How to Fix a Leaking Kitchen Faucet by Replacing the Washer

Faucets are workhorses that eventually give up, usually signaled by that persistent, rhythmic drip that keeps you awake at night. That sound isn't just an annoyance; it is a clear indicator that a rubber washer has lost its seal, allowing water to bypass the valve. Replacing it is a rite of passage for every homeowner, and it's the single most effective way to extend the life of your plumbing fixtures without calling a professional. Done well, this repair takes less than an hour and costs pennies. The secret to success isn't brute strength; it is organization. By keeping track of your parts as you disassemble the faucet, you ensure that putting it back together is just as simple as taking it apart. When you finish, the drip should be gone, and you will have saved yourself the cost of a plumber's service call.

1. Shut Off Water First. Locate the shut-off valves under the kitchen sink and turn them clockwise until they stop. Open the faucet handle to drain any residual water from the lines.
2. Pop Off the Handle. Pry off the decorative cap on the handle to reveal the screw underneath. Use a screwdriver to remove the screw, then pull the handle off the faucet body.
3. Extract the Valve Stem. Use an adjustable wrench to loosen the packing nut that holds the valve stem in place. Once loose, unscrew it by hand and pull the entire stem assembly out.
4. Find and Remove Washer. Look at the bottom of the valve stem to locate the rubber washer held by a brass screw. Remove the screw, peel off the old washer, and clean any mineral buildup from the area.
5. Seat the New Washer. Place the new washer onto the stem, replace the brass screw, and tighten it securely. Apply a tiny amount of heat-proof plumber's grease to the new rubber to help it seal better.
6. Test the Seal. Thread the valve stem back into the faucet body, tighten the packing nut, and reattach the handle. Slowly turn the water supply back on and check for drips.