Symptoms
- Slow but steady drip from the spout
- One handle needs to be turned tighter than the other to stop drips
- Drip is worse after the faucet has been used a lot recently
- Faucet is an older two-handle style
Likely causes
- CommonWorn or flattened rubber washerThe washer compresses against the valve seat thousands of times and eventually wears down.
- PossibleWrong-size washer installed previouslyA poor match can wear unevenly or fail to seal.
- PossibleDamaged valve seatA pitted seat will keep leaking even with a new washer.
- Less commonLoose screw holding the washerLets the washer shift out of position.
What to do
- Turn off the shutoff valves under the sink and open the faucet to release pressure.
- Remove the decorative cap and handle screw, then lift off the handle.
- Unscrew the packing nut with a wrench and lift out the stem.
- Remove the small screw at the bottom of the stem holding the washer and pop off the old washer.
- Take the old washer to a hardware store to match size and shape exactly, or use a multi-size washer kit.
- Install the new washer and screw, then reinsert the stem and tighten the packing nut.
- Reattach the handle, turn the water back on slowly, and check for drips.
- Repeat for the other handle if it shows similar wear.
Tools and parts
- Adjustable wrench
- Screwdriver
Faucet washer assortmentSearch: “faucet washer assortment kit”
When to call a pro
Call a plumber if the valve seat is damaged or the drip continues after a properly matched washer is installed.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.