A dripping tap is often caused by a worn-out washer or seal inside the tap body. Over time, these parts can deteriorate due to constant use, wear or mineral deposits in the water. To fix this, you can try replacing the washer or the seal yourself if you’re comfortable with basic DIY plumbing. Alternatively, contacting a professional plumber is advised to ensure the issue is resolved correctly. Dripping taps not only waste water, but can also lead to higher water bills if left untreated.