What should I do if I have a leaking bathroom sink?

If you have a leaking bathroom sink, you should first turn off the water supply to the sink. Then, inspect the sink's pipes and connections for any visible leaks or damage. If you are comfortable doing so, you can try tightening any loose connections or replacing damaged parts. If the leak persists or you are unsure how to fix it, it is best to contact a plumber for professional assistance.