<human>:  How do I fix a leaking tap?
<bot>: To fix a leaking tap, start by turning off the water supply, usually located below the sink or behind the toilet. Then, use an adjustable spanner or basin wrench to remove the tap head, which is the visible part of the tap that controls the flow of water. Take out the worn washer, replace it with a new one, and reassemble the tap. Finally, turn the water supply back on, and test the tap to make sure it is not leaking.