A leaky faucet is more than just annoying. A faucet that drips once per second wastes over 3,000 gallons of water per year — and adds real money to your water bill.
The good news? Most leaky faucets are caused by a worn washer or O-ring. You can fix it yourself in under an hour with basic tools.
What Causes a Leaky Faucet?
The most common cause is a worn rubber washer inside the faucet handle. Every time you use the faucet, the washer presses against a valve seat. Over time it wears down and water starts dripping through.
What You’ll Need
An adjustable wrench, a flathead screwdriver, replacement washers and O-rings (a kit costs around $8 on Amazon), and plumber’s grease.
Step 1: Turn Off the Water Supply
Look under the sink for the shut-off valves. Turn them clockwise until the water stops. Turn on the faucet to release any remaining pressure.
Step 2: Remove the Handle
Look for a screw under the decorative cap on top of the handle. Remove the cap, unscrew the handle, and lift it off.
Step 3: Replace the Washer
Inside you’ll find a brass screw holding a rubber washer. Remove the old washer and replace it with a new one the same size. While you’re there, replace the O-ring too — it’s the rubber ring around the stem.
Step 4: Reassemble and Test
Put everything back together in reverse order. Turn the water supply back on slowly and test the faucet. The dripping should be gone.
Still Leaking?
If the faucet still leaks after replacing the washer, the valve seat may be corroded. A faucet repair kit covers most issues and costs under $15.