This is common and simple trouble. The defective inner parts like the washers and the valves purpose the taps to drip. Therefore, it needs to be restore or changed. Easy and cheaper however can store a variety of water and money. You can DIY this with parts gotten from hardware save. Helpful tip could be to turn on/off your taps lightly to extend its lifespan. If the problem persist, we will be able to assist you with a thorough inspection.