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Mar 10, 2025
By GLADYS lIM

What Is the Most Common Cause of Dripping Faucets?

A dripping faucet is one of the most common household plumbing issues, and while it may seem like a minor inconvenience, it can lead to significant water waste and higher utility bills. A single dripping faucet can waste hundreds of gallons of water each year if left unrepaired. Fortunately, identifying the cause of the leak can help you determine whether a simple fix is possible or if you need professional plumbing services near me to handle the repair.

Common Causes of a Dripping Faucet

There are several potential reasons why your faucet may be dripping, but the most frequent culprit is a worn-out or damaged washer. However, other issues such as water pressure problems, faulty O-rings, or corroded valve seats can also contribute to leaks. Below, we’ll explore the most common causes in detail and how to address them.

1. Worn-Out Washer

The washer inside your faucet is responsible for creating a tight seal when the faucet is turned off. Over time, constant friction between the washer and the valve seat causes the washer to wear out, leading to leaks.

Signs of a worn-out washer:

  • The faucet drips continuously, even when fully turned off.
  • The dripping worsens when you apply pressure to the handle.

How to fix it:

  • Turn off the water supply.
  • Disassemble the faucet handle using a wrench.
  • Remove the old washer and replace it with a new one of the same size.
  • Reassemble the faucet and turn the water back on to check for leaks.

If you’re not comfortable making the repair yourself, contacting an emergency plumber in Carlsbad can ensure the issue is resolved correctly.

2. Faulty O-Ring

The O-ring is a small rubber ring that helps seal different faucet components. In cartridge and compression faucets, a worn-out or loose O-ring can cause water to drip from the handle.

Signs of a faulty O-ring:

  • Water leaks around the base of the faucet handle.
  • The handle feels loose or unstable.

How to fix it:

  • Turn off the water supply.
  • Remove the faucet handle to access the O-ring.
  • Replace the damaged O-ring with a new one.
  • Reassemble the faucet and check for leaks.

If replacing the O-ring doesn’t solve the issue, professional plumbing services near me can help diagnose and repair the leak efficiently.

3. Corroded Valve Seat

The valve seat connects the faucet to the water supply and helps regulate water flow. Over time, mineral deposits and corrosion can build up, preventing the faucet from sealing properly and causing leaks.

Signs of a corroded valve seat:

  • Water drips from the spout, even with a new washer or O-ring.
  • The faucet handle feels stiff or difficult to turn.

How to fix it:

  • Clean the valve seat with a mixture of vinegar and water to remove mineral buildup.
  • If corrosion is severe, the valve seat may need to be replaced by a professional emergency plumber in Carlsbad to prevent further damage.

4. High Water Pressure

Excessively high water pressure can cause faucets to leak, especially at night when water demand is lower, and pressure increases. This extra force can cause water to seep through the faucet even when it’s turned off.

Signs of high water pressure:

  • The faucet drips intermittently, rather than continuously.
  • Other fixtures in the house, such as toilets or showerheads, also experience minor leaks.

How to fix it:

  • Check your home’s water pressure using a pressure gauge.
  • If pressure exceeds 60 psi, consider installing a pressure regulator to stabilize it.
  • If unsure, consult professional plumbing services near me to inspect your plumbing system and adjust the pressure accordingly.

5. Loose or Worn-Out Faucet Components

Over time, regular use can loosen screws, nuts, and seals inside the faucet, leading to leaks. Even minor misalignments can prevent the faucet from shutting off completely.

Signs of loose components:

  • The faucet wobbles or moves slightly when used.
  • Tightening the handle temporarily reduces the leak.

How to fix it:

  • Disassemble the faucet and inspect all internal components for wear or looseness.
  • Tighten any loose screws and replace worn-out parts.
  • Reassemble and test the faucet.

If the issue persists, hiring an emergency plumber in Carlsbad ensures the leak is properly diagnosed and repaired.

Why Fixing a Dripping Faucet Is Important

Ignoring a dripping faucet can lead to several problems beyond wasted water. Here’s why prompt repairs are essential:

  • Water conservation: Even a slow drip can waste gallons of water daily, increasing your utility bill.
  • Prevention of further damage: Small leaks can escalate into larger plumbing issues, such as pipe corrosion or water damage.
  • Cost savings: Fixing minor leaks early prevents expensive repairs in the future.

When to Call a Professional

While some dripping faucets can be fixed with basic DIY skills, others require expert intervention. If you’re dealing with a persistent leak, corroded components, or high water pressure issues, seeking plumbing services near me is the best solution. A licensed emergency plumber in Carlsbad can quickly identify the problem and provide a lasting repair, saving you time and frustration.

Conclusion

The most common cause of a dripping faucet is a worn-out washer, but other factors such as a faulty O-ring, corroded valve seat, high water pressure, or loose components can also contribute. Addressing leaks promptly prevents water waste, reduces your utility bill, and protects your plumbing system from further damage. While simple fixes like replacing a washer can be handled DIY-style, more complex issues may require professional plumbing services near me. If you need immediate assistance, an emergency plumber in Carlsbad can provide fast and reliable repairs to restore your faucet to proper working condition.