How to Fix a Leaking Faucet

Faucets are relentless workers, but eventually, the internal seals succumb to mineral buildup and friction, resulting in that maddening drip-drip-drip. Fixing a leak isn't just about silencing the noise; it's about preventing wasted water and protecting your hardware from premature corrosion. When done well, the handle operates smoothly and the water flow is crisp and immediate without a single stray drop. You do not need to be a professional plumber to handle this. Most faucets rely on a few standard components that are easily accessible once you remove the handle. Before starting, ensure you have the right replacement parts on hand, as taking a degraded washer to the store for a match is much more reliable than guessing the size beforehand.

1. Stop the Water Flow. Locate the shut-off valves under the sink and turn them clockwise until they stop. Open the faucet handles to drain any remaining water in the lines.
2. Expose the Cartridge. Pry off the decorative cap on the handle with a flathead screwdriver to reveal the screw. Unscrew the handle and lift it off to expose the cartridge or stem.
3. Pull Out the Stem. Use an adjustable wrench to loosen the packing nut, then pull the cartridge or stem assembly straight out of the faucet body. Note the orientation for reassembly.
4. Swap the Worn Seals. Inspect the rubber O-rings or washers for cracks, flattening, or brittleness. Replace these with identical new parts from your repair kit.
5. Scrub Away Buildup. Use a soft cloth and white vinegar to wipe away mineral buildup from the interior of the faucet body where the seal sits. A clean seat ensures a tight, drip-free fit.
6. Reassemble and Verify. Slide the cartridge back into place, tighten the nut, and reattach the handle. Slowly open the supply valves and run the water to check for leaks.