Sink Won't Stop Dripping? Here's Why and How to Fix It

A dripping sink isn’t just annoying, it’s also a pretty big waste of water. Hello, high water bills! If you find your sink won’t stop dripping, you probably want to get to the bottom of it ASAP. In this quick guide, we'll break down the 7 common causes of a dripping sink and walk you through how to fix it.

7 Common Causes of a Dripping Sink

1. Worn-out or Faulty Faucet Washer

One of the most common culprits behind a dripping sink is a worn-out or damaged faucet washer. Over time, the constant friction and water flow can cause deterioration, leading to leaks.

2. Loose O-Rings

O-rings act as seals inside the faucet and handles, preventing water from escaping. When O-rings become loose or deteriorate over time, water can seep through, causing a consistent drip.

3. Corroded Valve Seat

The valve seat is the connection between the faucet and the spout. If the valve seat becomes corroded due to mineral deposits, it can cause leaks. Regular maintenance is key to replacing them before this happens!

4. High Water Pressure

Excessively high water pressure can strain the internal pieces of your faucet, leading to leaks. A pressure regulator or slightly lowering the pressure could be an easy fix to a dripping sink.

5. Worn-Out Cartridge

In cartridge faucets, a worn-out or damaged cartridge can lead to constant dripping. Simply replacing the cartridge is often enough to stop the drip.

6. Faulty Valve Stem

The valve stem controls water flow within the faucet—if it becomes damaged or worn, it can result in an ongoing drip. By just replacing the valve stem, your sink will be as good as new!

7. Improper Installation

A faucet that wasn’t installed properly or pieces that weren’t tightened properly could be the reason for a dripping sink. A quick double-check of installation and tightening all the components could be all it takes to stop the drip!

How to Fix a Dripping Sink: Step-by-Step Guide

1. Gather Necessary Tools

Before starting, grab basic tools like an adjustable wrench, screwdrivers, and plumber's tape. If you suspect specific parts need replacement, be sure to grab them beforehand.

2. Turn Off Water Supply

Find the shut-off valves under the sink and turn them clockwise to stop the water supply. If there aren’t individual shut-off valves, opt to turn off the main water supply.

3. Remove the Faucet Handle

Use a screwdriver to remove the faucet handle; this will give you access to the internal pieces that may be causing the drip.

4. Inspect and Replace the Washer or O-Ring

Examine the washer and O-ring for signs of wear or damage. If you see that they’re worn down, go ahead and replace them with new parts. Make sure you have a proper fit and tighten accordingly, or else you might create another cause for a dripping sink!

5. Check the Valve Seat

Use a wrench to remove the valve seat and inspect it for corrosion or mineral buildup. If needed, clean or replace the valve seat.

6. Examine the Cartridge or Valve Stem

For cartridge or compression faucets, inspect the cartridge or valve stem for damage. If you do see signs of damage, replace the cartridge or valve stem.

7. Reassemble the Faucet

Carefully put the faucet back together, making sure everything is correctly aligned and tightened. Don’t miss this step: it’s crucial to prevent future leaks!

8. Turn On Water Supply and Test

Gradually turn on the water supply and test the faucet for dripping. If you find the dripping isn’t fixed, re-check all of the faucet components, and consider calling a pro for help.

Conclusion: Getting Back Your Drip-Free Sink

Dealing with a dripping sink is definitely frustrating, but with this foolproof guide of causes and fixes, you’ll get your drip-free sink back in no time! Regular maintenance, timely repairs, and proper installation are essential elements in making sure your sink stays leak-free.
If parts of this guide are hard to follow, or if the drip continues, don't hesitate to get help from a pro plumber. Addressing the issue right away not only saves water (and money!) but also helps you avoid potential damage to your plumbing.

FAQs About Dripping Sinks

Q: Why is my sink dripping, and is it a common issue?

A: A dripping sink is often caused by worn-out components like faucet washers, O-rings, or valve seats. It's a common issue from regular wear and tear or improper installation.

Q: Can I ignore a minor drip in my sink, or does it require immediate attention?

A: While a minor drip might seem insignificant, it can waste a significant amount of water over time and may lead to more extensive damage. Plus more water costs you more money! It's recommended to address the issue right away to save water and prevent repairs.

Q: Can I fix a dripping sink myself, or should I hire a professional plumber?

A: Many dripping sink issues can be fixed by homeowners with basic tools. DIY solutions include replacing worn-out washers, O-rings, or valve seats, like in the guide above. But, if the problem continues or is challenging to isolate, consulting a professional plumber is recommended.

Q: How do I determine the specific cause of the drip in my sink?

A: To identify the cause, start by turning off the water supply, disassembling the faucet, and inspecting components like washers, O-rings, valve seats, and the cartridge or valve stem. Look for signs of wear, corrosion, or damage! 

Q: Will tightening the faucet handle stop the drip in my sink?

A: Tightening the faucet handle may temporarily stop a minor drip, but if the issue persists, it's likely due to worn internal components. Tightening the handle alone may not provide a lasting solution.

Q: Is a dripping sink more common in older homes?

A: While age can contribute to wear and tear, dripping sinks can occur even in newer homes. Proper maintenance and inspections are essential for preventing leaks, regardless of the age of sinks and faucets.

Q: How can I avoid sink drips in the future?

A: Regular maintenance, like checking for and replacing worn components, is one proactive way to avoid sink dripping. Not to mention, addressing leaks right away and ensuring proper installation can help avoid sink drips in the future.

💡 Pro Tip

High water pressure can actually cause your sink to drip! High water pressure can strain faucet components, leading to consistent dripping. Opt to install a pressure regulator or adjust the pressure at the source to reduce stress on the faucet.

Q: If I need help with a dripping sink, how can I get in touch with Austin Plumbery?

It’s easy! Just give us a call or text us at (512) 766-1519 to get a quote and schedule a home visit.