How to Fix a Leaky Faucet: A Step-by-Step Guide

That constant drip-drip-drip from your faucet isn't just annoying—it's wasting water and money. A single leaky faucet can waste up to 3,000 gallons of water per year. The good news? Many faucet leaks are easy to fix yourself with basic tools.

What Causes a Leaky Faucet?

Before you start the repair, it helps to understand why faucets leak. The most common causes include:

Worn O-rings: These small rubber rings can deteriorate over time
Corroded valve seat: Sediment buildup can cause corrosion
Worn washers: The friction of use wears them down
Loose parts: Packing nuts and adjusting rings can loosen

Tools You'll Need

Adjustable wrench
Screwdrivers (Phillips and flathead)
Replacement washers and O-rings
Plumber's grease
Towels or rags

Step-by-Step Instructions

Step 1: Turn Off the Water Supply

Look under the sink for the shutoff valves and turn them clockwise to close. Turn on the faucet to release any remaining water and pressure.

Step 2: Remove the Handle

Pop off the decorative cap on the handle (if present), then remove the screw underneath. Gently pull the handle off. If it's stuck, use a handle puller or apply penetrating oil.

Step 3: Remove the Packing Nut

Use your wrench to unscrew the packing nut. Be careful not to scratch the fixture. The stem will come out with the nut.

Step 4: Inspect and Replace Parts

Examine the O-ring and seat washer. If they're damaged or worn, replace them. Take the old parts to a hardware store to find exact matches.

Step 5: Reassemble and Test

Apply plumber's grease to the new O-ring, then reassemble everything in reverse order. Turn the water back on and test for leaks.

When to Call a Professional

If the leak persists after replacing the washer and O-ring, or if you notice corrosion, it's time to call a professional. You should also call a plumber if you're dealing with a faucet that's more than 15 years old or if you're uncomfortable working with plumbing.

Save Water, Save Money

Fixing a leaky faucet is one of the easiest ways to reduce water waste in your home. Even a slow drip adds up over time. If you're dealing with multiple leaky faucets or more complex plumbing issues, our team at ABC Plumbing is here to help.