A leaky faucet is one of the most common plumbing problems in American homes — and one of the easiest to fix yourself. A single dripping faucet can waste 3,000+ gallons of water per year, which adds up fast on your water bill.
What You’ll Need
- Adjustable wrench
- Phillips and flathead screwdrivers
- Replacement washers or cartridge (match your faucet brand)
- Plumber’s grease
- Towels and a bucket
Step 1: Shut Off the Water Supply
Look under the sink for the shut-off valves and turn them clockwise until closed. Turn on the faucet to release any remaining pressure and drain the lines.
Step 2: Remove the Faucet Handle
Pop off the decorative cap on top of the handle (usually with a flathead screwdriver), then unscrew the handle screw beneath it. Wiggle the handle off.
Step 3: Identify the Problem
- Ball faucet: replace the ball, springs, seats, and O-rings
- Cartridge faucet: replace the cartridge (most common fix)
- Ceramic disc faucet: clean or replace the ceramic disc cylinder
- Compression faucet: replace the rubber washer at the bottom of the stem
Step 4: Replace the Worn Part
Take the old part to your hardware store to find an exact match, or note the faucet brand and model. Apply plumber’s grease to the new washer or O-ring before installing.
Step 5: Reassemble and Test
Put everything back in reverse order, tighten firmly (don’t overtighten), then slowly turn the water back on. Check for drips under the handle and at the base of the spout.
When to Call a Plumber
If the leak continues after replacing the washer, or if you notice:
- Corrosion on the valve seat
- Cracks in the faucet body
- Water damage under the sink
…it’s time to call a licensed plumber. Find one near you using our plumber directory.
Difficulty: Easy | Time: 30–60 minutes | Cost: $5–$20 in parts