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What Causes a Dripping Faucet? How to Fix It & When to Call a Pro

July 05, 2025•4 min read

That repetitive drip…drip…drip sound from your faucet isn't just annoying—it can waste hundreds of gallons of water a year and cost you real money. Whether it’s a slow leak or a steady stream, a dripping faucet is usually a sign that something inside needs attention.

In this post, we’ll break down:

  • What causes a dripping faucet

  • Common reasons behind leaks

  • How to fix it yourself

  • When it’s time to call a professional

Let’s dive in.


What Causes a Dripping Faucet?

A faucet may start dripping due to one or more internal components wearing out, becoming loose, or getting clogged. Faucets are made up of several small parts—cartridges, washers, O-rings, and seals—that regulate the flow of water.

Over time, wear and tear, water pressure issues, or sediment buildup can cause these parts to malfunction. The result? Water sneaks past when it shouldn’t, creating that all-too-familiar leak.

Common Reasons for Faucet Leaks

1. Worn-Out Washer

In compression faucets (usually older ones), a rubber washer presses against the valve seat to stop the flow of water. This washer can become stiff, torn, or worn down over time, leading to leaks around the spout.

2. Damaged Cartridge

Cartridge faucets—commonly found in modern homes—use a cartridge to control water flow. If the cartridge is cracked or the seals inside it fail, it may allow water to trickle out even when the faucet is turned off.

3. O-Ring Problems

O-rings are small rubber rings that help seal various parts of your faucet, especially in cartridge-style designs. A worn or loose O-ring near the handle can cause leaks at the base or around the faucet body.

4. Corroded Valve Seat

The valve seat connects the faucet to the spout. If water minerals build up over time, it can corrode the seat, allowing water to seep through. This is a common source of slow, persistent dripping.

5. High Water Pressure

Excessive water pressure can force water through the faucet even when it’s closed. This usually causes nighttime leaks or drips that stop and start irregularly.

How to Fix a Dripping Faucet Yourself

If you’re handy with a screwdriver and can follow instructions, you might be able to stop the leak yourself. Here's how to approach it:

🧰 Tools You’ll Need:

  • Adjustable wrench

  • Screwdrivers (flat-head and Phillips)

  • Replacement parts (washer, cartridge, or O-ring depending on faucet type)

  • Plumber’s grease

  • Rag or towel

  • Bucket or bowl (to catch water)

🔧 Step-by-Step Instructions:

Turn Off the Water Supply
Look under the sink and shut off both hot and cold water valves.

Plug the Drain
Use a sink stopper or towel to prevent small parts from falling into the drain.

Disassemble the Faucet
Remove the handle and take note of how the internal parts are arranged (take a photo if needed). Identify whether it’s a cartridge, ball, disk, or compression faucet.

Inspect and Replace the Faulty Parts
Look for obvious signs of wear: cracked cartridges, flattened washers, broken O-rings. Take the part to a hardware store to get an exact match.

Apply Plumber’s Grease
Lubricate the new parts slightly before reassembling to ensure a smooth fit and prevent leaks.

Reassemble and Test
Put everything back together, turn the water supply on, and test the faucet for drips.

Knowing When It’s Time to Call a Pro

While a dripping faucet might seem like an easy fix, there are times when calling a professional plumber is the smarter (and safer) option. If you're unsure what type of faucet you’re dealing with, or if you've tried replacing parts and the leak continues, it's likely time to bring in an expert.

Visible corrosion, hard water buildup, or a faulty valve seat can indicate bigger plumbing issues that require experience and proper tools. Faucets that are old or rusted may also need complete replacement. And if you’re seeing water leaking under the sink, behind walls, or anywhere it shouldn't be—don't wait.

🛠️ That’s where Orlando Plumbing and Draining comes in. Our licensed professionals can quickly diagnose the issue, stop the leak, and help you avoid costly water damage. Whether you need a faucet repair, full replacement, or a water pressure check, we’ve got you covered—with fast service, fair pricing, and guaranteed results.

Final Thoughts

A dripping faucet might seem like a minor nuisance, but left unchecked, it can lead to bigger problems—like higher utility bills, water damage, and even mold. The good news? Most leaks are easy and inexpensive to fix once you know what to look for.

Whether you handle it yourself or trust the experts at Orlando Plumbing and Draining, taking action now will save you money—and your sanity—down the line.


🔧 Need help right away?
Contact Orlando Plumbing and Draining for same-day service and expert plumbing solutions you can trust.

📞 Call now at (689) 308-1600
🌐 Visit us at
www.orlandoplumbinganddraining.com




Ma Elda Gawat is a seasoned Digital Marketing Specialist with extensive experience in crafting and executing strategic online marketing campaigns. Her expertise spans across various facets of digital marketing including SEO, SEM, content marketing, and social media management.

Ma. Elda Gawat

Ma Elda Gawat is a seasoned Digital Marketing Specialist with extensive experience in crafting and executing strategic online marketing campaigns. Her expertise spans across various facets of digital marketing including SEO, SEM, content marketing, and social media management.

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