How to Repair a Leaking Faucet in 30 Minutes for Under $15

A drip that never stops can drive anyone nuts, and the water bill will thank you for fixing it fast. The good news? You don’t need a pricey plumber or a fancy toolbox. With a few common items and a little patience, you can stop that leak in half an hour and spend less than a lunch.

What’s Really Causing the Drip?

Most kitchen and bathroom faucets use a simple cartridge or a set of rubber washers. Over time the rubber wears out, the cartridge gets clogged with mineral build‑up, or the tiny O‑ring (a rubber seal) cracks. When any of those parts fail, water finds a way out and you hear that steady “drip‑drip‑drip.” The fix is usually just a replacement part and a bit of tightening.

Gather Your Tools – All Under $15

If you already have a wrench and screwdriver in your kitchen drawer, you’re probably under $10 total. Most hardware stores sell a “faucet repair kit” for $7‑$9 that includes the most common washers and O‑rings.

Step‑By‑Step Fix (30 Minutes or Less)

1. Shut Off the Water

Locate the shut‑off valves under the sink. Turn them clockwise until they stop. If you can’t find them, turn off the main house valve – it’s usually near the water heater. Open the faucet to let any remaining water drain out. You’ll hear the drip stop, and that’s your cue to start.

2. Plug the Drain

A small bucket or a sink strainer works fine. This prevents any tiny screws or parts from falling down the drain while you work.

3. Remove the Faucet Handle

Most handles are held on by a tiny screw hidden under a decorative cap. Use a flat‑head screwdriver to pop the cap off, then unscrew the handle. If the handle feels stuck, a little penetrating oil on the screw helps. Once the handle is off, you’ll see the stem or cartridge.

4. Take Apart the Stem

For a compression faucet (the kind with separate hot and cold handles), you’ll see a nut just behind the stem. Use the adjustable wrench to loosen it a half turn – you don’t need to remove it completely. For a cartridge faucet, there’s usually a retaining clip or a small screw. Remove that, then pull the cartridge straight out.

5. Inspect the Parts

Look for obvious signs of wear: a flattened washer, a cracked O‑ring, or mineral deposits on the cartridge. If the washer is hard and thin, replace it. If the cartridge looks corroded, swap it for a new one from the kit.

6. Replace the Washer or Cartridge

• Compression faucet: Unscrew the old washer from the stem, slide a new one in, and re‑tighten the nut just enough to stop leaks but not so tight that it damages the stem.
• Cartridge faucet: Insert the new cartridge the same way the old one came out, making sure it sits flush. Snap the retaining clip back in place.

7. Reassemble

Put the handle back on, screw the hidden screw, and snap the decorative cap back. Give everything a gentle wiggle to make sure it feels solid.

8. Turn the Water Back On

Open the shut‑off valves slowly. Watch the faucet for a few seconds. If the drip is gone, you’ve nailed it. If you still see a leak, tighten the nut a little more (for compression) or double‑check that the cartridge is seated correctly.

9. Clean Up

Wipe away any water on the sink, put the tools back in the drawer, and give yourself a pat on the back. You just saved yourself a call to a plumber and kept the water bill in check.

Tips to Keep the Faucet Happy

• Don’t over‑tighten. A wrench turned too far can strip the threads or crack the faucet body. A quarter turn past snug is usually enough.
• Use white vinegar to soak a stubborn cartridge for 10 minutes before removal. The acid helps dissolve mineral build‑up.
• Check the aerator. That little screen at the tip of the faucet can get clogged and cause uneven flow. Unscrew it, rinse it, and reinstall.

When to Call a Pro

If the faucet still leaks after you’ve replaced the washers and cartridge, the problem may be deeper – like a corroded valve seat inside the faucet body. That’s a job for a plumber, and it’s better to catch it early than keep fighting a stubborn leak.

Bottom Line

Fixing a leaking faucet isn’t rocket science. With a few cheap parts, a couple of basic tools, and about half an hour of your time, you can stop that annoying drip and keep more money in your pocket. The next time you hear that steady tap, remember the steps above and give your faucet a quick fix before it turns into a flood.