A few months ago, I noticed that drip. You know the one — that steady, rhythmic tap from the kitchen sink that starts off barely noticeable and then slowly drives you insane over the course of a week. I tried ignoring it. I told myself it was just a minor annoyance, something I could live with. But by the second week, the sound of that drip was the first thing I heard when I walked into the kitchen in the morning, and it was the last thing I heard before going to bed at night. I knew I had two options: call a plumber and spend somewhere between $150 and $300 for a service call, or figure out how to fix it myself.
I should be honest here — I have zero plumbing experience. The extent of my home repair knowledge up to that point was changing a lightbulb and tightening a loose cabinet hinge. The idea of opening up a faucet and messing with internal parts made me genuinely nervous. I had visions of water spraying everywhere, stripped screws, and ending up with a bigger problem than what I started with. But the thought of paying someone a few hundred dollars for what I suspected might be a five-minute fix really bothered me.
So I did what any reasonable person would do in 2026: I spent an evening watching YouTube videos and reading through a handful of DIY plumbing forums. What I learned surprised me. Most leaky faucets — specifically the common compression faucet type found in many kitchens — fail because of one single component: a small rubber washer that deteriorates over time. The fix is straightforward, requires minimal tools, and genuinely takes less than 15 minutes once you know what you are doing.
Understanding Why Faucets Leak
Before I get into the actual steps, let me explain what is actually happening inside your faucet when it leaks. Most standard faucets use a mechanism called a compression valve. Inside the handle, there is a stem with a rubber washer at the bottom. When you turn the handle clockwise to shut off the water, the washer presses down against a seat inside the faucet body, creating a seal that stops the flow. Over years of use, that rubber washer gets compressed, warped, cracked, or simply worn down. When that happens, the seal is no longer tight, and a small amount of water pushes past it — creating that annoying drip.
The reason this is reassuring to know is that it means the problem is mechanical and predictable. It is not some mysterious plumbing failure that requires specialized knowledge. You are essentially just replacing a worn-out rubber part. That is something anyone can do.
What You Need Before You Start
Here is what I gathered before starting the repair. You probably have most of these things already:
Tools:
– An adjustable wrench (or a set of wrenches if you know your faucet size)
– A Phillips and flathead screwdriver
– Some white vinegar and an old toothbrush (for cleaning mineral buildup)
– A rag or small towel
– A pair of needle-nose pliers
Parts:
– Replacement rubber washers (they cost about $2 to $5 for a multi-size pack at any hardware store)
– Optional but recommended: replacement O-rings (small rubber rings that seal the stem)
Pro tip: before you go to the store, take a photo of your faucet or look up the brand and model online. If you can find the exact replacement kit for your faucet model, that saves you from guessing which washer size you need. I ended up buying a universal washer kit that had about 10 different sizes for under $5, and one of them was a perfect match.
Step 1: Turn Off the Water Supply
This is the step you absolutely cannot skip. Under your sink, you will find two shut-off valves — one for hot water and one for cold. Turn them both clockwise until they stop. Then turn on the faucet to make sure the water has actually stopped flowing. There might be a small amount of residual water in the line, which is fine, but you want to confirm that the main supply is off.
I made the mistake of only turning off the cold water valve the first time, which meant when I opened up the hot water side, a small amount of water dribbled out. It was not a disaster, but it was messy and completely avoidable. Turn off both valves.
Step 2: Close the Drain and Cover the Area
Place a towel in the sink and close the drain. This is partly to catch any small parts or screws that might fall, and partly to prevent anything from going down the drain. Small washers and screws have a way of disappearing into drains at the worst possible moment. I also laid a towel on the counter around the sink because water will drip from the faucet parts as you remove them.
Step 3: Remove the Handle
This is where the process varies slightly depending on your faucet model. On my faucet, there was a small decorative cap on top of each handle. I pried it off gently with a flathead screwdriver, which revealed a Phillips screw underneath. I unscrewed that and lifted the handle off. Some faucets have a small set screw on the side of the handle instead — look for a tiny hole near the base. You will need an Allen wrench (hex key) for that type.
If your handle is stuck, do not force it. Sometimes mineral buildup from hard water can cause the handle to seize. A gentle wiggle while pulling upward usually does the trick. If it is really stubborn, a bit of white vinegar around the base and letting it sit for 10 minutes can help loosen things up.
Step 4: Unscrew the Stem Assembly
Once the handle is off, you will see a cylindrical piece called the stem or valve stem. Use your adjustable wrench to grip this and turn it counterclockwise to unscrew it from the faucet body. It should come out with moderate effort — not loose enough to fall out on its own, but not requiring all your strength either.
When the stem comes out, take a look at the bottom of it. You will see a small rubber washer screwed onto the end with a tiny screw. That washer is almost certainly the source of your leak. On mine, it had a visible crack running through it and had flattened out to about half its original thickness.
Step 5: Replace the Washer
Unscrew the tiny screw holding the old washer in place and remove it. Take note of the size — match it to one of the washers in your replacement kit. The new washer should be the same diameter and roughly the same thickness as the old one. Screw the new washer onto the stem and tighten the small screw firmly but do not overtighten. You are dealing with a small brass screw going into soft rubber, so it is easy to strip if you are not careful.
While you have the stem out, this is a good time to check the O-ring — that is the slightly larger rubber ring that sits higher up on the stem. If it looks cracked, brittle, or flattened, replace it too. O-rings are cheap and they are another common source of leaks around the handle area.
Step 6: Clean and Reassemble
Before putting everything back together, take your old toothbrush and some white vinegar and scrub the inside of the faucet body where the stem sits. Mineral deposits from hard water build up in there over time, and if you do not clean them out, the new washer will not seal properly against the seat. I was surprised by how much white crusty buildup had accumulated inside mine. A minute of scrubbing with vinegar made a noticeable difference.
Once clean, screw the stem back into the faucet body by turning it clockwise. Tighten it with your wrench — firm but not aggressive. Then put the handle back on, tighten the screw, and snap the decorative cap back into place.
Step 7: Test It
Turn the water supply valves back on by turning them counterclockwise. Then turn on the faucet and let it run for about 30 seconds. Turn it off and watch for drips. In my case, the drip was gone immediately. I left the faucet off and checked back in an hour, then again the next morning. Completely dry.
That was it. The entire process, from shutting off the water to turning it back on, took me about 12 minutes. And the total cost was $4.87 for the washer kit and some vinegar I already had in the kitchen.
What If It Still Leaks?
If you replace the washer and the faucet still drips, the issue might be the valve seat — the metal surface inside the faucet body that the washer presses against. Over time, this seat can become pitted or worn, which means even a brand new washer cannot create a proper seal. You can buy a valve seat wrench for about $10 and either resurface the seat with a seat dresser tool or replace it entirely. That is a slightly more involved process, but still very doable for a beginner.
Alternatively, if your faucet is old and the internal components are heavily corroded, it might be more practical to replace the entire faucet. A decent kitchen faucet costs between $40 and $80, and the installation process is essentially the same in reverse — disconnect the supply lines, remove the mounting nuts under the sink, pull the old faucet out, and drop the new one in. I have not done this myself yet, but from what I have read, it is a manageable weekend project.
Final Thoughts
Looking back, I am glad I decided to try fixing the leak myself rather than calling a plumber. Not because of the money — although saving $150 to $300 is nice — but because it removed a source of anxiety I had about doing basic home repairs. I had always told myself that plumbing was something I should leave to professionals, and that belief kept me from even attempting simple fixes. The reality is that a lot of common household repairs are straightforward, well-documented, and require tools that most people already own.
If you have a leaky faucet right now, I would encourage you to at least try the washer replacement. The worst that happens is you take it apart, realize the problem is more complex than you thought, and put it back together before calling a plumber. You will have lost maybe 20 minutes and gained some understanding of how your faucet works. That is a worthwhile trade either way.