How to Fix Bathroom Sink Faucet Leak

A dripping bathroom sink faucet can be more than just annoying it wastes water, increases your bills and over time, can damage your sink or cabinets. The good news? Many faucet leaks are easy to fix with a few basic tools and some patience. In this guide, we’ll show you how to fix a bathroom sink faucet leak, why it happens and when to call an emergency plumber.

Why Your Bathroom Sink Faucet Is Leaking

Before tackling a leak, it helps to know the cause. The most common reasons include:

  • Worn Out Washer: Found in older compression faucets. Rubber washers wear down over time, causing drips.

  • Damaged Cartridge: Modern faucets often use cartridges that can crack or wear out.

  • Loose or Corroded Parts: Screws, nuts, or fittings can loosen or corrode over time.

  • High Water Pressure: Excessive water pressure can stress faucet components and trigger leaks.

Identifying the problem ensures you replace the correct part and fix the leak permanently.

Tools You’ll Need to Fix a Faucet Leak

  • Adjustable wrench
  • Screwdriver
  • Replacement washers or cartridge
  • Plumber’s tape
  • Cloth or rag

Having these tools ready will make your repair faster and easier.

Step-by-Step:

How to Fix Bathroom Sink Faucet Leak

1. Turn Off the Water Supply

Start by turning off the water valves under the sink. If you can’t locate them, shut off your main water supply. Open the faucet to drain any remaining water.

2. Remove the Faucet Handle

Use a screwdriver to remove the handle. Some faucets have a small cap covering the screw gently pry it off to access the screw.

3. Inspect the Faucet Parts

Check the washer, cartridge, and O-rings. Look for wear, cracks, or mineral buildup. This will tell you which part needs replacing.

4. Replace the Faulty Component

  • Washer: Take it to a hardware store to match exactly. Insert the new washer snugly.

  • Cartridge: Replace with a new cartridge, making sure it fits properly.

  • O-Rings: Replace any worn O-rings to stop leaks.

5. Reassemble and Test

Put everything back together, turn the water supply on, and test your faucet. If it still drips, check that all components are tight and correctly installed.

When to Call an Emergency Plumber

If your faucet continues to leak after a DIY fix, it could be a sign of a bigger issue, such as:

  • Corroded or damaged plumbing beneath the sink

  • Faulty faucet installation

  • Hidden leaks causing water damage

Calling an emergency plumber ensures the problem is fixed quickly, preventing water damage and saving you time and money.

Tips to Prevent Future Leaks

  • Don’t over-tighten handles

  • Clean aerators and cartridges regularly to prevent mineral buildup

  • Monitor water pressure and consider installing a pressure regulator

Knowing how to fix a bathroom sink faucet leak can save water, money, and frustration. Many leaks are simple to repair with a washer, cartridge, or O-ring replacement. But if the drip persists or you notice water pooling, calling an emergency plumber is the safest option. Quick action protects your home and keeps your bathroom running smoothly.

Can't stop the leak? Call A PLumber

Don’t let a leaking faucet turn into a costly problem! If your bathroom sink faucet continues to drip despite DIY repairs, call our 24/7 emergency plumber now. Fast, reliable and professional service will stop leaks, prevent water damage, and give you peace of mind today.

Call A plumber now!