Sam Takoy wrote:
Hi,

I have a copper sink in the bathroom and because it doesn't have an
overflow, the water drains very slowly. It is not too much of a problem,
because as the sink begins to fill, it drains more quickly due to
gravity, but as it drains down, the rate slows down dramatically.

But my kitchen sink (as most kitchen sinks) also doesn't have an
overflow, but doesn't have the same problem. How come? Is it because
kitchen sinks have a larger drain?

Thanks!

Sam
Hi,
Today no sink has overflow(I think it is against code) You better make
sure your plumbing vent stack is in good working order(no obstruction).