The seal on the tap must be tight when it is in the ‘off’ position as this is what prevents the water from continuing to flow. If it is not tight, this can cause a slow drip.
The easiest way to solve this problem is with a new washer. A washer is a little round piece made of rubber. If this starts to degrade or crack, it will let water pass.
If you’re not comfortable with doing the job yourself call the leaking tap experts here at our team on 0422686129