How to Fix a Leaky Faucet Efficiently

Dripping faucets are more than just an annoyance; they are a slow-motion drain on your utility bill and a constant, rhythmic irritation in the quiet of a home. Most people let them run for months, assuming the repair requires a master plumber's intuition. The reality is that the internal mechanisms of a faucet are surprisingly simple, consisting mostly of rubber seals and plastic cartridges that eventually succumb to mineral buildup and friction. Successfully stopping a leak is about isolation and precision. By shutting off the water at the source and keeping your disassembled parts organized, you can return a faucet to full functionality in under an hour. When done well, the handle operates with a smooth, firm resistance and the spout remains completely dry between uses.

1. Stop the Water Flow. Locate the shut-off valves under the sink and turn them clockwise until they stop. Open the faucet handles completely to drain remaining pressure and verify the water is off.
2. Expose the Core. Pry off the decorative cap on the handle to reveal the screw underneath. Use a screwdriver to remove the screw and pull the handle assembly straight up off the stem.
3. Document Before Dismantling. Use an adjustable wrench to loosen the packing nut holding the stem in place. Once the nut is free, pull the cartridge or stem assembly out of the faucet body.
4. Swap The Worn Seals. Examine the rubber O-rings and seat washers for cracks, flattening, or debris. Use a flathead screwdriver to pry off old seals and slide the exact-match replacements into the grooves.
5. Dissolve Mineral Buildup. Scrub the interior of the faucet body with a stiff nylon brush and white vinegar to remove mineral deposits. Rinse the area thoroughly with fresh water.
6. Restore and Verify. Slide the cartridge back into the body, tighten the packing nut, and reattach the handle. Slowly open the shut-off valves and test for leaks while watching the spout.