How to Fix a Leaky Faucet: Step-by-Step Guide
A dripping faucet wastes up to 3,000 gallons of water per year and costs $20–$35 annually. The good news? Fixing it is usually a simple DIY job that costs under $15 in parts.
Tools & Materials You\’ll Need
- Adjustable wrench
- Screwdrivers (flathead and Phillips)
- Replacement washers, O-rings, or cartridge
- Plumber\’s grease
- Towel and bucket
Step 1: Turn Off the Water Supply
Locate the shut-off valves under the sink and turn them clockwise until fully closed. Turn on the faucet to release any remaining pressure and drain residual water.
Step 2: Remove the Faucet Handle
Look for a decorative cap on top of the handle — pop it off to reveal a screw. Remove the screw and pull the handle straight off. If it\’s stuck, gently wiggle it while pulling.
Step 3: Identify Your Faucet Type
- Ball faucet – Has a rotating ball mechanism; common in kitchens
- Cartridge faucet – Has a cartridge inside the stem; easiest to fix
- Ceramic disc – Most durable; rarely leaks
- Compression faucet – Oldest type; uses a rubber washer
Step 4: Replace the Worn Part
For most faucets, the leak comes from a worn washer or O-ring. Take the old parts to a hardware store to find exact replacements. Apply plumber\’s grease before reinstalling.
Step 5: Reassemble and Test
Reassemble in reverse order. Turn the water supply back on slowly. Test for leaks. If the drip continues, the seat valve may be damaged and need professional attention.
When to Call a Plumber
Call a plumber if: the faucet body is cracked, there\’s pipe corrosion, or the leak is from the base of the faucet (indicating internal O-ring failure that requires disassembling the whole unit).