How to Fix a Leaking Faucet: A Step-by-Step Guide for Beginners

That dripping sound at 2 AM. You know the one. It echoes through the quiet house, each drop hitting the sink basin with maddening regularity. Drip. Drip. Drip. If you’re lying in bed wondering what that’s going to cost you—both in water bills and repair calls—I’ve got good news. In most cases, you can fix a leaking faucet yourself in an afternoon with nothing more than a few basic tools and a little patience.

I’ve been helping homeowners tackle their own repairs for years, and I can tell you that faucet leaks are some of the most fixable problems in your house. You don’t need to be a plumber. You don’t need expensive equipment. And honestly, the hardest part isn’t the repair itself—it’s just getting started and building confidence.

Why That Leak Matters More Than You Think

Before we talk about how, let’s talk about why. A single dripping faucet might not seem like much, but it adds up fast. We’re talking about 3,000 gallons of water wasted per year from a faucet that drips once per second. That’s not just an environmental issue—it’s money flowing down your drain. Depending on your water rates, that could be $35 to $70 annually in wasted water and sewer charges. Over the lifetime of your home, that’s thousands of dollars.

Beyond the cost, a leaking faucet is your house sending you a message. It’s telling you that something inside needs attention. Left alone, that problem doesn’t stay small. Internal components corrode, damage spreads, and what could have been a $20 fix becomes a $200 replacement. I’ve seen it happen too many times—someone ignores a leak for months, then suddenly they need a whole new faucet.

The good news? Faucets are designed to be repairable. Most common household faucets can be fixed with nothing more than a basic understanding of how they work and a willingness to take them apart and put them back together.

Identifying Your Faucet Type: The First Step

Not all faucets are created equal, and the way you fix one depends entirely on what you’re working with. There are four main types of faucets in most homes, and identifying which one you have will determine your entire repair strategy.

Ball Faucets have a single handle with a rounded, dome-shaped cap on top. The handle moves in all directions—up and down to control volume, side to side to adjust temperature. These are common in kitchens and named after the ball-shaped cartridge inside that controls water flow. Moen makes popular versions, as do Delta and Kohler.

Cartridge Faucets have a single handle or sometimes two handles on one body. The handle moves up and down to control volume and usually left and right for temperature. Inside, a cartridge does all the work. Peerless and Moen are major brands here. These are increasingly popular because they’re fairly reliable.

Ceramic Disc Faucets have a tall, rectangular cartridge inside with a ceramic disc mechanism. These are less common in older homes but becoming standard in new construction. They’re considered the most durable type because there are fewer moving parts inside.

Compression Faucets are the older style with two separate handles—one for hot water, one for cold. Inside each handle is a stem with a rubber washer that compresses to stop water flow. If your house was built before 1980, you’ve almost certainly got at least one of these.

To identify yours, look at the handle configuration and feel how it moves. Take a photo of your faucet so you can reference it later. Better yet, look under the sink and see if you can spot any identifying information or model numbers on the faucet body itself.

Gathering Your Tools (You Probably Have Most Already)

Here’s what’s great about a faucet repair: you don’t need to buy much. Many of these tools are already sitting in your kitchen junk drawer or garage.

For any faucet repair, you’ll want an adjustable wrench (a 6-inch or 8-inch will handle most faucets) and a flathead screwdriver. A Phillips head screwdriver is also helpful for some models. An Allen wrench set is worth having because many modern faucets use these small hexagonal keys to secure internal components.

You’ll also need washers and O-rings. These are small rubber or silicone pieces that create watertight seals. Most hardware stores sell universal assortment kits for $3 to $5. These kits usually have multiple sizes because different faucet models use different sizes.

For compression faucets specifically, a faucet stem removal tool (sometimes called a “faucet key”) is basically required. This is a specialty tool, but they’re cheap—usually under $10 at any hardware store or online. Without one, you’ll struggle to remove the valve stem without damaging it.

Grab some plumber’s grease (silicone-based, food-safe if you’re using it in a kitchen faucet) while you’re at the hardware store. This lubricates the internal parts and helps prevent leaks.

Finally, keep some clean towels and a bucket nearby. You’ll have water spillage, and you want to be prepared.

Total investment? Usually $15 to $30 if you need to buy tools. If you already have basic hand tools, you might spend nothing at all.

The Preparation Work: Don’t Skip This

Before you touch anything inside your faucet, turn off the water supply. Look under the sink and you should see two valves (or sometimes one) with handles. Turn these clockwise until they stop. If your house doesn’t have shutoff valves under the sink—and some older homes don’t—you’ll need to find your main water shutoff valve, usually in the basement or near where the water line enters your house. Some homes have one near the water heater too.

Once you’ve shut off the water, turn on the faucet to release any remaining pressure. Let it run for a few seconds, then you’re ready to work.

Place your bucket under the faucet—there’s always water trapped inside, and you don’t want it pouring all over your cabinet floor. Trust me on this. I’ve learned the hard way more times than I’d like to admit.

Fixing a Compression Faucet (The Two-Handle Type)

If you’ve got the classic two-handle faucet, you’re actually in luck because compression faucets are straightforward to repair, even though they’re older technology.

Start by removing the handle. Look for a small access hole—sometimes it’s covered by a decorative cap or button. Pop that off with your flathead screwdriver and you’ll find an Allen wrench hole or a screw. Remove whatever’s there and the handle should come off. If it’s stuck, wiggle it gently while pulling. Don’t force it and risk stripping the internal threading.

Next, you’ll see a packing nut—a hexagonal nut just below where the handle attached. Using your adjustable wrench, turn this counterclockwise a few turns. Don’t remove it completely, just loosen it.

Now comes the part that needs your faucet stem removal tool. This tool fits over the stem (the rod sticking up from inside the faucet body) and you turn it counterclockwise to remove the entire stem assembly. Once it’s out, you’ll see a small rubber washer at the bottom—this is your culprit. This washer gets compressed over time and stops sealing properly, causing the leak.

Replace that washer with a new one from your assortment kit. While you’ve got the stem out, replace the O-ring too—it’s the small rubber ring wrapped around the stem shaft. Apply a tiny bit of your plumber’s grease to the new O-ring before installing it. This helps it seal better and last longer.

Reassemble everything in reverse order: put the stem back in, tighten the packing nut, reattach the handle, and replace the handle cap. Turn the water back on slowly and test it out.

Fixing a Ball Faucet (Single Handle, Dome Top)

Ball faucets are common in kitchens and usually pretty reliable, but when they do leak, the fix is slightly different.

Start the same way: shut off the water and position your bucket.

Look at the faucet handle. There’s usually a small setscrew—often hidden under a decorative cap or button. Pop off this cap with your flathead screwdriver and you’ll find the setscrew. Remove it and the handle comes right off.

You’ll see a decorative dome cap covering the ball mechanism. Using an adjustable wrench, grip this cap and turn it counterclockwise to remove it. Underneath, you’ll find a rounded piece—the actual ball with grooves and channels. Above that is a cam collar and a rubber cam.

Here’s where it gets slightly tricky. You need to remove both the cam collar and the rubber cam below it. The cam is the most likely culprit in most ball faucet leaks. Once you remove it, replace it with a new one from a ball faucet repair kit (which you can get for $10 to $15). While you’re in there, the springs and seals often need replacing too, so buy a complete kit rather than just the cam.

Once you’ve replaced the worn parts, reassemble everything in reverse: put the new cam and collar back, replace the dome cap, reattach the handle, and you’re done.

Fixing a Cartridge Faucet (Single Handle, Up and Down)

Cartridge faucets are straightforward because so much of the work is contained in one replaceable cartridge.

After shutting off the water, look for the handle setscrew, usually hidden behind a decorative cap or button. Remove this and the handle slides right off.

You’ll now see a cartridge, which looks like a cylinder sticking up from the faucet body. There’s usually a nut holding it in place. Use your adjustable wrench to remove this nut.

Carefully pull the cartridge straight up. This is where most people run into trouble—it can be tight. A cartridge puller tool ($20 to $30) makes this dramatically easier, but if you don’t have one, you can often work it out by rocking it gently side to side while pulling up.

Once the cartridge is out, you have two options. You can replace just the seals and springs inside the cartridge (you’ll need a cartridge repair kit for your specific faucet model), or you can replace the entire cartridge. I typically recommend replacing the whole cartridge because the internal parts are easily damaged during disassembly and you risk the repair not working properly.

A replacement cartridge for Moen, Delta, Kohler, or Peerless faucets usually runs $30 to $50. It’s a bit more than a repair kit, but you get a like-new component with a warranty, and you avoid the frustration of trying to rebuild something with worn internal parts.

Install the new cartridge, tighten the retaining nut, reattach the handle, and you’re finished.

Fixing a Ceramic Disc Faucet (The Modern Single Handle)

These are the newest type and usually the most reliable, which means they need repairs less often. But when they do leak, the fix is surprisingly simple.

The ceramic disc cartridge is relatively large—about the size of a D-battery—and you’ll see it right away once you remove the handle. Look for a setscrew on the handle, remove it, and the handle comes off.

Now locate the cartridge cap (usually a large hex nut). Using your adjustable wrench, remove this cap.

The entire ceramic cartridge should lift right out. Replacing this cartridge is your best option—they cost $40 to $60 depending on the brand and model, but the internal ceramic discs are precision-machined and not meant to be rebuilt by homeowners.

Before you install the new cartridge, take a moment to clean the faucet body where the cartridge sits. Any debris or mineral buildup can prevent a proper seal. Use a clean cloth to wipe out the cavity.

Install the new cartridge, replace the cap, reattach the handle, and test it. These repairs are usually the smoothest because there’s very little that can go wrong.

Common Mistakes I See Beginners Make

After helping dozens of homeowners with these repairs, I’ve noticed patterns in what goes wrong.

Mistake #1: Not turning off the water. I can’t stress this enough. Someone always thinks “Oh, I’ll just be quick” and ends up soaked and frustrated. Turn it off. The water won’t hurt waiting five minutes.

Mistake #2: Forcing stuck components. If something won’t come out, stop and think. Sometimes a component is stuck because you’re turning it the wrong direction. Sometimes you need a different tool. Forcing it and stripping the threads turns a $20 fix into a $200 replacement. Patience saves money.

Mistake #3: Buying the cheapest universal kit. That $2 assortment of washers and O-rings might not include the exact size you need. Spend the extra few dollars and buy a complete variety pack. Better to have options than to be stuck halfway through.

Mistake #4: Not identifying the faucet type first. I’ve had people call me saying they bought a cartridge repair kit for what turned out to be a ball faucet. Know what you’re working with before you buy parts.

Mistake #5: Reassembling while things are still wet. Dry everything thoroughly before reassembling. Water droplets trapped inside cause corrosion and future leaks.

When to Call a Professional

There are situations where DIY makes sense and situations where calling a plumber is the smarter choice.

Call a professional if your shutoff valves don’t work—you can’t stop the water flow to your faucet. A plumber needs to address this anyway, and you don’t want to start taking apart a faucet when you can’t shut off the water.

Call a professional if you can’t identify your faucet type or find replacement parts for it. Some very old faucets or unusual models aren’t worth the hunting around.

Call a professional if the faucet is leaking from the base or if water is pooling under the sink after you’ve tightened everything. This usually means the faucet itself is failing or there’s an issue with the seal between the faucet and sink deck—repairs that might require removing the entire faucet.

Call a professional if you’ve tried the repair and the leak persists. There might be a bigger issue, like damage to the valve seat, that requires professional equipment to fix.

The cost comparison: A professional plumber visit typically costs $100 to $200 for diagnosis and repair. A new faucet installation runs $200 to $500 depending on the quality and type. DIY repairs using purchased parts run $15 to $75. Even if your first attempt doesn’t work perfectly, you’re usually ahead financially.

Your Path Forward

The dripping faucet that seemed like a disaster when you started thinking about it isn’t really a disaster at all. It’s just a small mechanical problem with a straightforward solution. The hardest part is building the confidence to start.

Here’s what I’d recommend: Take a picture of your faucet right now. Go to your local hardware store or search online for your faucet type and model. Spend thirty minutes watching a video on YouTube of someone fixing that exact faucet type. Then gather your tools, shut off the water, and give it a shot.

Will it be perfect the first time? Maybe, maybe not. But you’ll learn something, you’ll save money, and you’ll feel genuinely proud of yourself for fixing something with your own two hands. That feeling matters more than you might think.

And if something goes wrong? You’ve lost two hours and $20 in parts. You can always call a plumber then. But I suspect you’ll find that you’ve got this.