How to Fix a Leaky Faucet
Diagnose and fix common faucet problems including drips, low pressure, loose handles, and valves that won't turn off
What You'll Need
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Tools
Adjustable wrench
Screwdriver set
Flathead and Phillips
Needle-nose pliers
Allen wrench set(optional)
For handles with set screws
Towels
Flashlight
Materials
Step-by-Step Instructions
Identify the problem type
2-3 minutes
Before starting, determine what's wrong: Is the faucet dripping from the spout? Is water pressure low? Is the handle loose or wobbly? Does the faucet not turn off completely? Each issue has a different fix.
Pro Tip
A dripping spout usually means worn washers or O-rings. Low pressure often indicates a clogged aerator. A loose handle may just need tightening. A faucet that won't turn off needs valve work.
Turn off water supply
2-5 minutes
Locate the shut-off valves under the sink. Turn them clockwise to shut off water. Turn on the faucet to release pressure and drain remaining water. Place a towel in the sink to catch any small parts.
Pro Tip
If you can't find shut-off valves under the sink, you may need to shut off water at the main.
Warning
Always turn off water before disassembling any faucet parts.
Clean the aerator (for low pressure)
5-10 minutes (plus 30 min soak time)
Unscrew the aerator from the end of the faucet spout (turn counterclockwise). Disassemble it and soak parts in white vinegar for 30 minutes. Use an old toothbrush to scrub away mineral deposits. Rinse and reassemble.
Pro Tip
If the aerator is stuck, wrap it in a cloth and use pliers. For kitchen faucets with pull-down sprayers, check the sprayer head too.
Access the valve (for dripping faucets)
5-10 minutes
Remove the handle by first finding and removing the decorative cap (pry off gently), then unscrew the handle screw. Pull the handle off. You'll see the valve stem or cartridge underneath.
Pro Tip
Take photos as you go so you remember how everything goes back together.
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Track This Project FreeInspect and replace worn parts
10-15 minutes
For compression faucets: remove the packing nut and pull out the stem. Replace the rubber washer at the bottom. For cartridge faucets: pull out the cartridge and replace it or its O-rings. Apply plumber's grease to new O-rings before installing.
Pro Tip
Bring old parts to the hardware store to find exact replacements. Take photos of the faucet brand/model.
Warning
Don't force stuck parts - apply penetrating oil and wait if needed.
Fix a loose handle
5-10 minutes
If the handle is loose or wobbly, tighten the handle screw. If the screw is tight but handle still loose, the stem may be worn. Remove the handle and check if the stem adapter is stripped - it may need replacement.
Pro Tip
Some handles use Allen screws hidden under a decorative cap. Check the side or back of the handle.
Reassemble and test
5-10 minutes
Reinstall all parts in reverse order. Hand-tighten, then snug with tools (don't over-tighten). Turn water supply back on slowly. Test the faucet - check for leaks at the handle, spout, and under the sink.
Pro Tip
If it still drips, you may have the wrong size washer or need a new cartridge.
Common Mistakes to Avoid
- Not turning off water before starting
- Losing small parts down the drain (always plug the sink)
- Using the wrong size replacement parts
- Over-tightening handles, which can damage stems
- Forgetting to apply plumber's grease to O-rings
Safety Warnings
- Always turn off water supply before disassembly
- Plug the drain to prevent losing small parts
When to Call a Professional
If the faucet body is corroded or cracked, if you can't identify the faucet type to find parts, if there are leaks behind the wall, or if the shut-off valves are stuck or broken.
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Frequently Asked Questions
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Can I fix a leaky faucet myself or do I need a plumber?
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Replace a Showerhead
Swap out your old showerhead for a new one
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Project Overview
- Difficulty
- Beginner
- Time
- 15-45 minutes
- Est. Cost
- $5–$30
- Tools
- 6 items
- Materials
- 4 items
- Steps
- 7
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