How To Repair Leaking Delta Kitchen Faucet

How To Repair Leaking Delta Kitchen Faucet

A leaking kitchen faucet can be a frustrating and wasteful problem to deal with. Not only does it waste water, but it can also lead to damage to your sink and countertops. One common brand of kitchen faucets is Delta, known for their durability and reliability. In this article, we will guide you through the process of repairing a leaking Delta kitchen faucet, providing you with valuable insights and step-by-step instructions.

Identifying the Source of the Leak

The first step in repairing a leaking Delta kitchen faucet is to identify the source of the leak. Leaks can occur in various parts of the faucet, including the handle, spout, or base. Here are some common causes of leaks in Delta kitchen faucets:

  • Worn-out O-rings: O-rings are rubber seals that prevent water from leaking out of the faucet. Over time, they can become worn or damaged, leading to leaks.
  • Loose connections: If the connections between the various parts of the faucet are loose, water can seep through and cause leaks.
  • Corroded valve seats: Valve seats are metal components that connect the faucet to the spout. If they become corroded, they can cause leaks.
  • Cracked or damaged cartridges: Cartridges control the flow of water in the faucet. If they are cracked or damaged, they can lead to leaks.

Gathering the Necessary Tools

Before you begin the repair process, it is important to gather the necessary tools. Here are some tools you may need:

  • Adjustable wrench
  • Phillips screwdriver
  • Allen wrench
  • Plumber’s tape
  • Replacement parts (O-rings, cartridges, etc.)

Step-by-Step Repair Process

1. Turn off the Water Supply

Before you start repairing the faucet, make sure to turn off the water supply. Look for the shut-off valves under the sink and turn them clockwise to shut off the water.

2. Disassemble the Faucet

Use an Allen wrench or a Phillips screwdriver to remove the handle of the faucet. Once the handle is removed, you will have access to the cartridge or valve assembly.

3. Replace the O-rings

If the leak is coming from the handle, it is likely due to worn-out O-rings. Carefully remove the old O-rings and replace them with new ones. Apply plumber’s tape to the threads of the valve assembly before reassembling the faucet.

4. Replace the Cartridge

If the leak is coming from the spout, you may need to replace the cartridge. Remove the old cartridge by unscrewing it with an adjustable wrench. Install the new cartridge and tighten it securely.

5. Check for Loose Connections

Inspect the connections between the various parts of the faucet to ensure they are tight. Use an adjustable wrench to tighten any loose connections.

6. Test the Faucet

Once you have reassembled the faucet, turn on the water supply and test the faucet for any leaks. If there are still leaks, you may need to repeat the steps or consider calling a professional plumber.

Frequently Asked Questions

1. How do I know if my Delta kitchen faucet needs repair?

If you notice water dripping from the faucet when it is turned off or if the water flow is inconsistent, it is likely that your Delta kitchen faucet needs repair.

2. Can I repair the faucet myself, or should I call a professional?

Minor leaks and repairs can often be fixed by homeowners themselves. However, if you are unsure or if the problem persists after attempting repairs, it is best to call a professional plumber.

3. How often should I replace the O-rings in my Delta kitchen faucet?

The frequency of O-ring replacement depends on the usage and water quality. As a general guideline, it is recommended to replace the O-rings every 1-2 years to prevent leaks.

4. Where can I find replacement parts for my Delta kitchen faucet?

You can find replacement parts for your Delta kitchen faucet at hardware stores, home improvement centers, or online retailers. Make sure to purchase genuine Delta parts for the best quality and compatibility.

5. Are Delta kitchen faucets covered by warranty?

Delta offers a limited lifetime warranty on their faucets, which covers defects in materials and workmanship. However, the warranty does not cover normal wear and tear or damage caused by improper installation or use.

6. How can I prevent future leaks in my Delta kitchen faucet?

To prevent future leaks, it is important to perform regular maintenance on your Delta kitchen faucet. This includes cleaning the aerator, checking for loose connections, and replacing worn-out parts as needed.


Repairing a leaking Delta kitchen faucet is a manageable task that can save you money and prevent further damage. By identifying the source of the leak and following the step-by-step repair process, you can successfully fix the issue. Remember to gather the necessary tools, such as an adjustable wrench and replacement parts, and test the faucet after reassembly. If you are unsure or the problem persists, it is always best to consult a professional plumber. Regular maintenance and proper care can help prevent future leaks and ensure the longevity of your Delta kitchen faucet.