Have you ever cleaned a bathroom sink? I don't want the crap
that came out of the overflow anywhere near my food. I would
suggest sanitary considerations are at the top of the list.
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