Most dripping faucets are fixed by replacing a worn washer, O-ring, or cartridge. Shut off the water, take the handle apart, swap the failed part, and reassemble.
Steps to stop the drip
- Turn off the supply valves under the sink.
- Remove the handle and unscrew the cartridge or stem.
- Inspect the washer, O-ring, and cartridge for wear.
- Replace the damaged part with an exact match.
- Reassemble and turn the water back on slowly.