When we were children, plugging a lavatory sink — more commonly known as a washbasin — involved placing a rubber stopper into a drain. The stopper was tethered to the lavatory faucet by a small metal ...

If a bathroom sink slowly loses its water or drains while it is being used, the cause is often a maladjusted pop-up drain. This mechanism, a part of virtually all modern lavatory faucets, can also be ...