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

Let’s be honest. That drip, drip, drip from your kitchen faucet is one of the most annoying sounds in a home. It keeps you up at night, wastes gallons of water over time, and if you are anything like the typical homeowner, you might be tempted to just ignore it. But here is the good news: a leaky kitchen faucet is almost always a simple repair that you can handle yourself in about an hour. You do not need to be a master plumber or own a garage full of specialized tools. With a little patience and a basic understanding of how your faucet works, you can stop the drip and save yourself the cost of a service call.

Before you start, it helps to understand that most kitchen faucets are not magic. They work because of a simple combination of rubber washers, O-rings, and cartridges. Over time, these parts wear down. Minerals in your water can harden the rubber, or the constant friction from turning the handle on and off can cause the seals to deform. That worn-out piece of rubber is what allows water to sneak past the handle when the faucet is supposed to be off. The fix is almost always the same: identify the type of faucet you have, take it apart, and replace the worn part.

The very first thing you need to do is figure out what kind of faucet is sitting on your sink. Most modern kitchen faucets fall into one of three categories: a compression faucet, a cartridge faucet, or a ball-type faucet. Chances are, if your house was built in the last twenty or thirty years, you have a cartridge faucet. These are the easiest to fix. A compression faucet is an older style that uses two separate handles for hot and cold, and they rely on a rubber washer that gets squished down to stop the flow. Ball-type faucets are common in single-handle designs and use a rotating ball and springs to mix the water. You can usually tell which one you have just by looking at it and feeling how the handle moves.

Now, let us talk about the actual repair. Regardless of your faucet type, the safety step never changes. You must turn off the water supply under the sink before you touch anything. Look for the two shutoff valves attached to the water lines coming out of the wall. Turn them clockwise until they stop. Then, open the faucet handle to release any pressure and let the remaining water drain out. This simple step prevents you from getting sprayed in the face or creating a mini flood in your cabinet.

For the most common scenario, a single-handle cartridge faucet, the repair is surprisingly straightforward. You will need a few basic tools: an adjustable wrench, a flathead screwdriver, and a pair of pliers. Start by prying off the little decorative cap on the base of the handle. Underneath, you will usually find a small Allen screw or a Phillips head screw. Remove the screw, and the handle should lift right off. Now you will see the cartridge, which is usually held in place by a retaining nut or a metal clip. Remove that nut or clip. This is where it gets a little tricky. The cartridge can be stubborn. Use your pliers to grip the top of the cartridge and pull straight up with steady pressure. If it refuses to budge, a little gentle wiggling back and forth can help break the seal.

Once the old cartridge is out, compare it to the new one you bought at the hardware store. They should look identical. Make sure you slide the new one in exactly the same orientation as the old one came out. Push it down firmly until it seats fully, replace the retaining clip or nut, and put the handle back on. Do not overtighten anything. Hand-tight is usually enough, with a small turn from a wrench to make it snug.

There is one common mistake that a lot of homeowners make during this process. When you finally turn the water back on, you might initially have sputtering or low pressure. Do not panic. Air got trapped in the lines while you had the faucet open. Simply run the water for about thirty seconds to a minute, and it will smooth out. If the leak is gone but the handle feels loose, check your retaining screw. If the leak is still there, you likely did not seat the cartridge all the way down, or you bought the wrong replacement part.

What if your faucet is still dripping after you replace the cartridge or the washer? This is usually a sign that the valve seat inside the faucet body has become rough and pitted. This metal surface can be cleaned with a small valve seat tool or a piece of fine sandpaper. But honestly, if you have gotten this far and the problem persists, it might be time to consider that the faucet itself has simply reached the end of its life. Modern faucets are built to last about ten to fifteen years. Beyond that, the internal components can corrode to the point where no new rubber part will fix the issue permanently.

Consider this your permission to be handy. A leaky faucet is not a villain, it is just a machine with a worn-out part. You have the ability to fix it, save some water, and feel that small but powerful jolt of DIY satisfaction. Turn off the water, take your time, and remember that even a professional plumber started by fixing their first leaky faucet.

© 2026 RepairHome. All Rights Reserved.