How To Fix A Dripping Bathroom Sink

A dripping bathroom sink is a common problem that can be easily fixed with a few simple tools and materials. In most cases, the drip is caused by a worn-out washer or O-ring, which can be replaced in a matter of minutes. Here are the steps on how to fix a dripping bathroom sink:

Turn off the water supply to the sink. There should be two shut-off valves under the sink, one for the hot water and one for the cold water. Turn both valves clockwise to turn off the water.
Open the faucet to release any remaining water in the lines. Once the water has stopped flowing, close the faucet.
Place a bucket or bowl under the sink to catch any water that may leak out. Using a wrench, loosen the packing nut on the base of the faucet. The packing nut is the large nut that is located just below the handle.
Remove the old washer or O-ring from the faucet. The washer is a small rubber or plastic disc that sits on the seat of the faucet. The O-ring is a small rubber ring that fits around the stem of the faucet.
Inspect the seat of the faucet for any damage. The seat is the surface of the faucet that the washer or O-ring seals against. If the seat is damaged, it will need to be replaced.
Apply a thin layer of plumber's grease to the new washer or O-ring. The plumber's grease will help to create a seal between the washer or O-ring and the seat of the faucet.
Place the new washer or O-ring onto the seat of the faucet. Make sure that the washer or O-ring is seated properly.
Tighten the packing nut on the base of the faucet. Do not overtighten the packing nut, as this could damage the faucet.
Turn on the water supply to the sink and check for leaks. If there are no leaks, the repair is complete.

If the drip persists after replacing the washer or O-ring, there may be a more serious problem with the faucet. In this case, it is best to call a plumber for assistance.

Here are some additional tips for fixing a dripping bathroom sink:

If the drip is coming from the handle of the faucet, it may be necessary to replace the handle washer.
If the drip is coming from the base of the faucet, it may be necessary to replace the packing nut.
If the drip is coming from the spout of the faucet, it may be necessary to replace the aerator.
If you are not comfortable making repairs to your bathroom sink, it is best to call a plumber for assistance.