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Why is my kitchen faucet leaking from the spout base?

Fix a kitchen faucet leaking at the spout base by replacing worn O-rings or tightening loose components with simple tools.

Category:Plumbing
Difficulty:Moderate
Time:45 min
Success:50%
Updated:Jun 28, 2026

quick_referenceQuick Answer

For Why is my kitchen faucet leaking from the spout base?, start with "Turn off water supply and drain lines": Shut off the hot and cold water valves under the sink. Open the faucet handle to release pressure and drain remaining water. Stop DIY if you see cracks in the faucet body itself. This is listed as a moderate recovery and usually takes about 45 min.

verifiedGuide Snapshot

Repair areaPlumbing
Estimated time45 min
DifficultyModerate
Stop conditions3

Last updated Jun 28, 2026. Review the stop conditions before continuing.

account_treeRecovery State

DeviceKitchen Faucet
Current stateLeak Path
Specific stateSpout Base Leak
Failed stepWorn O Ring
Likely failure typeWorn Part
DIY boundaryDIY recovery first
paymentsCost decision

help1. Understand the Problem

A leak at the spout base usually indicates worn O-rings or a loose retaining nut inside the faucet body. Over time, mineral buildup and rubber degradation cause water to seep out when the faucet is on. This fix restores a tight seal without replacing the entire faucet.

build_circle2. Try This First

Best First Step
Turn off water supply and drain lines

Turn off water supply and drain lines

Shut off the hot and cold water valves under the sink. Open the faucet handle to release pressure and drain remaining water.

visibility3. Visual Guidance

See what's happening and how to try the first recovery step.

1
Remove the faucet handle
Remove the faucet handlePry off the decorative cap with a flathead screwdriver, then unscrew the handle set screw and lift the handle off.
2
Unscrew the retaining nut
Unscrew the retaining nutUse adjustable pliers or a basin wrench to loosen the large retaining nut securing the spout to the faucet body.
3
Remove the old O-rings
Remove the old O-ringsPull the spout straight up and slide the old O-rings off the cartridge body. Discard them.
4
Install new O-rings and reassemble
Install new O-rings and reassembleLubricate new O-rings with silicone grease, slide them onto the cartridge, then reinstall the spout and retaining nut.

autorenew4. If That Doesn't Work

Try the next recovery options.

Replace the entire faucet cartridgeIf O-ring replacement fails, a worn cartridge may be the root cause. Replace the cartridge using manufacturer instructions.
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Frequently Asked Questions

Do I need special tools for this repair?expand_more
You'll need an adjustable wrench or basin wrench, a flathead screwdriver, and silicone faucet grease. Most homeowners already have these.
How long do new O-rings last?expand_more
With normal use, good quality silicone O-rings can last 3-5 years before needing replacement again.
What if the leak continues after replacing O-rings?expand_more
The faucet cartridge may be cracked or worn. Try replacing the entire cartridge, which is a common repair part.
Can I use plumber's tape instead of O-rings?expand_more
No, plumber's tape is for threaded pipe joints. O-rings create a compression seal and are the correct fix for this leak.

warning5. Stop DIY If

Don't continue if any of these apply.

reportYou see cracks in the faucet body itself
reportWater is leaking from the handle area instead of the spout base
reportThe faucet is more than 15 years old and parts are unavailable
Still stuck?Get personalized help with AI Recovery.

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Similar Failure Pattern

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This page provides general DIY guidance.
If you're unsure, it's always best to consult a professional.