how to fix a leaky faucet

Fix a leaky faucet by identifying your faucet type, shutting off the water supply, and replacing the worn internal component like a washer or cartridge.

Identify Faucet Type. Identify the faucet type: Compression (two handles), Cartridge (smooth single/double handle), Ball (swivel single handle), or Ceramic Disk (sturdy single handle). The repair method depends on this type.
Safety and Preparation. Always shut off the water supply valves under the sink and open the faucet to bleed off pressure before starting. Plug the drain to avoid losing small screws or parts.
Replace Worn Parts. Disassemble the handle to access the internal parts. Replace the specific worn item—such as a rubber washer, O-ring, cartridge, or spring/seat assembly—with an exact match for your model.
Reassembly and Testing. Apply plumber's grease to new O-rings and seals to ensure smooth operation. Reassemble carefully, avoiding overtightening, and test by turning the water on slowly.