A dripping faucet may seem like a minor annoyance, but over time it can waste a surprising amount of water and increase your water bills. The good news is that many common faucet leaks can be repaired with a few basic tools and replacement parts. Knowing how to fix a leaky faucet can save wasted water, prevent additional wear on your plumbing fixtures, and help you avoid more expensive repairs down the road.

Before you begin, remember that every faucet is a little different. Identifying your faucet type is the first step toward choosing the correct repair.

Why Faucets Start Leaking

A faucet rarely begins leaking without a reason. Most leaks develop gradually as internal components wear out from years of daily use.

Some of the most common causes include:

  • Worn rubber washer or seat washer
  • Damaged O-rings or replacement O-rings
  • Mineral buildup caused by hard water
  • Loose internal hardware
  • A worn valve seat
  • A damaged cartridge inside cartridge faucets

The good news is that many of these issues involve inexpensive replacement parts.

Gather Your Tools Before You Begin

Before disassembling the faucet, gather everything you may need. Having your tools ready makes the repair much easier.

Common tools include:

  • Screwdriver
  • Flat head screwdriver
  • Adjustable wrench
  • Pliers
  • Plumber's grease
  • Penetrating oil
  • Replacement washers
  • Replacement o-rings

You may also want a towel or small container nearby to keep screws and parts organized.

Turn Off the Water Supply

Before removing any faucet components, shut off the water supply.

Most sinks have shut-off valves located underneath the sink. Turn both the hot and cold water valves clockwise until they stop. Once the water supply is off, turn on the faucet to relieve any remaining water pressure and confirm that the water flow has stopped completely.

Skipping this step can quickly turn a simple repair into a messy cleanup.

Identify Your Faucet Type

Different faucet designs use different internal components.

Some of the most common styles include:

  • Compression faucets
  • Cartridge faucets
  • Ball faucet models
  • Ceramic disc faucets

Knowing your faucet type helps determine which replacement parts you'll need and how the repair should be completed.

How to Repair a Compression Faucet

Compression faucets are one of the oldest faucet designs and commonly use washers to create a seal.

Begin by removing the decorative cap from the faucet handle. Underneath, remove the handle screw using the appropriate screwdriver. Lift off the faucet handle to expose the packing nut, then loosen it with an adjustable wrench.

After removing the faucet stem, inspect the rubber washer and seat washer. If either shows signs of wear, replace them before reassembling the faucet.

While everything is apart, inspect the valve seat for corrosion or mineral deposits that could prevent a proper seal.

How to Repair Cartridge Faucets

Cartridge faucets operate differently than compression faucets.

After removing the decorative cap and handle screw, carefully lift off the faucet handle. Depending on the model, you may need to remove a retaining clip or retainer nut before pulling out the cartridge.

Inspect the cartridge along with any O-rings for damage. If necessary, install replacement O-rings or replace the cartridge entirely before reassembling the faucet.

Applying a small amount of plumber's grease to new seals can help improve installation and extend their lifespan.

Repairing a Ball Faucet

A ball faucet contains several small moving parts that work together to control water flow.

These faucets often require replacing internal springs, seals, or other components rather than a single washer. Because multiple parts wear together, many homeowners choose to purchase a repair kit designed specifically for their faucet model.

Taking photos during disassembly can make reassembly much easier.

Remove Mineral Buildup

Hard water can leave mineral deposits inside the faucet body and around the faucet spout.

These deposits may prevent seals from closing completely, even after new parts are installed. Cleaning the affected areas before reassembly helps restore smooth operation and improve the effectiveness of the repair.

A soft brush and mild cleaning solution are usually sufficient for most buildup.

What If the Faucet Still Leaks?

Sometimes replacing washers or O-rings does not completely solve the problem.

If the faucet continues leaking after repair, the valve seat may be damaged or internal components may be excessively worn. In some cases, replacing the entire faucet becomes the most practical long-term solution.

If you're uncomfortable diagnosing the issue yourself, professional plumbing services can help identify the underlying problem.

Prevent Future Faucet Leaks

Regular maintenance can help extend the life of your plumbing fixtures.

Simple habits include:

  • Address a dripping faucet as soon as it appears.
  • Avoid overtightening faucet handles.
  • Clean away mineral deposits caused by hard water.
  • Inspect visible plumbing for leaks periodically.
  • Replace worn washers and O-rings before they fail completely.

Small maintenance tasks often prevent larger plumbing repairs later.

When to Call a Professional

Many faucet repairs are well within the capabilities of experienced DIY homeowners. However, not every leak has a simple solution.

If the faucet body is cracked, the plumbing connections are leaking, or the shut-off valves no longer function properly, professional assistance is usually the safest option. Many plumbing services also provide drain cleaning and other preventative maintenance that can improve your home's overall plumbing system.

Key Takeaways

  • A dripping faucet often results from worn washers, O-rings, or cartridges.
  • Always turn off the water supply before beginning repairs.
  • Identify whether you have compression faucets, cartridge faucets, or a ball faucet before disassembly.
  • Replace worn rubber washers, seat washers, or replacement O-rings as needed.
  • Clean mineral deposits caused by hard water before reassembling the faucet.
  • Use plumber's grease on new seals when appropriate.
  • Call a professional if leaks continue after replacing worn parts.

FAQs About How to Fix a Leaky Faucet

What causes a dripping faucet?

A dripping faucet is most commonly caused by worn washers, damaged O-rings, or aging internal components. Hard water can also create mineral deposits that interfere with proper sealing. Identifying the source of the leak is the first step toward an effective repair.

Most sinks have shut-off valves located underneath the fixture. Turn both the hot and cold water valves clockwise until they stop, then open the faucet to release any remaining water pressure. Always confirm the water flow has stopped before removing any parts.

Yes. Many faucet leaks only require replacing inexpensive components like washers, replacement O-rings, or a cartridge. Unless the faucet body itself is damaged, repairing individual parts is often a cost-effective solution.

Compression faucets use washers that compress against a valve seat to stop water flow. Cartridge faucets rely on an internal cartridge that controls both temperature and water flow. Each design requires different repair procedures and replacement parts.

The valve seat may be damaged, mineral deposits may still be preventing a proper seal, or another internal component may have worn out. In some cases, multiple parts fail at the same time. Careful inspection can help determine whether additional repairs are necessary.

Yes, in many cases plumber's grease helps lubricate new seals and replacement O-rings during installation. It also helps reduce wear and makes future disassembly easier. Be sure to use grease specifically designed for plumbing applications.

If you discover damaged shut-off valves, cracks in the faucet body, persistent leaks after replacing parts, or other plumbing issues beyond the faucet itself, professional assistance is recommended. A plumber can also inspect the surrounding plumbing for additional concerns. Early repairs often prevent more extensive water damage later.

Absolutely. Even a slow drip can waste a significant amount of water over time. Repairing leaks promptly helps reduce wasted water while lowering monthly water bills.

Protect Your Home's Plumbing with Dwellness

Learning how to fix a leaky faucet is a valuable skill, but even well-maintained plumbing fixtures eventually experience normal wear and tear. When larger plumbing issues arise, having dependable protection can make unexpected repairs much easier to manage.

Dwellness helps homeowners protect important home systems, including plumbing, from unexpected repair costs. Contact Dwellness today to learn more about our home warranty plans and discover how dependable coverage can help keep your home running smoothly with greater peace of mind.