A dripping tap wastes water and money and points to a worn part that gets worse. Here's what causes it and when to call a licensed Port Stephens plumber. A dripping tap sounds harmless. It isn't. That slow drip wastes thousands of litres a year and quietly drives up your water bill. It's also a sign a part inside the tap has worn out and won't fix itself. Here's what's going on, what you can safely check, and when to get a licensed plumber in. What a Dripping Tap Is Actually